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  • Inorganic Chemistry  (706)
  • Organic Chemistry  (695)
  • 2015-2019
  • 1980-1984  (1,401)
  • 1982  (1,401)
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  • 2015-2019
  • 1980-1984  (1,401)
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  • 1
    Electronic Resource
    Electronic Resource
    Phosphororganische Antioxidantien. I. Kinetik und Mechanismus der Zersetzung von Alkyl-hydroperoxiden durch o-Phenylen-phosphite und -phosphate (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 697-705 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organophosphorus Antioxidants. I. Kinetics and Mechanism of the Decomposition of Alkylhydroperoxides by o-Phenylene Phosphites and PhosphatesThe reaction mechanism of 2-(2, 6-di-tert-butyl-4-methyl-phenoxyl)-1,3,2-benzodioxaphosphole (1) with cumyl and t-butyl hydroperoxide has been studied kinetically by means of 31P-n.m.r. spectroscopy and high pressure liquid chromatography. 1 reacts with cumyl hydroperoxide to give the corresponding 2-oxide (2) which with more hydroperoxide and/or water forms the open chained phosphate ester 5. This acidic phosphate decomposes hydroperoxide catalytically. The kinetic parameters of the separate reaction steps are given. The ionic mechanism of hydroperoxide decomposition is accompanied by a homolytic one in a minor proportion.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240502
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  • 2
    Electronic Resource
    Electronic Resource
    Phosphororganische Antioxidantien. II. Kinetik und Mechanismus der Zersetzung von Alkylhydroperoxiden durch Esteramide der phosphorigen- und Phosphorsäure (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 706-716 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organophosphorus Antioxidants. II. Kinetics and Mechanism of the Decomposition of Alkylhydroperoxides by Esteramides of Phosphorous and Phosphoric AcidThe reaction mechanism of 2-amido-1,3,2-benzodioxaphospholes (1) with cumyl and t-butylhydroperoxide has been studied kinetically by means of 31P-n.m.r. and e.p.r. spectroscopy and high pressure liquid chromatography. 1 reacts with cumyl hydroperoxide to give the corresponding 2-oxides (2) which with more hydroperoxide and/or water form the phosphate esters 7 and 8. These acidic phosphates decompose cumyl hydroperoxide catalytically giving phenol and acetone.All amides (1) react with t-butyl hydroperoxide stoichiometrically to give t-butanol.The ionic mechanism of hydroperoxide decomposition is accompanied in a minor proportion by a homolytical one.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240503
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  • 3
    Electronic Resource
    Electronic Resource
    The Complexes of Dipicolinic Acid and Related Compounds in oxidation of organic substrates (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 735-742 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Komplexe der Dipicolinsäure und verwandter Verbindungen zur Oxidation organischer SubstrateDie Oxidation von methylierten Hydrochinonen zu Chinonen und von α,β-ungesättigten Alkoholen zu Aldehyden in Gegenwart verschiedener Oxidationsmittel wurde untersucht.Günstige Ergebnisse wurden bei der Anwendung des MnO2-Dipikolinsäure-Systems für d'e Oxidation von Allyl- und Benzylalkoholen und des AgO-Dipikolinsäure-Systems für die oxidative Demethylierung von methylierten Hydrochinonen erreicht.Der Einfluß der Struktur von 4-substituierten Dipicolinsäuren auf die katalytischen Eigenschaften wurde untersucht.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240506
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  • 4
    Electronic Resource
    Electronic Resource
    Solvolysis of cis- and trans-2-Phenylcyclohexyl-p-bromobenzene Sulphonate (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 725-734 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Solvolyse von cis- und trans-2-Phenylcyclohexyl-p-brombenzen-sulfonatenDie Solvolyse von cis- and trans-2-Phenyl-cyclohexyl-p-brombenzensulfonaten wurde in Essigsäure, wäßrigem Dioxan und wäßrigem Ethanol untersucht und mit der des Cyclohexylsulfonatesters verglichen. In Essigsäure liegt die Geschwindigkeit des cis-Isomeren gegenüber dem trans-Isomeren um den Faktor 5 höher, in wäßrigem Dioxan und wäßrigem Alkohol dagegen um den Faktor 10 bzw. 12.Produkte der Acetolyse sind hauptsächlich Eliminierungsprodukte (1- und 3-Phenylcyclohexen 75%) und cis- und trans-Acetate (25%). In wäßrigen Lösungsmitteln entstehen vorwiegend Eliminierungsprodukte (98%).Die Erhöhung der Geschwindigkeit des cis-Isomeren gegenüber der trans-Verbindung ist auf eine sterische Beschleunigung zurückzuführen.Ein solvatisiertes Ionenpaar wurde als Zwischenprodukt postuliert; für eine Phenylnachbargruppenwirkung ergab sich kein Hinweis.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240505
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen zum UV/Vis-Spektralverhalten von Azofarbstoffen. VI. Zum Einfluß von Substituenten auf die Farbe von Derivaten des 1-Phenylazo-2-naphthols (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 743-752 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Studies on UV/Vis Absorption Spectra of Azo Dyes. VI. The Effect of Substituents on the Color of Derivatives of 1-Phenylazo-2-naphtholsThe absorption spectrum of 1-(4′-diethylaminophenylazo)-2-naphthol has been examined, and it has been found that the absorption band at 510 nm corresponds to the azo form and the shoulder at 610 nm corresponds to the hydrazone tautomeric form. Substituents in 3-position of 2-naphthol which have a free proton (e.g. OH, COOH, CONHR) stabilize the hydrazone tautomeric form by an intramolecular hydrogen bonding between substituent and hydrazone oxygen. Substituents which have not a free proton (e.g. OCH3, COOCH3, CONR1R2) have little influence on the absorption spectrum.The relative intensities of the two bands of the tautomeric forms are dependent on:  -  the electron attracting or electron releasing effect of the substituent R in CONHR -  the hydrogen bonding acidity of the substituents in 2′-position if R in CONHR is a phenylring -  the hydrogen bonding acidity of the solvent.The effect of substituents in the phenylazo subsystem is also discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240507
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  • 6
    Electronic Resource
    Electronic Resource
    Bestimmung der Nullfeldparameter optisch angeregter 3(π,π*)-Zustände ausgewählter aromatischer Systeme (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 761-768 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Determination of the Zero Field Parameters Optically Excited 3(π,π*)-States in Selected Aromatic SystemsExperimental zero field parameters of optically excited naphthalene and quinoxaline derivatives are presented. The (D*), (D) and (E) parameters are determined by the position of the transitions by means of simple approximation formula, magnetophotoselection and simulation of spectra. Possibilities of comparison of the zero field parameters of optically excited 3(π,π*)-states with parameters of ground state for simple aromatic hydrocarbones are presented.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240509
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  • 7
    Electronic Resource
    Electronic Resource
    Photochemie substituierter Cycloheptatriene. XVXIV. Mitt.: W. ABRAHAM, K. BUCK u. D. KREYSIG, Z. Chem. 21, 290 (1981).. Zur Charakterisierung der Elektronischen Übergänge in 1-Aryl-4-(p-dimethylaminophenyl)-cycloheptatrienen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 753-760 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Photochemistry of Substituted Cycloheptatrienes. XV. About the Characterization of the Electronic Transitions in 1-Aryl-4-(p-dimethylaminophenyl)-cycloheptatrienesThe absorption spectra of the title compounds are discussed in dependence on polarity of the solvent and its ability to form hydrogen bonds. The results suggest a hybridization of the N-atom of the dimethylamino group between sp3 and sp2 in the ground state. Contrary to this, the nitrogen has sp2-hybridization in the short wavelength (SE) fluorescing state. In a second fluorescence state the geometry of the seven-membered ring should change. Therefore the viscosity of the solvents influences both the position and the quantum yield of this long wavelength emission (LE). The influence of polarity and viscosity of the solvents is described by multiple regression. The temperature dependence of fluorescence quantum yields is discussed, as well.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240508
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  • 8
    Electronic Resource
    Electronic Resource
    Free radicals of phenothiazine and related compounds. IV. Phenothiazinyl- and Diphenothiazine- Copper Complexes as intermediates and products in the interaction of phenothiazines with copper(II) halides (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 769-776 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Freie Radikale des Phenothiazins und ähnliche Verbindungen. IV. Phenothiazinyl- und Diphenothiazin-Kupferkomplexe als Zwischen- und Endprodukte in der Reaktion von Phenothiazin mit Kupfer (II)-halogenidenDarstellung und Eigenschaften einiger Komplexverbindungen des 10-Phenothiazinylradikals und deren Dimerisierungsprodukte mit Cu(I)- und Cu(II)-ionen werden beschrieben.Ein Mechanismus für die selektive Chlorierung von Phenothiazinen in Position 1 mittels CuCl2 wird diskutiert. Die Möglichkeit ähnlicher Bromierungen mittels CuBr2 wird demonstriert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240510
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  • 9
    Electronic Resource
    Electronic Resource
    1,2,3-Triazabutadiene. XVXIV. Mitt.: E. FANGHÄNEL u. J. HOHLFELD, J. prakt. Chem. 323, 253 (1981).. Einfluß der Substituenten auf die 15N- und 13C-chemischen Verschiebungen in Triazabutadienen und Azobenzenen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 777-786 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,2,3-Triazabutadienes. XV. Substituent Effects on the Nitrogen-15 and the Carbon-13 Chemical Shifts of Triazabutadienes and AzobenzenesNitrogen-15 and carbon-13 chemical shifts are reported for 15N-enriched p-substituted triazenes 1, triazenium salts 2 and azobenzenes 3. Linear correlations between substituent induced shifts for various 15N- and 13C-atoms and σ-Hammett constants was found and discussed. The sensitivity of the chemical shifts of both nuclei to substituent effects in analogously constituted compounds are compared.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240511
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  • 10
    Electronic Resource
    Electronic Resource
    Elektrochemische Darstellung von organischen Diseleniden (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 787-792 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electrochemical Preparation of Organic DiselenidesBy the method of electrosynthesis a number of organic diselenides can be prepared simply and without danger. The cathodic polarisation of a special selenium electrode in aprotic solutions gives rise to polyselenideanions, which react with electrophilic compounds to the corresponding diselenides of the general formula RSeSeR (2a-e) with R = benzyl, 2-nitrophenyl, cyclohexyl, isopropyl, 4-cyanophenyl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240512
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  • 11
    Electronic Resource
    Electronic Resource
    Chemische Synthese einiger im Zuckerteil abgewandelter kürzerer Oligodesoxyribonucleotide (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 793-802 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Chemical Synthesis of Some Shorter Oligodeoxyribonucleotides with Modified Sugar MoietyThe chemical synthesis of the dinucleotides 5′-deoxy-5′-fluoro-thymidyl-(3′ → 5′)-3′-deoxy-3′-fluoro-thymidine, 5′-deoxy-5′-fluoro-thymidyl-(3′ → 5′)-3′-deoxy-3′-azido-thymidine, 2′-deoxy-cytidyl-(3′ → 5′)-3′-deoxy-3′-fluoro-thymidine and the tetranucleotide 2′-deoxy-2′-fluorouridyl-(3′ → 5′)-thymidyl-(3′ → 5′)-thymidyl-(3′ → 5′)-thymidyl-(3′ → 5′)-3′-deoxy-3′-fluoro-thymidine d(2′-F-UpTpTp-3′-F-T) is described both in solution and in the solid phase.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240513
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  • 12
    Electronic Resource
    Electronic Resource
    Acylierung von Heterocyclen mit Kohlensäurederivaten. II. Endo- und exo-Carbamoylierung von 2-Amino-benzimidazol-Derivaten mit Isocyanaten. Mechanismus der Acylgruppenwanderung (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 809-815 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Acylation of Heterocycles with Carbonic Acid Derivatives. II. Endo and Exo Carbamoylation of 2-Amino-benzimidazole Derivatives with Isocyanates. Mechanism of the Acyl Group Migration2-Amino-benzimidazoles react with isocyanates with good yields to give 2-amino-1-carbamoyl-aminobenzimidazoles 1 at -30°C and the corresponding 2-carbamoyl isomeres 2 at room temperature, respectively. The isomerization mechanism was studied by crossover experiments and kinetic measurements and has been found to consist of inter- and monomolecular acyl transfer.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240515
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  • 13
    Electronic Resource
    Electronic Resource
    Acylierung von Heterocyclen mit Kohlensäurederivaten. I. Kinetik und Mechanismus der Reaktion von 2-Aminobenzimidazolen mit Arylcyanaten (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 803-808 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Acylation of Heterocycles with Carbonic Acid Derivatives. I. Kinetics and Mechanism of the Reaction of 2-Aminobenzimidazoles with Aryl CyanatesThe second order rate constants for the reaction of 2-amino-benzimidazoles (2-ABI) with aryl cyanates forming 2-amino-benzimidazole aryl ester imide 3 have been determined in dependence on substituent effects by u. v. measurements. The results are interpreted by a six-membered cyclic transition state in which the electrophilic attack of the cyanate on the endocyclic N atom is catalyzed by an H bridge interaction of the exocyclic amino group of 2-ABI with the OCN group.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240514
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  • 14
    Electronic Resource
    Electronic Resource
    The aminolysis of carbamates. I. The Kinetics of the Aminolysis of Benzyl N-phenylcarbamate with Ethanolamine (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 816-826 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aminolyse von Urethanen. I. Kinetik der Aminolyse des Benzyl-N-phenylurethans mit MonoethanolaminDie Kinetik der Aminolyse des Benzyl-N-phenylurethans im Bereich von 135 bis 165°C in Gegenwart eines Überschusses an Monoethanolamin mit und ohne Lösungsmittel (Benzylalkohol) konnte als Folgereaktion erster Ordnung erfaßt werden: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} \rm{PhNH} \hbox{---} \rm{COO} \hbox{---} \rm{CH}_2 \rm{Ph} \to [+ \rm{EA}]\rm{k}_1\rm{PhNH} \hbox{---} \rm{CO} \hbox{---} \rm{NH} \hbox{---} \rm{CH}_2 \rm{CH}_2 \rm{OH}\\ \to[+ \rm{EA}]\rm{k}_2\rm{PhNH}_2 + (\rm{HOCH}_2 \rm{CH}_2 \hbox{---} \rm{NH})_2 \rm{C} = \rm{O} \end{array} $$\end{document}.Die Abhängigkeit der Geschwindigkeitskonstante k1 von der Monoethanolaminkonzentration weist auf eine Reaktion 2. Ordnung hin, und es wurde eine lineare Abhängigkeit der relativen Reaktivität R = k1/k2 von der Konzentration festgestellt. Der Einfluß der Temperatur auf R und die Aktivierungsenergien der beiden Reaktionsschritte wurden ermittelt.Die Analyse der Reaktanten und Zwischenprodukte erfolgte mit Hilfe der Hochdruckflüssigkeitschromatographie.Mögliche Mechanismen werden besprochen.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240516
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  • 15
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    Electronic Resource
    Semiempirical and ab initio Calculations on the Tautomerism of Pyrazolin-5-ones in the Gas Phase and in Solution (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 827-831 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Semiempirische und ab initio Berechnungen zur Tautomerie von Pyrazolin-5-onen in der Gasphase und in LösungEs werden die Ergebnisse einer durchgehend theoretischen Behandlung der Tautomeriegleichgewichte von Pyrazolin-5-onen vorgestellt. Der Formalismus beinhaltet die Berechnung der potentiellen Energie mit Hilfe des MNDO-, STO-3G- und 4-31 G-Verfahrens, die statistisch-thermodynamische Behandlung der Gleichgewichte unter Zugrundelegung des MNDO-Kraftfeldes und die Abschätzung des Lösungsmitteleinflusses mit Hilfe verschiedener klassischer und quantenchemischer Reaktionsfeldmodelle.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240517
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  • 16
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    Zur Temperatur- und Viskositätsabhängigkeit der Fluoreszenzquantenausbeuten von donator-substituierten 4′-Diphenylphosphinyl-trans-stilbenen in wenig viskosen Lösungsmitteln unterschiedlicher Polarität (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 887-895 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Dependence of Fluorescence Quantum Yields of Donor Substituted 4′-Diphenylphosphinyl trans-Stilbenes on Temperature and Viscosity in Low Viscous Solvents of Different PolarityThe dependence of fluorescence quantum yields of donor substituted 4′-diphenylphosphinyl trans-stilbenes 1 on temperature was investigated between 15-65°C in toluene and n-propanol. It is concluded that the fluorescence quantum yield dependence on temperature is due to the dependence of nonradiative deactivation on solvent viscosity. The nonradiative deactivation is attributed to the ethylene bond rotation in 1. The rotation around the ethylenic bond and the fluorescence are the two most important deactivation processes detected up to now for the first excited singlet of 1 in liquid solution.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240604
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  • 17
    Electronic Resource
    Electronic Resource
    Hydroxybromierung von Norcaran (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 896-902 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydroxybromination of NorcaraneTreatment of norcarane (1) with N-bromosuccinimide (NBS) and water results mainly in Markovnikov addition of the elements of hypobromous acid to the cyclopropane ring forming trans-2-(bromomethyl)cyclohexanol (2) (52%) and cis-2-(bromomethyl)cyclohexanol (3) (7%). In addition a deprotonation of the intermediately cationic species leads to the not isolated 3-(bromomethyl)cyclohexene (12), which gives with a second mol of NBS and water t-2-bromo-t-3-(bromomethyl)cyclohexan-r-1-ol (4) (28%) and three isomeric minor compounds 5, 6, 7. The stereochemistry of the major products has been established by spectroscopic techniques and chemical methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240605
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  • 18
    Electronic Resource
    Electronic Resource
    Azomethinimine. V. 1H-NMR-Spektren und sterischer Bau von arylsubstituierten Pyrazolidon-Azomethiniminen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 903-909 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Azomethineimines. V. 1H-N.M.R. Spectra and Steric Properties of Arylsubstituted Pyrazolidone-AzomethineiminesFrom the results of 1H-n.m.r.-spectroscopic investigations we tried to draw conclusions regarding the steric properties of pyrazolidone-azomethineimines 1a-k. The influence of aromatic systems on chemical shift of the methineproton of the 1,3-dipolar centre was calculated using the ring current model. Without the twisted 9-anthryl-substituted compound 1f experimental results show a good correspondence to the values of chemical shift calculated for two of four possible isomeric structures.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240606
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  • 19
    Electronic Resource
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    Zur Synthese und zum Reaktionsverhalten von 2,6-disubst.-5-Acyl-4H-1,3-oxazin-4-thionen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 915-919 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Chemical Behaviour of 2,6-Disubst.-5-acyl-4H-1,3-oxazine-4-thionesNew 2,6-disubst.-5-acyl-4H-1,3-oxazine-4-thiones 4 are synthesized by addition-cyclocondensation reaction between 1,3-diketones and acylisothiocyanates.With perchloric acid ring opening of 4 takes place and N-acyl-acylthioacetamides 5 are obtained. The compounds 5 can be S-alkylated by alkyl halides to form 6. 2-Aroyl-1-aroylamino-1-arylaminoethenes 7 are prepared from 5 or 6 with primary amines. Spectroscopic measurements of 4-7 are discussed.
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    Ionenpaargleichgewichte komplexer Carbeniumionensalze als Modelle für die aktive Spezies bei der kationischen Polymerisation (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 973-977 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ion-pair Equilibria of Complex Carbenium Ion Salts as Models of the Active Species in Cationic PolymerizationThe dissociation equilibria of complex carbenium ion salts [(C6H5)3C⊕, C7H7⊕MtX⊖n+1] have been determined in chloroform, dichloroethane and nitromethane from conductance measurements. The dissociation constants remain almost unchanged for different anions, are however influenced markedly by the polarity of the solvent.The fractions of free and paired ions in these solvents have been calculated.Furthermore the enthalpies and entropies of dissociation have been evaluated.
    Additional Material: 6 Tab.
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  • 21
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    Zur Isomerisierung von Benzilphenylosazonen in Gegenwart von Säuren (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 987-992 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Isomerisation of Benzilphenylosazones in the Presence of AcidsIsomerisation process of the three stereomeric benzilphenylosazones (Z,Z E,E and Z,E) in a melt of trichloracetic acid and in an ethylacetate solution of conc. sulfuric acid is studied. It is established that the convertion runs irreversibly to the stable E,E-isomer at low acid concentration. The process is reversible at high acid concentration and the equilibrium state depends on this concentration.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19823240618
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  • 22
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    Neue Bifunktionelle Brückenfunktionen zur A1-B29-Verklammerung der beiden Insulinketten (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 993-1004 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Novel Bifunctional Bridging Functions for A1-B29 Crosslinking of the Two Insulin ChainsThe positions A1 and B29 of the insulin molecule are crosslinked by the new bifunctional groups U and V. These insulin derivatives are convertible by oxydative sulfitolysis into A1-B29 crosslinked hexa-S-sulfonates, which recombine by tributylphosphan/O2 in high yields to the A1-B29 insulin derivatives, correctly reconstructing the disulfide system, and from which the bridging function is smoothly removable by acidolysis. The example of the bridging function U demonstrates that this principle is also suitable for the combination of both isolated single chains.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19823240619
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    Dreikomponentenreaktionen. XV. Aziridinbildung aus N-(2-Chlor-cyclohexyl)benzimidchlorid und Hydrazin bzw. Phenylhydrazin (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1033-1036 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Three Component Reactions. XV. Aziridine Formation from N-(2-Chloro-cyclohexyl)benzimidchloride
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    URL: http://dx.doi.org/10.1002/prac.19823240624
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    1,3-unsubstituierte 1,2,3,4-Tetrahydrochinazoline aus 1,3-DiaminenXXXII. Mitt. der Serie „Heterocyclen aus o-Aminoketonen“, XXXI. Mitt. vgl. [1] (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 832-840 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,3-Unsubstituted 1,2,3,4-Tetrahydroquinazolines from 1,3-Diamines
    Additional Material: 4 Tab.
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    Zur N-Alkylierung und Dehydrierung von 1,2,3,4-TetrahydrochinazolinenXXXIII. Mitt. der Serie „Heterocyclen aus o-Aminoketonen“, XXXII. Mitt. vgl. [1] (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 841-846 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-Alkylation and Dehydrogenation of 1,2,3,4-Tetrahydroquinazolines
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  • 26
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    Bicyclen. XIII. Umsetzungen von Dicarbonsäure-mono-(norborn-5-en-2-yl)-estern mit Aminen und Aminosäurederivaten (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 851-856 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Bicyclen. XIII. Reactions of Dicarbonic-mono-(norborn-5-en-2-yl)-esters with Amines and Amino Acid Derivatives
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    URL: http://dx.doi.org/10.1002/prac.19823240521
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  • 27
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    d-NMR-Untersuchungen der behinderten Rotation am N—C(X)-Bindungsfragment. XIV. 13C-NMR-Spektren von β-Anilinovinyl-phenyl-thioketonen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 847-850 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: d-N.M.R. Investigations of the Restricted Rotation at the N—C(X) Bonding Fragment. XIV. 13C-N.M.R.-Spectra of β-Anilinovinyl-phenyl-thioketonesN-phenyl-substituted β-anilinovinyl-phenyl-thioketones (1, 2) are investigated for restricted rotations about partial double bonds and preferential conformers by 1H- and 13C-n.m.r. spectroscopy. Substituent dependent 13C-chemical shift variations and the strength control of the intramolecular hydrogen bridge are discussed.
    Additional Material: 1 Ill.
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  • 28
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    Cyclisation of Substituted 2-(4-Methyl-pent-3-enyl)-5,8-dihydroxy-1,4-naphthoquinones (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 865-869 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cyclisierung von 2(4-Methyl-pent-3-enyl)-5,8-dihydroxy-naphtho-1,4-chinonen
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240523
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    Triazolines. XII. Permanganate Oxidation of 1,2,3,-Triazolines Using Phase-Transfer Catalysis. Electronic and steric effects (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 857-864 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Triazoline. XII. Permanganat-Oxidation von 1,2,3-Triazolinen unter Verwendung der Phasen-Transfer-Katalyse. Elektronische und sterische Effekte
    Additional Material: 2 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240522
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    Lettau, H.: Chemie der Heterocyclen. 365 S., 24 Abb., 54 Tab., 16,5×23 cm. Leipzig: VEB Deutscher Verlag für Grundstoffindustrie 1980. Leinen 48, - M (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 871-872 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    URL: http://dx.doi.org/10.1002/prac.19823240525
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    Kemp. D. S., Vellaccio, F.: Organic Chemistry. XIII 1422 S., zahlr. z.T. farb. Abb., zahlr. Tab., 18,5×27 cm. New York: Worth Publ. Inc. 1980. Pappe/Leinen, geb. 21.95 $ (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 870-871 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/prac.19823240524
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    Masthead (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982) 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/prac.19823240601
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    Ionisation von Triphenylmethylbromid in Nitromethan (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 882-886 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ionisation of Triphenylmethylbromide in NitromethaneDissolving triphenylmethylbromide in nitromethane leads to the formation of HBr which complicates conductivity and spectroscopic measurements of carbenium ion absorption. As a result of addition of bromide ions (as tetraethylammonium bromide = Et4NBr) the triphenylmethylabsorption totally disappeares. It can be concluded that Ph3CBr in nitromethane is partially present in form of free (solvated) ions. The carbenium ion concentration has been determined as a function of gross concentration and temperature.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19823240603
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    Synthese und Oxydation von 1-(1,3-Thiazol-2-yl)-pyrazolid-3-onen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 873-881 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Oxydation of 1-(1,3-Thiazol-2-yl)-pyrazolidin-3-onesThe 1-(1,3-thiazol-2-yl)-pyrazolid-3-ones 4 are synthesized by reaction of 1-thiocarbamoyl-pyrazolidin-3-one 2 with α-halogenaldehydes and α-halogenketones, respectively. The structure of 4 is proved by their 1H-n.m.r. and mass spectra. Oxydative dimerisation of 4 leads to the bisazomethinimines 10. The compounds 10 represent a new type of azomethinimines with a quinoid structure.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19823240602
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    Umsetzung von α-Cyano-β-aryl-acrylsäure-ethylestern mit Hydrazin, eine Retro-Knoevenagel-Reaktion (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 910-914 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of α-Cyano-β-aryl Acrylic Acid Ethylesters with Hydrazine, a Retro-Knoevenagel-ReactionWe tried to obtain 4-cyano 5-aryl pyrazolidones-(3) 3a, b and related azomethine imines 4a, b. However the reaction of α-cyano β-aryl acrylic acid ethylesters 2a, b with hydrazine yields the familiar cyano acetic acid arylidene hydrazides 5a, b by cleavage of the carbon-carbon double bond. 5a, b react with pyrene-1-aldehyde to 7a, b. Formation of 5a, b is proved by an independent synthesis. 5a, b and 7a, b are investigated by mass spectrometry.
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240607
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    Synthese und Struktur neuer 1-Imino-1λ4,2,4,6-thiatriazine (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 920-924 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Structure of Novel 1-Imino-1λ4,2,4,6-thiatriazinesO,O′-Dimethyldiisobiurete 1 is cyclisized with N-arylsulfonyl sulfinyl amines 4a-c to 1λ4,2,4,6-thiatriazines 9a-c. The reaction with corresponding sulfur diimides 7a-c leads to identical 1λ4,2,4,6-thiatriazines 9a-c. Methylation products from 9c with diazomethane are isolated by column chromatography. The cyclization mechanism with a substituted imido sulfurous diamide intermediate is discussed.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240609
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    Zum Desaktivierungsverhalten photoangeregter Aryltropyliumionen. II. Fluoreszenzlöschung von Aryltropyliumionen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 925-932 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: About the Deactivation Behaviour of Photoexcited Aryltropyliumions. II. Fluorescence Quenching of AryltropyliumionsThe properties of aryltropyliumions in the excited singlet state were studied. These ions are very strong acceptors. So the fluorescence is quenched by aromatic donors. The rates of fluorescence quenching depend on the ionization potential of the donor. This fact is discussed in terms of mechanisms derived by WELLER et al. The results were related to the light stability of aryltropyliumions.
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    Reaktion von methylenaktiven Nitrilen und Cyanamid mit acylierten Enaminen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 933-941 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of Methylene Active Nitriles and Cyanamide with Acylated EnaminesThe addition products from enamines onto isocyanates and isothiocyanates, i.e. substituted β-aminoacrylo amides 1 and thioamides 2, react with malononitrile to yield the 6-amino-1-aryl-5-cyano-pyridin-2-ones 3 and -thiones 4 among them 5,6,7,8-tetrahydroisoquinolin-1-ones and -thiones. From ethyl cyanoacetate the 5-cyano-6-hydroxy-pyridin-2-ones 7 and from benzoyl acetonitrile the 6-phenyl-pyridin-2-ones 8 are formed. The replacement of malononitrile by cyanamide yields the 2-amino-3-aryl-pyrimidin-4-ones 5 and -thiones 6 among them 5,6,7,8-tetrahydroquinazolin-4-ones and -thiones. The not isolated β-acyl enamines derived from enamines and acid chlorides react with malononitrile or cyanamide to form the pyridin-2-ones 14 or pyrimidin-2-ones 15 caused by Dimroth-rearrangement.
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240611
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    Zur Synthese und Abwandlung N-substituierter 2(1 H)-Pyrimidin-thione - Ein einfacher Zugang zu Pyrimidino[2,3-b]1,3,4-thiadiazoliumsalzen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 942-946 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Transformation of N-substituted 2(1 H)-Pyrimidine-thiones - A Simple Route to Pyrimidino [2,3-b]1,3,4-thiadiazolium SaltsN-substituted 2(1 H)-pyrimidine-thiones 4-6 can be prepared by reaction of primary amines or unsubstituted or substituted hydrazines with 3-isothiocyanato-propene-(2)-iminium salts 2, which are easily aviable from 3-chloro-propene-(2)-iminium salts 1. The 2(1 H)-pyrimidine-thiones are transformed into 2-alkylmercapto-pyrimidinium salts 7 and pyrimidino[2,3-b]1,3,4-thiadiazolium salts 9, respectively.
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19823240612
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    Eigenschaften und thermische Reaktionen von Komplexen der Arendiazoniumsalze mit Kronenethern (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 947-954 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Properties and Thermal Reactions from Complexes of Arene Diazonium Salts with Crown EthersIn contrast to 18-crown-6, the substituted crown ethers Benzo-18-crown-6, Dibenzo-18-crown-6, and Naphtho-18-crown-6 form in solution complexes with p-CH3—C6H4—N2+BF4-characterized by a broad charge transfer absorption up to 550 nm. The formation constants lg Kc are 2,32 2,16 and 1,44 for Benzo-, Dibenzo-, and Naphtho-18-crown-6, respectively. Formation enthalpy ΔH = -7,5 kJ/mol and entropy ΔS = +18 J/K mol are measured in the case of p-Cl—C6H4—N2+BF4- and Dibenzo-18-crown-6 (20°). Kc depends on substituents in the arene ring of the diazonium salt; ϱ = +0,8. Thermal dediazoniation in the presence of Crown ethers results in high yields of the corresponding arene. This is explained by a fast radical chain reaction between the diazonium salt and the polyether (Meerwein-Reduction).
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    Untersuchungen über den Thermischen Zerfall von n-Dodecylcyclopentan in der Gasphase (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 964-972 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Investigations on the Thermal Decomposition of n-Dodecylcyclopentane in the Gas PhaseIn the thermal decomposition of n-dodecylcyclopentane at 670 and 750°C in a laboratory tubular reactor mixtures of hydrogen and 57 and 113 hydrocarbons respectively are formed. The mixtures have been analyzed and identified by capillary gas chromatography and by mass spectrometry. The distribution of the reaction products is used for mechanistic discussions.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19823240615
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    Photoinduzierte Zersetzung von Arendiazoniumsalzen durch Pyrazolon- und NaphtholfarbstoffeVI. Mitt. der Serie „Lichtinitiierte Polymer- und Polymerisationsreaktionen“, V. Mitt.: H. BAUMANN, H.-J. TIMPE u. V. REHAK, Chem. Phys. Lett. 89, 315 (1982). (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 955-963 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Photoinduced Decomposition of Arene Diazonium Salts by Pyrazolone and Naphthole DyesThe pyrazolone dyes 1-4 in their photoexcited singlet states bleached out by arene diazonium salts which dediazoniate during the reaction. Both compounds react in equal proportion. The quantum yields increase with the increasing of the concentration and electron acceptor properties of the diazonium salts and increasing of the electron donor properties of the dyes.The quantum yields of dye bleaching decrease on addition of DABCO or allylic thiourea, whereas the dediazoniation is not influenced. A kinetic model based on a primary electron transfer from the excited dye to arene diazonium salt is presented and used to determine rate constants for individual partial reactions.
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    Desaktivierungsverhalten von Arenen und Heteroarenen. XXXIII. Zur statischen Löschung der Fluoreszenz von Azinium-Anthracenen in Lösungsmitteln mit n-Donatoreigenschaften (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 978-986 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Deactivation Behaviour of Arenes and Heteroarenes. XXXIII. Static Fluorescence Quenching of Azinium-Anthracenes by Solvents of n-Donor PropertiesThe fluorescence of azinium-anthracenes is quenched by solvents of n-donor properties. A model of static quenching by electron transfer is developed analogous to the dynamic process. The rates of quenching correlate with the donor properties of the solvent (ionization potential) and the acceptor properties of the fluorophor (reduction potential). In the same way as in the case of dynamic quenching this static process is characterized by a high free enthalpy of activation. The existence of a thermally induced step in the process of the electron transfer affects the temperature dependence of the fluorescence quantum yields. The analysis of this temperature dependence on the basis of an Arrhenius equation shows a linear relationship.
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    Cyclisierungsreaktionen β,γ-ungesättigter Kohlensäurederivate. VII. Synthese eindeutig N-acylierter Thiazolidin-2-one und Oxazolidin-2-one (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1005-1010 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cyclization Reactions of β,γ-Unsaturated Derivatives of Carbonic Acid. VII. Synthesis of Unequivocal N-Acylated Thiazolidine-2-ones and Oxazolidine-2-onesA new synthetic route to N-acylated thiazolidine-2-ones and oxazolidine-2-ones is reported: The reaction of carboxylic acid chlorides with 2-alkoxy-2-thiazolines (1, 2) or -2-oxazolines (3) yields unequivocal N-acylated thiazolidine-2-ones (4-6) or oxazolidine-2-ones (7). Bifunctional acid chlorides, e.g. oxalyl chloride or thiophosgene yield compounds 11 and 12.
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    Dreikomponentenreaktionen. XIV. 2-Imidazoline und 1,2,4-Triazole durch Ringschlußreaktionen von N-(2-Chlor-alkyl)imidchloriden mit Hydrazin und Hydrazonen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1026-1032 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Three Component Reactions. XIV. 2-Imidazolines and 1,2,4-Triazoles by Ring Closure Reactions of N-(2-Chloro-alkyl)imidchlorides with Hydrazine and HydrazonesN-(2-Chloro-alkyl)benzimidchlorides (1a and 1b) give with hydrazine in dependence on the reaction medium 1,1′-bis(2-imidazolines) (4), 1-benzamido-2-imidazolines (5) or 1,2,4-triazoles (6 and 7) and also N-(2-chloro-alkyl)benzamides (8). From imidchlorides (1a-c) and hydrazones Schiff bases (10) of 1-amino-2-imidazolines are obtained. They are not cleavable into free 1-amino-2-imidazolines.
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    Tetrathiafulvalene. XVIII. Elektronen-Donator-Akzeptor-Komplexe von Tetrathiafulvalenen (TTF) mit Tetracyanochinodimethan (TCNQ) (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1011-1016 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Tetrathiafulvalenes. XVIII. Charge-Transfer-Complexes of Tetrathiafulvalenes (TTF) with Tetracyanoquinodimethane (TCNQ)TTF form CT-complexes with TCNQ in solvents having small ET-values, whose association constants are estimated. The energy of the absorption maximum of the CT-complex between octamethylentetrathiafulvalene and TCNQ increases linearly with decreasing ET-values of the solvents. In chloroform the energy of the absorption maximum of the CT-complexes between TCNQ and tetrathiafulvalenes increases linearly with the oxidation potential of the tetrathiafulvalene.
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    Photochemische Primärprozesse von Xanthenfarbstoffen. I. Blitzlichtspektroskopische Untersuchung der Primärprozesse von Selenopyronin (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1017-1025 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Photochemical Primary Processes of Xanthene Dyes. I. Investigations of the Primary Processes of Selenopyronine by Flash ExcitationThe triplet-state of selenopyronine absorbs light in the whole investigated spectral range (λmax = 400 nm, 480 nm, 690 nm). As results of the bimolecular triplet decay a half-reduced (λmax = 430 nm) and a half-oxidized (λmax = 475 nm) form of the dye are observed. p-Benzoquinone quenches the triplet-state (k7 = 1,5 · 109 l/mol s) and the results are the half-oxidized form and the p-benzosemiquinone ion. For these two products different decay processes exist. The reducing agents DABCO, EDTA and Hydroquinone also quench the triplet state (k10 = 1,2 · 106 l/mol s, k11 = 1,0 · 106 l/mol s, k12 = 1,0 · 109 l/mol s) and as result the half-reduced form is observed. Measurements with thiopyronine give analogous results, which are in good agreement with investigations published in the literature.
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    Darstellung und Charakterisierung von Metallchelaten unter Verwendung bicyclischer Dicarbonsäuren (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1037-1044 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Preparation and Properties of Metal Chelates by Using Bicyclic Dicarboxylic Acids
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    Cyclization of m-Diethynyl Benzene. A facile synthesis of (4,4,4,4,4,4)metacyclophane-(1,3,11,13,21,23,31,33,41,43,51,53)dodecayne (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1052-1054 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cyclisierung von m-Diethinylbenzen. Eine brauchbare Synthese von (4,4,4,4,4,4)Metacyclophane-(1,3,11,13,21,23,31,33,41,43,51,53)dodecain
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    Zur Darstellung von α-Amidoalkyl-aryl-ketonen (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1055-1059 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Synthesis of α-Amidoalkyl-aryl-ketones
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    Cyclocondensation of Cyanoacetamide and N-Substituted Cyanoacetamides with 2-Arylmethylene indan-1-one and -indan-1,3-diones (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1045-1051 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Cyclokondensation von Cyanoacetamiden und N-substituierten Cyanoacetamiden mit 2-Arylmethylen indan-1-onen und -indan-1,3-dionen
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    Über die Autoxidation von 1,2-Dimethylcyclohex-1-en (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1060-1062 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Autoxidation of 1,2-Dimethylcyclohex-1-ene
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    Organische Phosphorverbindungen. XIV. Reaktivitätsuntersuchungen an pestiziden Thiophosphorsäuredimethylesteramiden (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1063-1068 
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    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Organic Phosphorus Compounds. XIV. Studies on the Reactivity of Pesticidal Phosphoramidothioate Dimethyl Esters
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    Mathieu, J., Weill-Raynal, J.: Bildung von C—C-Bindungen, Band III: Einführung einer Kohlenstoff-Kette mit einer α-Funktion. XII, 563 Seiten, 1235 Formelschemata, 310 Tabellen. Stuttgart: Georg Thieme Verlag 1979. 248,- DM. (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1069-1069 
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    Keywords: Chemistry ; Organic Chemistry
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    Hauptmann, S., Mann, G., Hantschmann, A.: Aufgaben zur organischen Chemie. 277 S., 13 Abb., 14 × 22 cm. Leipzig: VEB Deutscher Verlag für Grundstoffindustrie 1981. Gebunden 18,- M (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1070-1071 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
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    Mortimer, Ch. E., (übersetzt von Jacobi, P. u. Schweizer, H. J.): „Chemie - Das Basiswissen der Chemie in Schwerpunkten“. 3. Aufl., 810S., 206 Abb., 102 Tab., Stuttgart-New York: Georg Thieme Verlag 1980. 59,- DM. (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1070-1070 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
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    McKellar, J. F.(†), Allen, N. S.: Photochemistry of man-made polymers. Hrsg. Applied Scienc Publishers Ltd., London 1979. 306 S., 138 Abb., 37 Tab., London: Applied Science Publishers Ltd. 1979. £24,00 (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 1071-1072 
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    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    URL: http://dx.doi.org/10.1002/prac.19823240634
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    Boron chelates and boron-metal chelates. VIII. Constitution of Boron Chelates with C=N GroupsDedicated to Professor Fritz Umland on the Occasion of his 60th Birthday. (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 484 (1982), S. 41-52 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Borchelate und Bormetallchelate. VIII. Die Konstitution von Borchelaten mit C=N-GruppenDie Chelate 1-5 wurden aus der Carbonyl-Komponente, dem primären Amin bzw. Hydrazin und der organischen Borsäure in guter Ausbeute erhalten. Die Verbindungen wurden analytisch (Elementaranalyse, quantitative Bestimmung acider Wasserstoffatome und reduzierbarer Gruppen) und spektroskopisch (UV-VIS; IR; NMR: 11B, 1H, 13C) charakterisiert. 4 reagiert beim Erhitzen unter Abgabe von Benzol zu Chelat 6, das analytisch und spektroskopisch untersucht wurde.
    Notes: The chelates 1-5 were obtained in good yield by reacting the carbonyl component with primary amine or hydrazine and organo-boric acid. The compounds were characterized analytically (by elemental analysis and quantitative determinations of acidic hydrogen atoms and reducible groups) and spectroscopically (uv-vis; ir; nmr: 11B, 1H, 13C). Benzene is liberated on heating 4. The novel chelate 6 was investigated using analytical and spectroscopic methods.
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    Acyl- und Alkylidenphosphane. XIX. Molekül- und Kristallstruktur des 2,4-Bis(dimethylamino)-1,3-diphenyl-1,3-diphosphetans (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 23-35 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acyl and Alkylidenephosphines. XlX. Molecular and Crystal Structure of 2,4-Bis (dimethyl-amino) -1,3-diphenyl-l, 3-diphosphetane2,4-Bis(dimethylamino)-1,3-diphenyl-1,3-diphosphetane 2a which is isolated as a byproduct in the synthesis of (E)-(dimethylamino)methylidene-phenylphosphine 1a crystallizes in the monoclinic space group P21/c. The dimensions of the unit cell determined at -65 ± 5°C are: a = 1 004(1); b = 1 018(3); c = 1 873(2) pm; β = 105.15(8)°; Z = 4. As it is shown by a low temperature X-ray structure determination (Rg = 3.5%) the phenyl groups are placed above and the dimethylamino groups below the folded 1,3-diphosphetane ring; the molecule with its differently twisted substituents, however, deviates considerably from point symmetry mm2. The dihedral angle between the P1—C1n—P2 planes (n = 1 or 2) is found to be 153°. The relatively long Pn—C1n bond distances (187 to 191 pm) indicate a strained ring system; in solution 2a decomposes to some extent and forms monomeric 1a again. Further characteristic average bond distances and angles are: Pn—C4n (phenyl) 184; C—N 146 pm; P1—C1n—P2 93°; C11—Pn—C12 84° and Pn—C1n—Nn 116°.
    Notes: Das bei der Synthese des (E)-(Dimethylamino)methyliden-phenylphosphans 1a als Nebenprodukt gebildete 2,4-Bis(dimethylamino)-1,3-diphenyl-1,3-diphosphetan 2a kristallisiert monoklin in der Raumgruppe P21/c mit den dei der Meßtemperatur von -65 ± 5°C bestimmten Gitterkonstanten: a = 1 004(1); b = 1 018(3); c = 1 873(2) pm; β = 105,15(8)°; Z = 4. Nach den Ergebnissen der Röntgenstrukturanalyse (Rg = 3,5%) ordnen sich die Phenylgruppen oberhalb, die Dimethylamino-Gruppen unterhalb des mit 153° an der P1-P2-Achse gefalteten 1,3-Diphosphetan-Rings an; durch unterschiedliche Drehung der Substituenten weicht aber das Molekül stark von der Punktsymmetrie mm2 ab. Die mit 187 bis 191 pm langen endocyclischen Pn-C1n-Abstände (n = 1 oder 2) weisen auf einen gespannten Ring hin; in Lösung zerfällt 2a wieder teilweise in das Monomere 1a. Weitere charakteristische mittlere Bindungsabstände und -winkel sind: Pn-C4n (Phenyl) 184; C—N 146 pm; P1—C1n—P2 93°; C11—Pn—C12 84° und Pn—C1n—Nn 116°.
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    Silaethene. VII. Darstellung und Charakterisierung SiF-haltiger Silacyclobutane Silaethene. VII. Preparation and Characterization of Silacyclobutanes with SiF Groups (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 53-64 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Silaethene. VII. Preparation and Characterization of Silacyclobutanes with SiF Groups and Me(F)- can be prepared in moderate to good yields by fluorination of the corresponding chlorine compounds with SbF3, ZnF2, AgF, or AgF2. The Lewis acidic fluorides SbF3 and ZnF3 lead to ring cleavage products in considerable amounts. With SbF3 in the presence of catalytic amounts of SbCl5 ring cleavage via formation of HX (X = F, Cl) is the main reaction. Disilacyclobutanes 3 and 4 can be prepared, alternatively, by gas phase pyrolysis of 1 and 2, respectively.
    Notes: und lassen sich in mäßigen bis guten Ausbeuten durch Fluorierung der entsprechenden Chlorverbindungen mit SbF3, ZnF2, AgF oder AgF2 darstellen. Die Lewis-aciden Fluoride SbF3 und ZnF2 führen in erheblichem Umfang zu Ringspaltungsprodukten. Bei Verwendung von SbF3 in Gegenwart katalytischer Mengen SbCl5 wird durch Bildung von HX (X = F, Cl) die Spaltung der Ringe zur Hauptreaktion. Die Disilacyclobutane 3 und 4 sind auch durch Gasphasenpyrolyse von 1 und 2 zugänglich.
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    Die K4[Ag4O4]  -  Strukturfamilie (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 101-114 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: K4[Ag404] Structure TypeM4[Ag4O4] (M = Li—Cs) and M4[Cu4O4] (M = Li—Rb) have been prepared anew; as an example the crystal structure of K4[Ag4O4] has been revised.Contrary to our first report [2, 3] it crystallizes in the space-group I4m2 with the “ring” [Ag4O4]4- which is not plane, however. Each two O2- (trans-arrangement) are rather (0.02 Å) above and below the plane of the “ring”, respectively. The new parameters are given in the text. The distances, for example d(Ag+·O2-) = 2.058 Å and the Madelung Part of Lattice Energy, MAPLE, are both in a very good agreement with the measurements and calculations, respectively, which have been done on other ternary oxides with silver.
    Notes: Die Verbindungen M4[Ag4O4] mit M = Li—Cs und M4[Cu4O4] mit M = Li—Rb wurden erneut dargestellt; die Kristallstruktur wurde am K4[Ag4O4] überprüft.Entgegen unserem ersten Befund [2, 3] (I4) liegt in I4m2 zwar die Gruppe [Ag4O4]4- vor, doch sind je zwei O2- (trans-Stellung) etwas (0,02 Å) oberhalb bzw. unterhalb der “Ringebene” ausgelenkt. Bezüglich der neuen Parameter siehe Text. Die Abstände, z. B. d(Ag+→O2-) = 2,058 Å, sowie der Madelung-Anteil der Gitterenergie, MAPLE, stimmen mit Messungen bzw. Berechnungen an anderen ternären Oxiden mit Silber sehr gut überein.
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    Die Kristallstruktur von p-Tolylbis(diethyldithiocarbamato)-thallium(III) und Phenylbis(methylxanthogenato)bismut(III) (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 217-224 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of p-Tolylbis (diethyldithiocarbamato)thallium(III) and Phenylbis-(methylxanthogenato)bismut(III)The crystal structure of 4-CH3(C6H4)—Tl(S2CN(C2H5)2)2 (P21/c, a = 11.973(3), b = 10.692(3), c = 19.232(4) Å, β = 114.02(2)°, Z = 4) and C6H5-Bi(S2COCH3)2 (P21/c, a = 6.395(2), b = 24.684(8), c = 9.732(3) Å, β = 101.38(3)°, Z = 4) was solved from X-ray diffraction data of single crystals. From the interatomic distances follows that the dithiocarbamate and xanthogenate ligands coordinate asymmetrically bidentate to the metal as presumed and exclusively through the sulfur atoms. Differences in the coordination sphere of bismut and thallium give evidence for a “stereochemically active lone pair” on the bismut atom.
    Notes: Die Kristallstruktur von 4-CH3(C6H4)—Tl(S2CN(C2H5)2)2 (P21/c, a = 11,973(3) Å, b = 10,692(3) Å, c = 19,232(4) Å, β = 114,02(2)°, Z = 4) und C6H5-Bi(S2COCH3)2 (P21/c, a = 6,395(2) Å, b = 24,684(8) Å, c = 9,732(3) Å, β = 101,38(3)°, Z = 4) konnte aus Röntgendiffraktometerdaten von Einkristallen ermittelt werden. Die interatomaren Abstände zeigen daß, die Koordination von Dithiocarbamat und Xanthogenat an die Metallatome wie schon vermutet stark asymmetrisch zweizähnig und ausschließlich über Schwefel erfolgt. Die Koordinationsunterschiede zwischen Bismut und Thallium ergeben ein deutliches Indiz für die “stereochemische Aktivität” des freien Elektronenpaares am Bismutatom.
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    Zur Reaktion von farblosem Phosphor mit Cyclohexen und Sauerstoff (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 22-32 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About the Reaction of Colourless Phosphorus with Cyclohexene and OxygenIn the presence of cyclohexene, oxygen, and cyclohexene hydroperoxide the P4 molecule is decomposed into an organo-phosphorus oxide - network. NMR investigations on hydrolysis, alcoholysis and chlorination products have shown this cyclohexene-phosphorus oxide to consist essentially of anhydrides and partially esterified anhydrides of phosphonous acids, phosphonic acids, phosphorous acids, and phosphoric acids. The anhydrides of cis-cyclohexane-1,2-diphosphonic acid and benzene phosphonic acid contain the largest amount of the whole organically bonded phosphorus, the formation of the latter compound being attributed to the participation of the solvent (benzene) in the reaction.
    Notes: Beim Abbau des P4-Moleküls in Gegenwart von Cyclohexen, Sauerstoff und Cyclohexenhydroperoxid entsteht ein organyliertes „Phosphor-Netzoxid“. Durch NMR-spektroskopische Untersuchungen von Hydrolyse-, Alkoholyse- und Chlorierungsprodukten dieses Cyclo-hexen-Phosphoroxids konnte nachgewiesen werden, daß es sich im wesentlichen aus den Anhydriden bzw. partiell veresterten Anhydriden von phosphonigen Säuren, Phosphonsäuren, phosphoriger Säure und Phosphorsäure zusammensetzt. Der größte Anteil organisch gebundenen Phospors liegt in Form der Anhydride von cis-Cyclohexan-1,2-diphosphonsäure und Benzenphosphonsäure vor, wobei die Bildung letzterer Verbindung auf die Einbeziehung des Lösungsmittels (Benzen) in die Reaktion zurückzuführen ist.
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    Gallium-, Indium-Mangan- und Thallium-Rhenium-Carbonylverbindungen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 234-240 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Gallium-, Indium-Manganese-, and Thallium-Rhenium Carbonyl CompoundsCompounds of type Na{Cl4-nM[Mn(CO)5]n} (M = Ga, In; n = 1, 2, 3) were prepared by reaction of the Lewis acids MCl3 and NaMn(CO)5. Instead of the sodium salts were obtained the compounds (C3H7CO2)2InMn(CO)4L (Indium atom with the coordination number 5) from Indium(III) butyrate with two carboxylate groups bonded as chelate ligands and NaMn(CO)4L [L = CO, P(C6H5)3] in the molar ratio 1:1. By reacting TlCl with NaRe(CO)5 i.r. spectroscopic measurements of the solution pointed out the intermediate product TlRe(CO)5, which was unstable against a disproportionation reaction into Tl and Tl[Re(CO)5]3. The last named compound delivered as a thermal decomposition product Re2(CO)8[μ-TlRe(CO)5]2. I.r. bands of the new compounds were assigned.
    Notes: Verbindungen des Typs Na{Cl4-nM[Mn(CO)5]n} (M = Ga, In; n = 1, 2, 3) wurden durch Umsetzungen der Lewissäuren MCl3 mit NaMn(CO)5 hergestellt. An Stelle der Natriumsalze entstanden die beiden Produkte (C3H7CO2)2InMn(CO)4L (Indiumatom mit Koordinationszahl 5) bei Umsetzungen zwischen Indium(III)-butyrat mit zwei chelatartig gebundenen Carboxylatgruppen und NaMn(CO)4L [L = CO, P(C6H5)3] im Molverhältnis 1:1. Bei der Reaktion von TlCl mit NaRe(CO)5 zeigten infrarotspektroskopische Lösungsuntersuchungen das Zwischenprodukt TlRe(CO)5, welches instabil gegenüber einer Disproportionierungsreaktion in Thalliummetall und Tl[Re(CO)5]3 war. Die letztgenannte Verbindung lieferte als ein thermisches Zersetzungsprodukt Re2(CO)8[μ-TlRe(CO)5]2. Es wurden den neuen Verbindungen IR-Banden zugeordnet.
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    Element-Element-Bindungen. I. Synthese und Struktur des Tetra(tert-butyl)tetrarsetans und des Tetra(tert-butyl)tetrastibetans (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 70-89 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Element-Element Bonds. I. Syntheses and Structure of Tetra(tert-butyl)tetrarsetane and of Tetra(tert-butyl)tetrastibetaneDilithium (tert-butyl)arsenide reacts with (tert-butyl)dichloroarsine to give tetra-(tert-butyl)tetrarsetane 1; homologous tetra(tert-butyl)tetrastibetane 2 is formed by reduction of (tert-butyl)dichlorostibane with magnesium. The isotypic compounds 1/2 crystallize in the monoclinic space group P21/c with Z = 4. The dimensions of the unit cells determined at -45 ± 5°C are: a = 957.4(8)/1 000.2(3); b = 1 399.1(14)/1 423.9(4); c = 1 697.4(9)/1 749.8(7) pm; β = 96.02(6)/96.77(3)°. As shown by low temperature X-ray structure determinations (3 531/3 232 symmetry independent reflections; Rg = 4.0/4.6%) the four membered rings E4 (E = As or Sb) are folded; in all-trans configuration the bulky organic substituents occupy pseudo-equatorial positions. Characteristic averaged bond distances and angles are: E—E 244/282; E—C 202/221 pm; ∢ E—E—E 86/85° ∢ E—E—C 101/99°. The dihedral angels of the bisphenoides built up by the atoms of the rings are found to be 139/133°.
    Notes: Dilithium-(tert-butyl)arsenid reagiert mit (tert-Butyl)dichlorarsan zum Tetra(tert-butyl)tetrarsetan 1; das homologe Tetrastibetan 2 bildet sich bei der Reduktion von (tert-Butyl)dichlorstiban mit Magnesium. Die isotypen Verbindungen kristallisieren monoklin in der Raumgruppe P21/c mit Z = 4. Die bei der Meßtemperatur von -45 ± 5°C bestimmten Gitterkonstanten von 1/2 sind: a = 957,4(8)/1 000,2(3); b = 1 399,1(14)/1 423,9(4); c = 1 697,4(9)/1 749,8(7) pm; β = 96,02(6)/96,77(3)°. Nach den Ergebnissen der Röntgenstrukturanalysen (3 531/3 232 symmetrieunabhängige Reflexe, Rg = 4,0/4,6%) sind die E4-Ringe (E = As, Sb) gefaltet; die voluminösen organischen Substituenten stehen pseudo-äquatorial in der all-trans-Konfiguration. Charakteristische mittlere Bindungslängen und -winkel sind: E—E 244/282; E—C 202/221 pm; ∢ E—E—E 86/85° ∢ E—E—C 101/99°. Die Diederwinkel der von den Ringatomen aufgespannten Bisphenoide betragen 139/133°.
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    Trimethylsilylverbindungen der Vb-Elemente. II. Molekül- und KristallStruktur des Tetrakis(trimethylsilyl)-diarsans (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 90-101 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trimethylsilyl Derivatives of Vb-Elements. II. Molecular and Crystal Structure of Tetrakis(trimethylsilyl)diarsinePale yellow tetrakis(trimethylsilyl)diarsine 1 which is easily obtained from lithium bis(trimethylsilyl)arsenide · 2 tetrahydrofurane (THF) and 1,2-dibromoethane crystallizes in a trigonal, acentric space group. The dimensions of the unit cell determined at -95 ± 5°C are: a = 974.2(2); c = 2 080.0(4) pm; Z = 3. Considering anomalous dispersion the refinement of structural data in space group P3121 converges at an R-value of 0.060, in its enantiomorph P3221, however, at 0.031. With a dihedral angle Si2′—As′—As—Si1 of -125.7° the molecule adopts gauche conformation. Both bis(trimethylsilyl)arsino groups are symmetry-related by the crystallographic operation of the diad. Characteristic bond lengths and angles are: As—As 245.8(1); As—Si 236.5(1) and 236.2(2) pm; Si—As—Si 100.90(5); As—As—Si 93.87(3) and 113.63(4)°. The shortest intermolecular As—As distance is found to be 662 pm.
    Notes: Das schwach gelbe, aus Lithium-bis(trimethylsilyl)arsenid · 2 Tetrahydrofuran (THF) und 1,2-Dibromäthan leicht zugängliche Tetrakis(trimethylsilyl)diarsan 1 kristallisiert trigonal mit den bei der Meßtemperatur von -95 ± 5°C verfeinerten Gitterkonstanten: a = 974,2(2); c = 2 080,0(4) pm; Z = 3. Unter Berücksichtigung der anomalen Dispersion konvergieren die Verfeinerungen der Röntgenstrukturanalyse in der Raumgruppe P3121 bei einem R-Wert von 0,060, in ihrem Enantiomorphen P3221 bei 0,031. Mit einem Diederwinkel Si2′—As′—As—Si1 von -125,7° weist das Molekül gauche Konformation auf; beide Bis(trimethylsilyl)arsano-Gruppen werden über die kristallographische Symmetrieoperation der zweizähligen Drehachse ineinander überführt. Charakteristische Bindungslängen und -winkel sind: As—As 245,8(1); As—Si 236,5(1) und 236,2(2) pm; Si—As—Si 100,90(5); As—As—Si 93,87(3) und 113,63(4)°. Der kürzeste intermolekulare As—As-Abstand beträgt 662 pm.
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    Über Chalkogenolate. 108. Untersuchungen über Perthiocyansäure 1. Darstellung und Eigenschaften von Perthiocyanaten (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 102-110 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 108. Studies on Perthiocyanic Acid. 1. Synthesis and Properties of PerthiocyanatesThe perthiocyanates \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm }3{\rm H}_{\rm 2} {\rm O mit M = [(C}_{\rm 6} {\rm H}_{\rm 5} {\rm)}_{\rm 4} {\rm As] bzw}{\rm . M}_{\rm 2} {\rm = Ba,}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm 2H}_{\rm 2} {\rm O mit M = Na, K,}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm H}_{\rm 2} {\rm O mit M = Rb, Cs bzw}{\rm . M}_{\rm 2} {\rm = Cu, Cd und}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm mit M = NH, Tl, Ag bzw}{\rm . M}_{\rm 2} {\rm = Pb, Hg}} \\ \end{array} $$\end{document} have been prepared by different techniques. The compounds were characterized by means of diverse methods.
    Notes: Die nach unterschiedlichen Verfahren hergestellten Perthiocyanate \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm }3{\rm H}_{\rm 2} {\rm O mit M = [(C}_{\rm 6} {\rm H}_{\rm 5} {\rm)}_{\rm 4} {\rm As] bzw}{\rm . M}_{\rm 2} {\rm = Ba,}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm 2H}_{\rm 2} {\rm O mit M = Na, K,}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm }{\rm H}_{\rm 2} {\rm O mit M = Rb, Cs bzw}{\rm . M}_{\rm 2} {\rm = Cu, Cd und}} \\ {{\rm M}_{\rm 2} [{\rm C}_{\rm 2} {\rm N}_{\rm 2} {\rm S}_{\rm 3}]{\rm mit M = NH, Tl, Ag bzw}{\rm . M}_{\rm 2} {\rm = Pb, Hg}} \\ \end{array} $$\end{document} wurden mit verschiedenen Methoden charakterisiert.
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    Struktur und Reaktionen von Phosphorsäure-tris(N-dichlorphosphino-N-methylamid). Phosphorsäure-tris(N-phenylchlorphosphino-N-methylamid) (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 187-192 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Reactions of Phosphoric tris(N-dichlorophosphino-N-methylamide). Phosphoric tris(N-phenylchlorophosphino-N-methylamide)The X-ray structural analysis of phosphoric tris(N-dichlorophosphino-N-methylamide), I, is reported. Synthesis, properties and nmr data of phosphoric tris(N-phenylchlorophosphino-N-methylamide), III, are described.
    Notes: Es wird die Röntgenstrukturanalyse von Phosphorsäure-tris(N-dichlorphosphino-N-methylamid), I, mitgeteilt. Die Synthese, Eigenschaften und NMR-Daten von Phosphorsäure-tris(N-phenylchlorphosphino-N-methylamid), III, sind beschrieben.
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    Hochdrucksynthesen von Carbonaten. VII. Kalium-Lanthanoid-Carbonate (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 221-228 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: High Pressure Syntheses of Carbonates. VII. Potassium Lanthanoid CarbonatesThe anhydrous carbonates KLn(CO3)2 with Ln = La to Lu including Y are prepared either from KLn(CO3)2 · xH2O (Ln = La to Nd) at 350°C and CO2 pressures to 3 000 bar or from K2CO3 and Ln2(C2O4)3 · xH2O (Ln = Sm to Lu including Y) under CO2 pressures to 2 000 bar at 500°C. An orthorombic Type (Ln = La to Nd) and a monoclinic type are observed. Both types are investigated by IR and X-ray methods.
    Notes: Die wasserfreien ternären Carbonate KLn(CO3)2 mit Ln = La bis Lu sowie Y werden unter CO2-Drücken bis 3000 bar bei 350°C aus KLn(CO3)2 · xH2O (Ln = La bis Nd) oder bei 500°C und 2000 bar aus K2CO3 und Ln2(C2O4)3 · xH2O (Ln = Sm bis Lu sowie Y) hergestellt. Es wird ein orthorhombischer Strukturtyp (Ln = La bis Nd) und ein monokliner Strukturtyp beobachtet. Beide Typen werden IR-spektroskopisch und röntgenographisch untersucht.
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    Masthead (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 484 (1982) 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19824840101
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    Zum Ablauf der Hydrothermalreaktion von CaO und Quarz in Suspension bei 190°C (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 77-90 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Course of the Reaction between CaO and Quartz under Hydrothermal Conditions in Suspensions at 190°CThe rate and the products formed intermediately of the reaction between CaO and quartz under hydrothermal conditions at 190°C depends on the grainsize resp. the surface area of the quartz and the CaO/SiO2 ratio. Using quartz with a surface area of 2 000 cm2/gr α-dicalciumsilicate monohydrate is formed primarily which is converted directly to Xonotlite in the further course of the reaction. On the other hand the use of quartz with a surface area of 12 000 cm2/gr leads at first to an amorphous calciumhydrogensilicat which gives 11 Å-Tobermorite in the second stage of the reaction which is converted at last to Xonotlite too. In the presence of calcium or magnesium carbonate the hydrothermal reaction between CaO and quartz shows the same dependence from the surface area of the quartz. But instead of Xonotlit Scawtite is formed as the stable finale product of this reaction in that case.
    Notes: Bei der Hydrothermalreaktion von CaO und Quarz bei 190°C werden Umsetzungsgeschwindigkeit und Art der entstehenden Zwischenprodukte durch die Korngröße bzw. die spez. Oberfläche des Quarzes und durch das CaO/SiO2-Verhältnis bestimmt. Bei Verwendung von Quarz mit einer spez. Oberfläche von 2 000 cm2/g wird zuerst α-Dicalciumsilicatmonohydrat gebildet, das im weiteren Verlauf der Reaktion direkt in Xonotlit übergeht. Die Verwendung von Quarz mit einer spez. Oberfläche von 12 000 cm2/g führt dagegen zunächst zu einem amorphen Calciumhydrogensilicat, das in einem zweiten Reaktionsschritt 11 Å-Tobermorit bildet, der schließlich auch in Xonotlit übergeht. In Gegenwart von Calcium- oder Magnesiumcarbonat zeigt die Hydrothermalreaktion von Quarz- und Kalk dieselben Abhängigkeiten von der spez. Oberfläche des Quarzes, jedoch wird in diesem Fall anstatt Xonotlit Scawtit als stabiles Endprodukt der Reaktion gebildet.
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    NMR-spektroskopische Untersuchungen an 15N-markierten Oxocyclophosphazanen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 121-128 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NMR Spectroscopic Studies of 15N Labelled OxocyclophosphazanesThe completely 15N labelled cyclophosphazanes (15NMeP(OMe)O)3, (15NEtP(OEt)O)3, and (15NMeP(OMe)O)4 were prepared by rearrangement of the corresponding alkoxyphosphazenes and their 31P- and 15N-NMR spectra were investigated. On the case of the trimer compounds spectra of the ABB′XX′Y spin type were obtained; all coupling constants are relevant, and like the 15N chemical shifts they are found only by means of spectra simulations. The relative signs of the coupling constants 1JPN, 2JPP, 2JNN, and 3JPN were also obtained.
    Notes: Die vollständig 15N-markierten Cyclophosphazane (15NMeP(OMe)O)3, (15NEtP(OEt)O)3 und (15NMeP(OMe)O)4 wurden aus den entsprechenden Alkoxyphosphazenen dargestellt und sowohl 31P- als auch 15N-NMR-spektroskopisch untersucht. Bei den trimeren Verbindungen wurden Spektren vom Spintyp ABB'XX'Y erhalten; alle Kopplungskonstanten sind relevant, sie können wie die 15N-chemischen Verschiebungen nur auf dem Wege der Spektrensimulation erhalten werden. Es ergeben sich auch die relativen Vorzeichen für die Kopplungskonstanten 1JPN, 2JPP, 2JNN und 3JPN.
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    Flüssig-Flüssig-Extraktion von Metallen mit vierzähligen Schiffschen Basen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 147-152 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Liquid-Liquid Extraction of Metals with Some Tetradentate Schiff BasesThe liquid-liquid extraction of copper(II), iron(III), nickel(II), cobalt(II), and zinc(II) with some tetradentate Schiff bases HO∩N∩N∩OH has been investigated. The extraction is strongly influenced by changing the size of the chelate ring. From slope analysis, the extracted species are found to be neutral complexes MII (O∩N∩N∩O) in the case of bivalent metal ions. Iron(III) forms chloride containing complexes in the organic phase. The complex behaviour of these Schiff bases in the solid state has been compared with the complex formation in solution.
    Notes: Es wird über die Flüssig-Flüssig-Extraktion von Kupfer(II), Eisen(III), Nickel(II), Cobalt(II) und Zink(II) mit vierzähligen Schiffschen Basen HO∩N∩N∩OH berichtet. Der Extraktionsvorgang hängt stark von der Gestalt der gebildeten tricyclischen Komplexe ab. Im Falle der zweiwertigen Metallionen werden, wie die Slope-Analyse zeigt, die Chelate MII (O∩N∩N∩O) extrahiert. Eisen(III) bildet in der organischen Phase chloridhaltige Komplexe. Die Komplexbildung der Schiffschen Basen in Lösung wird mit der im festen Zustand verglichen.
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    Synthesen und IR-Spektren von [Br4Re≡N—BBr3]⊖ und [ReNBr4]⊖. Die Kristallstruktur von AsPh4[ReNBr4] (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 175-181 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses and I.R. Spectra of [Br4Re≡N—BBr3]⊖ and [ReNBr4]⊖. Crystal Structure of AsPh4[ReNBr4]AsPh4[Br4Re≡N—BBr3] is obtained from AsPh4[ReNCl4] and excess boron tribromide, forming dark violet crystals, sensitive to moisture. Thermal cleavage at 210°C in vacuo yields red-orange AsPh4[ReNBr4]. According to the i.r. spectra the complex anions of both compounds contain ReN triple bonds; in [Br4Re≡N—BBr3]⊖ the sp-hybridised nitrogen is part of a linear bridge . The crystal structure of AsPh4[ReNBr4] was determined by aid of X-ray diffraction data (1 168 unique reflexions, R = 3.8%). The compound crystallises in the tetragonal space group P 4/n with two formula units per unit cell and the cell dimensions a = b = 1 290 pm and c = 795.4 pm. The anion [ReNBr4]⊖ has C4v symmetry with a bond angle NReBr of 103° and the ReN bond length (162 pm) corresponding to a triple bond.
    Notes: AsPh4[Br4Re≡N—BBr3] wird aus AsPh4[ReNCl4] und überschüssigem Bortribromid in Form tiefvioletter, feuchtigkeitsempfindlicher Kristalle hergestellt. Durch thermischen Abbau im Vakuum bei 210°C entsteht rotoranges AsPh4[ReNBr4]. Nach den IR-Spektren enthalten die komplexen Anionen beider Verbindungen ReN-Dreifachbindungen; bei [Br4Re≡N—BBr3]⊖ liegt eine gestreckte Brücke vor mit sp-hybridisiertem Stickstoff. Die Kristallstrukturbestimmung von AsPh4[ReNBr4] wurde mit Hilfe von Röntgenbeugungsexperimenten bestimmt (1 168 unabhängige Reflexe, R = 3,8%). Die Verbindung kristallisiert in der tetragonalen Raumgruppe P 4/n mit zwei Formeleinheiten pro Elementarzelle und den Gitterabmessungen a = b = 1 290 pm, c = 795,4 pm. Das Anion [ReNBr4]⊖ hat C4v-Symmetrie; die ReN-Bindungslänge entspricht mit 162 pm einer Dreifachbindung, der Bindungswinkel NReBr beträgt 103°.
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    Magnetische Ordnungsphänomene in den Clusterverbindungen Ti7Cl16 und Ti7Br16 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 64-76 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Magnetic Ordering Phenomena in the Cluster Compounds Ti7Cl16 and Ti7Br16The magnetic susceptibilities of Ti7Cl16 and Ti7Br16 have been measured between 3.8 and 295 K by the Faraday method. The compounds show magnetic ordering points at 15.9 and 13.5 K, respectively. The determination of the oxidation states of the titanium ions and the exchange interactions between them is complicated by the fact that at room temperature competing antiferro-magnetic intra- and intercluster exchange interactions are already present. Calculations with simple models agree with the assumption that the compounds consist of Ti3 clusters with TiII and isolated TiIV ions.
    Notes: Die magnetischen Suszeptibilitäten von Ti7Cl16 und Ti7Br16 sind mit Hilfe der Faraday-Methode zwischen 3,8 und 295 K bestimmt worden. Die Verbindungen zeigen magnetische Ordnungspunkte bei 15,9 bzw. 13,5 K. Komplikationen bei der Bestimmung der Oxidationsstufen der Titan-Ionen und der magnetischen Wechselwirkungen zwischen ihnen ergeben sich dadurch, daß bereits bei Raumtemperatur miteinander konkurrierende, überwiegend antiferromagnetische Intra- und Interclusterwechselwirkungen vorhanden sind. Modellrechnungen lassen darauf schließen, daß die Verbindungen entsprechend der Aufteilung “6 TiX2 · TiX4” aus Ti3-Clustern mit TiII- und isolierten TiIV-Ionen bestehen.
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    Beiträge zur Chemie des Phosphors. 115. Synthese und Eigenschaften des Tetraphospha-silaspiro-[2.2]pentans (PBut)2Si(PBut)2Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 27-33 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 115. Synthesis and Properties of the Tetraphospha-silaspiro[2.2] pentane (PBut)2Si(PBut)2The first spirocyclic phosphorus-silicon three-membered ring compound, 1,2,4,5-tetra-tert-butyl-1,2,4,5-tetraphospha-3-silaspiro[2.2]pentane, (PBut)2Si(PBut)2 (1), has been synthesized by cyclocondensation of K(But)P—P(But)K with silicon tetrachloride in the molar ratio of 2:0.9. It was characterized by elemental analysis, cryoscopic molecular weight determination and its mass, magnetic resonance and vibrational spectra. 1 is formed as a mixture of two diastereomers 1a and 1b. These differ in the relative arrangement of the trans-oriented organyl substituents at the two three-membered rings; both isomers could be obtained in a pure state. The sterically less favoured isomer 1b rearranges into the comparatively more stable isomer 1a.
    Notes: Die erste spirocyclische Phosphor-Silicium-Dreiringverbindung, das 1,2,4,5-Tetra-tert-butyl-1,2,4,5-tetraphospha-3-silaspiro[2.2]pentan, (PBut)2Si(PBut)2 (1), wurde durch Cyclokondensation von K(But)P—P(But)K mit Siliciumtetrachlorid im Molverhältnis 2:0,9 synthetisiert. Die Charakterisierung erfolgte durch Elementaranalyse, kryoskopische Molmasse-Bestimmung, Massen-, Kernresonanz- und Molekülschwingungsspektren. 1 entsteht als Gemisch von zwei Diastereomeren 1a und 1b, die sich in der Anordnung der jeweils trans-ständigen Organylgruppen beider Dreiringe zueinander unterscheiden; beide Isomere konnten rein erhalten werden. Das sterisch ungünstigere Isomer 1 b lagert sich in das vergleichsweise beständigere Isomer 1 a um.
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    Synthesis and structures of Sc7Cl12 and Zr6Cl15Dedicated to professor Rudolf Hoppe on his 60th birthday (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 51-59 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The indicated nine-electron clusters of scandium and zirconium are formed in transport reactions at 880/900°C and 750/600°C, respectively. Sc7Cl12 (R¯3, a - 12.959(2), c - 8.825(2), Z - 3) can be described as c.c.p. Sc6Cl12 clusters with isolated metal atoms in all octahedral interstices or as Sc3+(Sc6Cl6iCl6i-a) 3- with Sc3+ in Cli octahedra between Sc6Cl123- sheets. Metal-metal distances within the cluster are 3.201-3.230(2) Å. Zr6Cl12iCl6/3a crystallizes in the Ta6Cl15 structure (Ia3d, a - 21.141(3) Å, Z - 16) with d(Zr—Zr) = 3,199-3.214(4) Å. Apparent residual electron density is found in the center of both clusters, amounting to Z∼7.6 (Sc) and ∼6 (Zr) based of refinement of oxygen in these positions. The effect is thought to probably arise from errors in the diffraction data rather than partial incorporation of light nonmetal atoms such as oxygen or fluorine. Observed metal-metal distances are compared with those in other clusters.
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    Recent developments in the field of high oxidation states of transition elements in oxides stabilization of Six-coordinated Iron(V)Dedicated to Professor Rudolf Hoppe on his 60th birthday (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 60-66 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neue Entwicklungen auf dem Gebiet der hohen Oxydationsstufen der Übergangsmetalle in Oxiden. Stabilisierung des sechsfach-koordinierten Eisen(V)Eine Bestimmung der physikalischen Eigenschaften von Eisen, Cobalt, Nickel und Kupfer hoher Oxydationsstufen in Oxiden zeigt den Einfluß der chemischen Bindung und struktureller Faktoren auf die elektronische Konfiguration. Diese Zusammenhänge werden gezeigt bei der Synthese des ersten sechsfach-koordinierten Eisen(V)-oxids: La2LiFeO6.
    Notes: An evaluation of the physical properties of iron, cobalt, nickel, and copper high oxidation states in oxides shows the influence of chemical bonding and structural factors on the electronic configuration. Such correlations are illustrated by the synthesis of the first six-coordinated iron(V) oxide: La2LiFeO6.
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    Thermisch stimulierte Lumineszenzerscheinungen. I Einfluß der Vorbehandlung von Kupferstaub und das Phänomen „Kontaktgedächtnis“Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 95-100 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thermally Stimulated Luminescence Phenomena. I. Influence of Pretreatment of Copper Dust and the Phenomenon “Contact Memory”The thermally stimulated luminescence of so-called “copper dust” is strongly influenced by its pretreatment. Samples which have been cooled prior to measurement show lower energies and those which have been mechanically treated, irradiated or heated, show higher thermoluminescence energies than samples which have been stored normally. After removal of the samples from the metallic carrier and subsequent heating of the latter, the thermoluminescence energies are proportional to those found for the sample measured immediately before. This phenomenon is considered as “contact memory”. All results are interpreted according to the concept of the hierarchic order.
    Notes: Die thermisch stimulierte Lumineszenz von sogenanntem “Kupferstaub” hängt von der Art der Vorbehandlung ab. Vorher gekühlt gewesene Proben zeigen geringere, verriebene, bestrahlte oder geglühte Proben höhere Werte als normal gelagerte. Nach Entfernung der Untersuchungssubstanz vom Probenträger wird beim Erwärmen abermals Thermolumineszenz beobachtet. Die dabei gemessene Energie ist derjenigen proportional, welche von der vorher aufgebracht gewesenen Untersuchungssubstanz gemessen wurde. Diese Erscheinung wird als “Kontaktgedächtnis” bezeichnet. Alle Beobachtungen werden unter Zuhilfenahme des hierarchischen Ordnungskonzeptes interpretiert.
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    Die Reaktion von Osmiumpentachlorid mit Trichloracetonitril Die Kristallstruktur von PPh4[Cl5Os(NC(CCl3)NCCl(CCl3))] · CH2Cl2 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 159-170 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Osmium Pentachloride with Trichloro Acetonitrile. Crystal Structure of PPh4[Cl5Os(NC(CCl3)NCCl(CCl3))] · CH2Cl2.Osmium pentachloride reacts with excess trichloro acetonitrile in the presence of chlorine, forming Cl4OsVI(NC(CCl3)NCCl(CCl3))2 (= Cl4OsL2), an orange-red powder. According to the i.r. spectrum, the ligands L are coordinated to the osmium in trans-position. In the reaction with PPh4Cl, one of the ligands L is exchanged against chloride; the free ligand dissociates into two moles trichloro acetonitrile and half a mole chlorine. Excess boron tribromide turns Cl4OsL2 into Br4Os(NC(CCl3)NCBr(CCl3))2, which has a violet colour.A crystal structure determination of PPh4[Cl5OsV(NC(CCl3)NCCl(CCl3))] · CH2Cl2, which crystallizes triclinic in the space group P1 with two formula units per unit cell, was carried out with the aid of X-ray diffraction data (R = 0.091; 4 285 independent reflexions). The structure consists of tetraphenylphosphonium cations and anions [OsCl5L]⊖, in which the osmium atom is coordinated in a distorted octahedron by five CI ligands and one N atom of the ligand L. The Os—N bond length (197 pm) is slightly shorter than the expectation value of a 0s-N single bond; however there is a significant difference between the Os—CI bond lengths of the trans-positioned C1 atom (2.28 pm) and the equatorial C1 atoms (233 pm). The ligand Le is a product of dimerisation of two molecules of trichloro acetonitrile and the addition of one chloride ion. The frame atoms NCNCC form two planes almost perpendicular to each other, so that there is no overall resonance.
    Notes: Osmiumpentachlorid reagiert mit überschüssigem Trichloracetonitril bei Anwesenheit von Chlor unter Bildung von Cl4OsVI(NC(CCl3)NCCl(CCl3))2 (=Cl4OsL2), einem orangeroten, kristallinen Pulver. Nach dem IR-Spektrum sind die Liganden L in trans-Position zueinander am Osmium orientiert. Durch Umsetzung mit PPh4Cl wird einer der Liganden L gegen Chlorid ausgetauscht; der freie Ligand L zerfällt dabei in zwei Mol Trichloracetonitril und ein halbes Mol Chlor. Mit überschüssigem Bortribromid läßt sich Cl4OsL2 in violettes Br4Os(NC(CCl3)NCBr(CCl3))2 überführen. Die IR-Spektren werden mitgeteilt.Nach der Kristallstrukturbestimmung mit Hilfe von Röntgenbeugungsdaten kristallisiert PPh4[Cl5OsV(NC(CCl3)NCCl(CCl3))] · CH2Cl2 triklin in der Raumgruppe P1 mit zwei Formeleinheiten pro Elementarzelle (R = 0,091; 4 285 unabhängige Reflexe). Die Struktur besteht aus Tetraphenylphosphoniumkationen und Anionen [OsCl5L]⊖, in denen das Osmiumatom verzerrt oktaedrisch von fünf Cl-Liganden und einem N-Atom des Liganden L umgeben ist. Die Os—N-Bindungslänge ist mit 197 pm etwas kürzer als der Erwartungswert für eine Einfachbindung; dennoch ist die Os—Cl-Bindungslänge des hierzu trans koordinierten Cl-Atoms mit 228 pm merklich kürzer als die Os—Cl-Abstände der äquatorialen Cl-Atome (233 pm). Die Ligandengruppe L⊖ folgt aus der Dimerisierung zweier Moleküle Trichloracetonitril und der Anlagerung eines Chloridions. Die Gerüstatome NCNCC bilden zwei zueinander nahezu senkrecht stehende Ebenen aus, so daß keine durchgehende Konjugation besteht.
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    Die Ammonolyse von Halogenokomplexen des vierwertigen Platins (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 205-214 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ammonolysis of Halogeno Complexes of Tetravalent PlatinumReactions of liquid ammonia and ammonium hexahalogenoplatinates(IV) at -40°C yield mixtures of halogenoammine complexes [Pt(NH3)6-nXn]X4-n (X = Cl, Br, I; n = 3, 2, 1, 0). Hexaammine platinum(IV) salts, [Pt(NH3)6]X4, may be isolated as main product only after several weeks of reaction. Interactions at room temperature of liquid ammonia and hexachloro or hexabromo complexes produce quantitatively the novel dinuclear di-m̈-amido-bis[tetraammineplatinum(IV)] complex, [(H3N)4Pt(NH2)2Pt(NH3)4]X6.By interaction of gaseous or liquid ammonia and subsequent addition of potassium amide solution in excess potassium hexaamido platinate(IV), K2[Pt(NH2)6], is formed in good yield.
    Notes: Ammoniumhexahalogenoplatinate(IV), (NH4)2[PtX6], bilden mit flüssigem Ammoniak bei -40°C Gemische von Halogenoamminkomplexen [Pt(NH3)6-nXn]X4-x (X = Cl, Br, I; n = 3, 2, 1, 0) und nur nach einigen Wochen Reaktionszeit als Hauptprodukt den Hexamminplatin(IV)-Komplex, [Pt(NH3)6]X4. Die Einwirkung des flüssigen Ammoniaks bei Raumtemperatur auf Hexachloro- und Hexabromoplatinat führt zur quantitativen Bildung des bisher nicht beschriebenen zweikernigen Di-m̈-amido-bis[tetramminplatin(IV)]-Komplexes, [(H3N)4Pt(NH2)2Pt(NH3)4]X6.Läßt man auf die Halogenoplatinate zuerst Ammoniak, danach Kaliumamidlösung im Überschuß einwirken, erhält man in guter Ausbeute Kaliumhexaamidoplatinat, K2[Pt(NH2)6].
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    Synthese und Charakterisierung von Hydroxyalkinpalladium(0)-Verbindungen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 141-146 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Characterization of Hydroxyacetylenepalladium(0) CompoundsComplexes of the general type L2Pd(acetylene) have been synthesized by reactions of L2PdCH2=CH2, Pd(dba)2/L, and PdL4 with selected symmetrical hydroxyacetylenes. The new compounds are investigated by several chemical reactions and their physical characteristics are assigned.
    Notes: Durch Umsetzung von L2PdCH2=CH2, Pd(dba)2/L und PdL4 mit ausgewählten symmetrischen Hydroxyalkinen wurden Verbindungen des allgemeinen Typs L2Pd(alkin) dargestellt [L = P(C6H5)3, P(C6H11)3]Verwendete Abkürzungen: THF = Tetrahydrofuran, dba = Dibenzylidenaceton, L = Phosphinligand, ac = Acetat, M = Metall. Einige chemische Reaktionen sowie physikalische Eigenschaften dieser neuen Komplexe werden mitgeteilt.
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    Masthead (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 488 (1982) 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19824880101
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    Darstellung, Eigenschaften und Kristallstruktur von Cu2P7 und Strukturverfeinerungen von CuP2 und AgP2Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 225-236 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Properties, and Crystal Structure of Cu2P7 and Structure Refinements of CuP2 and AgP2Cu2P7, synthesized by direct reaction of the elemental components, is a diamagnetic semiconductor and has monoclinic symmetry: C2/m, a = 12.658(2), b = 7.256(1), c = 14.630(2) Å, β = 107.46(1)°, Z = 8. The structure was refined from diffractometer data to a R value of 0.056 (59 variables, 2306 F values). All Cu atoms are approximately tetrahedrally coordinated to P atoms and have the formal oxidation number +1. The P atoms form two-dimensionally infinite nets similar to those in Ag3P11. The crystal structures of CuP2 and AgP2 were refined from diffractometer data: R = 0.036 (1 513 F values) and R = 0.040 (1 425 F values) respectively for 19 variable parameters each.
    Notes: Cu2P7, durch direkte Reaktion der Elemente synthetisiert, ist ein diamagnetischer Halbleiter und kristallisiert monoklin: C2/m, a = 12,658(2), b = 7,256(1), c = 14,630(2) Å, β = 107,46(1)°, Z = 8. Die Struktur wurde aus Diffraktometerdaten zu einem R-Wert von 0,056 (59 Variable, 2306 F-Werte) verfeinert. Alle Cu-Atome sind etwa tetraedrisch von P-Atomen umgeben und haben die formale Oxidationszahl +1. Die P-Atome bilden zweidimensional-unendlich ausgedehnte Netze, ähnlich wie in Ag3P11. Die Kristallstrukturen von CuP2 und AgP2 wurden aus Diffraktometerdaten verfeinert: R = 0,036 (1 513 F-Werte) bzw. 0,040 (1 425 F-Werte) für je 19 variable Parameter.
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    Die Strukturen von LiAlCl4 und NaAlCl4 als Funktion der TemperaturProfessor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 259-265 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structures of LiAlCl4 and NaAlCl4 as a Function of TemperatureThe crystal structures of LiAlCl4 (space group P21/c) and of NaAlCl4 (space group P212121) have been investigated as a function of temperature. The single crystal intensities of the Bragg reflections have been measured for LiAlCl4 at 293, 326, and 364 K and for NaAlCl4 at 293, 353, and 393 K. The interatomic distances of the AlCl4 tetrahedra stay constant, the Li—Cl and Na—Cl distances increase by 0.025 Å/100 K. The occupation probabilities of the Li and Na positions do not change. The directions of the largest thermal vibrational amplitudes of the Li and Na atoms (approximately 0.30 Å at 293 K) point to faces of their coordination polyhedra.
    Notes: Die Kristallstrukturen von LiAlCl4 (Raumgruppe P21/c) und von NaAlCl4 (Raumgruppe P212121) wurden als Funktion der Temperatur untersucht. Die Intensitäten der Bragg-Reflexe wurden mit Einkristallen auf einem Vierkreisdiffraktometer gemessen und zwar für LiAlCl4 bei 293, 326 und 364 K und für NaAlCl4 bei 293, 353 und 393 K. Die Abstände in den AlCl4-Tetraedern bleiben nahezu konstant, die Li—Cl- und Na—Cl-Abstände vergrößern sich im Mittel um 0,025 Å/100 K. Eine Veränderung der Besetzungswahrscheinlichkeiten der Li- oder Na-Positionen wurde nicht beobachtet. Die Richtungen der größten Schwingungsamplitude der Li- und Na-Atome (etwa 0,30 Å bei 293 K) weisen auf Flächen ihrer Koordinationspolyeder.
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    Darstellung und Kristallstruktur von ZrP2S6 und ThP2S6Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 295-300 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal Structure of ZrP2S6 and ThP2S6The compounds ZrP2S6 (I) and ThP2S6 (II) are synthesized from the elements at 750-800°C. They are isotypic (P42/m, Z = 2; I: a = 668.2, c = 948.9 pm; II: a = 688.0, c = 990.3 pm) and to be described as M4+(P2S6)4-. The thiohypodiphosphate anion has ideal staggered conformation. The cation is coordinated by a (slightly deformed) 42m dodecahedron of S atoms. The geometrical details correspond to the most favourable ligand distribution.
    Notes: Die Verbindungen ZrP2S6 (1) und ThP2S6 (II) werden aus den Elementen bei 750-800°C in Einkristallen erhalten. Sie sind isotyp (P42/m, Z = 2; I: a = 668,2, c = 948,9 pm; II: a = 688,0, c = 990,3 pm) und als M4+(P2S6)4- zu formulieren. Das Thiohypodiphosphatanion besitzt ideal gestaffelte Konformation; das Koordinationspolyeder aus S-Atomen um das Kation ist (nahezu) ein 42m Dodekaeder, dessen geometrische Details der elektrostatisch günstigsten Liganden-anordnung in engen Grenzen entsprechen.
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    Masthead (1982)
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    Zeitschrift für anorganische Chemie 492 (1982) 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19824920101
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    Darstellung und Kristalldaten von [(C6H5)4As]2M(NO3)5 (M = Pr, Nd, Sm, Eu)Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 319-322 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal Data of [(C6H5)4As]2M(NO3)5 (M = Pr, Nd, Sm, Eu)The compounds [(C6H5)4As]2M(NO3)5 (M = Pr, Nd, Sm, Eu) have been prepared and investigated by X-ray techniques. It has been found that they are isotypic with each other. The determination of the lattice constants was based upon the known structural data of the europium complex. As expected a decrease of the molar volume with increasing atomic number of the rare-earth ion is observed.
    Notes: Die Verbindungen [(C6H5)4As]2M(NO3)5 (M = Pr, Nd, Sm, Eu) wurden dargestellt und röntgenographisch untersucht. Dabei wurde gefunden, daß sie isotyp miteinander sind. Der Bestimmung der Gitterkonstanten wurden die bekannten Strukturdaten des Europiumkomplexes zugrunde gelegt. Wie erwartet, wird eine Abnahme des molaren Volumens mit steigender Ordnungszahl des Seltenen Erdions beobachtet.
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    Trimethylsilylverbindungen der Vb-Elemente. IV. Synthese und Struktur des Lithium-bis(trimethylsilyl)-antimonids · DME (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 492 (1982), S. 15-27 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trimethylsilyl Derivatives of Vb-Elements. IV. Synthesis and Structure of Lithium Bis(trimethylsilyl)antimonide · DMETris(trimethylsilyl)stibine and methyllithium react in 1,2-dimethoxyethane (DME) to give tetramethylsilane and lithium bis(trimethylsilyl)antimonide · DME 1. The latter compound 1 crystallizes tetragonal in the acentric space group I42d; the unit cell dimensions determined at the temperature of data collection (-85°C) are: a = 1004.95(2); c = 3714.70(1) pm; Z = 8. The crystal structure determination (R = 0.030) shows the presence of screw-shaped macromolecules. The chains are built up by bis(trimethylsilyl)stibino groups and DME-coordinated lithium atoms in alternating sequence. They might be characterized by a Dornberger-Schiff symbol such as P(2)21(2) and are stacked according to rules derived by O'Keeffe and Andersson. Antimony and lithium atoms are nearly tetrahedrally surrounded. Characteristic bond distances and angles are: Sb—Si 253.2(1); Sb—Li 293.3(4); O—Li 201.1(8) pm as well as Si—Sb—Si 94.2(1); Sb—Li—Sb 130.7(3); Li—Sb—Li 144.6(4)°.
    Notes: Tris(trimethylsilyl)stiban reagiert mit Methyllithium in 1,2-Dimethoxyäthan (DME) zu Lithium-bis(trimethylsilyl)antimonid · DME 1 und Tetramethylsilan. Das Antimonid 1 kristallisiert tetragonal in der azentrischen Raumgruppe I42d mit den bei der Meßtemperatur von -85°C bestimmten Abmessungen der Elementarzelle: a = 1004,95(2); c = 3714,70(1) pm; Z = 8. Nach den Ergebnissen einer Röntgenstrukturanalyse (R = 0,030) liegen Makromoleküle in Form geschraubter Ketten vor, die sich aus Bis(trimethylsilyl)stibano-Resten und DME-komplexierten Lithiumatomen in alternierender Reihenfolge aufbauen. Sie können durch ein Dornberger-Schiff-Symbol wie P(2)21(2) charakterisiert werden und stapeln sich nach den von O'Keeffe und Andersson abgeleiteten Regeln. Die Antimon- und Lithiumatome sind verzerrt tetraedrisch koordiniert. Charakteristische Bindungslängen und -winkel sind: Sb—Si 253,2(1); Sb—Li 293,3(4); O—Li 201,1(8) pm sowie Si—Sb—Si 94,2(1); Sb—Li—Sb 130,7(3); Li—Sb—Li 144,6(4)°.
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    Zur Kenntnis von Ba2WO3F4 und weiterer Oxidfluoride mit Wolfram und Molybdän (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 492 (1982), S. 63-68 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ba2W03F4 and Other Oxidefluorides of Tungsten and MolybdenumNew oxidefluorides are obtained in form of colourless powders by heating appropriate mixtures of the binary constituents: Ba2WO3F4 (a = 11.51 b = 9.38 c = 7.19 Å, β = 126.2° Z = 4, monoclinic, new type of structure) and the isotypic Ba2MoO3F4 (a = 11.46 b = 9.36 c = 7.24 Å, β = 126.3°, Z = 4) as well as PbWO3F2 (a = 20.86 c = 14.75 Å, Z = 64, tetragonal, isotypic with SrAlF5) and Pb3W2O6F6 (a = 20.65 c = 14.77 Å, tetragonal, Z = 24, isotypic with Sr3Fe2F12).
    Notes: Neu dargestellt wurde Ba2WO3F4, nach Pulverdaten monoklin mit a = 11,51, b = 9,38 und c = 7,19 Å, β = 126,2°, Z = 4, eigener Typ, damit isotyp Ba2MoO3F4, a = 11,46, b = 9,36 und c = 7,24 Å, β = 126,3 (Pulverdaten) sowie PbWO3F2 (isotyp mit tetragonalem SrAlF5: a = 20,86, c = 14,75 Å, Z = 64, Pulverdaten) und Pb3W2O6F6, tetragonal, isotyp mit Sr3Fe2F12 (a = 20,65, c = 14,77 Å, Z = 24), jeweils aus den binären Komponenten. Alle neuen Oxidfluoride sehen farblos aus.
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    Über Fluoride des Typs Ba2M″M‴F9 Zur Kenntnis von Ba2ZnAlF9 und Ba2ZnGaF9 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 492 (1982), S. 83-94 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fluorides of the Type Ba2M″M‴F9. On Ba2ZnAlF9 and Ba2ZnGaF9For the first time single crystals (colourless) of Ba2ZnAlF9 and Ba2ZnGaF9 crystallizes orthorhombic with a = 17.841(1), b = 5.5416(4), c = 7.3616(4) Å, Z = 4, Pnma [4-circle diffractometer PW 1100, MoKα, 1282 I0 (hkl)], for parameters see text. The refinement with anisotropic temperature factores led to RW = 0.049. Characteristic structural features are octahedral groups [ZnF6] and [AlF6] (statistical distribution of Zn2+ and Al3+) connected to double chains. Four octahedra of [ZnF6] and [AlF6] respectively form a „ring“ these rings are linked to form stairs.Similar (Weissenberg und Precession data) Ba2ZnGaF9 crystallizes, but the unit cell is slightly monoclinic distorted (a = 7.4266(5), b = 17.884)(2), c = 5.6178(5) Å, β = 90.34(1)°, Z = 4).
    Notes: Neu dargestellt wurden in Goldbomben (750°C, 30 d) farblose Einkristalle von Ba2ZnAlF9 und Ba2ZnGaF9. Ba2ZnAlF9 kristallisiert orthorhombisch mit a = 17,841(1), b = 5,5416(4), c = 7,3616(4) Å, Z = 4, Pnma [4-Kreisdiffraktometer PW 1100, MoKα, 1282 I0(hkl), RW = 0,049, anisotrope Temperaturfaktoren] Parameter siehe Text. Charakteristisches Strukturmerkmal sind Oktaedergruppen [ZnF6] bzw. [AlF6] (statistische Verteilung von Zn2+ und Al3+), die, zu Doppelketten verbunden, Treppen aus „Viererringen“ bilden.Ba2ZnGaF9 kristallisiert (nach Weißenberg- und Präzessionsaufnahmen) praktisch gleich, jedoch ist die Elementarzelle monoklin verzerrt (a = 7,4266(5), b = 17,884(2), c = 5,6178(5) Å, β = 90,34(1)°, Z = 4.
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    Chemie polyfunktioneller Liganden. 71. Darstellung und spektroskopische Charakterisierung von drei Bis(diphenylmethylphosphin)iminium-Salzen, sowie spektroskopischer Vergleich mit dem isomeren [(Diphenylphosphin-N-methyl-amino)diphenyl-methyl-phosphonium]-iodid (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 492 (1982), S. 122-134 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Polyfunctional Ligands. 71. Preparation and Spectroscopic Characterization of Three Bis(diphenylmethylphosphine)iminium Salts, as well as a Spectroscopic Comparison with the Isomeric [(Diphenylphosphine-N-methylamino)-diphenyl-methyl-phosphonium]-iodideLithium-bis(diphenylphosphino)amid reacts with CH3I to give Bis(diphenylmethylphosphine)iminium-iodide. I- can be substituted by PF6- and B(C6H5)4-. The isomeric [(Diphenylphosphine-N-methyl-amine)-diphenyl-methyl-phosphonium]iodide has been synthesized by literature methods. All the compounds where characterized using IR, Raman, 1H and 31P NMR spectroscopy.
    Notes: Lithium-bis(diphenylphosphino)amid reagiert mit CH3I zum Bis(diphenylmethylphosphin)iminium-iodid. Das Iodid-Anion kann durch PF6- und B(C6H5)4- ausgetauscht werden. Das isomere [(Diphenylphosphin-N-methyl-amin)-diphenyl-methyl-phosphonium]iodid wurde entsprechend der Literatur dargestellt. Alle Verbindungen wurden durch IR-, Raman-, 1H- und 31P - NMR-Spektroskopie charakterisiert.
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    Beiträge zum 121Sb-Mößbauer-Effekt. VI. 121Sb-Mößbauer-Spektrum und Schwingungsspektrum von Sb2O5 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 120-126 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the 121Sb-Mössbauer Effect. VI. 121Sb-Mössbauer Spectrum and Vibrational Spectrum of Sb2O5The results of 121Sb-Mössbauer spectroscopy at 4.2 K on pure Sb2O5, obtained by hydrothermal synthesis, are reported. The vibrational spectrum (i.r., raman) is correlated with the expectations of factor group analysis. The findings are compared to measurements carried out on samples hitherto regarded as Sb2O5.
    Notes: Die Ergebnisse des 121Sb-Mößbauer-Effekts bei 4,2 K an reinem Sb2O5, das durch Hydrothermalsynthese erhalten wurde, werden mitgeteilt. Das Schwingungsspektrum (IR, Raman) wird zu den Erwartungen der Faktorgruppenanalyse in Beziehung gebracht. Die Befunde werden mit Messungen verglichen, die von Präparaten stammen, die man bisher als Sb2O5 angesehen hat.
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    Molybdännitridtrichlorid-di-n-butylether, [MoNCl3 · O(C4H9)2]4; Darstellung, IR-Spektrum und Kristallstruktur (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 127-134 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Molybdenum-nitride-trichloride-di-n -butylether [MoNCls3 · 0 (C4H9)2]4; Preparation, I.R. Spectrum, and Crystal StructurePhenyldiazonium tetrachloronitridomolybdate, C6H5N2[MoNCl4], was obtained in the form of orange-red crystals from phenyldiazonium chloride and molybdenum nitride chloride in POCl3 suspension. In boiling di-n-butylether it decomposes to chlorobenzene and the title compound which is obtained in the form of dark red crystals, sensitive to moisture. [MoNCl3 · O(C4H9)2]4 can also be obtained directly from MoNCl3 and dibutylether. It crystallizes in the monoclinic space group P21/c with two tetrameric molecules per unit cell. The lattice constants are at -49°C a = 1 283, b = 1 170, c = 1 922 and β = 94.11°. The crystal structure was determined with the aid of X-ray diffraction data and was refined to a residual index of R = 0.047 for 1951 observed reflexions. In the [MoNCl3 · O(C4H9)2]4 molecule the Mo atoms form a square; they are linked with one another via the N atoms with alternating Mo—N distances of 165 and 215 pm, which indicate triple and single bonds, respectively. In the position trans to the shorter Mo≡N bond, the ether molecule is bonded by its oxygen atom. The I.R. spectra of C6H5N2[MoNCl4], C6H5N2[MoCl6], and [MoNCl3 · O(C4H9)2]4 are recorded.
    Notes: Phenyldiazonium-tetrachloronitridomolybdat, C6H5N2[MoNCl4] wird aus Phenyldiazoniumchlorid und Molybdännitridchlorid in POCl3-Suspension in Form orangeroter Kristalle hergestellt. In siedendem Di-n-butylether entsteht daraus unter Abspaltung von Chlorbenzol die Titelverbindung in Gestalt von dunkelroten, feuchtigkeitsempfindlichen Kristallen. [MoNCl3 · O(C4H9)2]4 kann auch direkt aus MoNCl3 und Dibutylether erhalten werden. [MoNCl3 · O(C4H9)2]4 kristallisiert monoklin in der Raumgruppe P21/c mit zwei tetrameren Molekülen pro Elementarzelle. Die Gitterkonstanten sind bei -49°C: a = 1 283, b = 1 170, c = 1 922 pm und β = 94,11°. Die Kristallstruktur wurde mit Hilfe von Röntgenbeugungsdaten aufgeklärt und bis zu einem Übereinstimmungsindex von R = 4,7% für 1951 beobachtete Reflexe verfeinert. Im [MoNCl3 · O(C4H9)2]4-Molekül bilden die Mo-Atome ein Quadrat; sie sind Über die N-Atome in fast gestreckter Anordnung, aber mit ungleichen Mo-N-Abständen miteinander verbunden; die Mo-N-Abstände von abwechselnd 165 und 215 pm sind als Dreifach- bzw. Einfachbindung anzusehen. Trans-ständig zur kurzen Mo≡N-Bindung ist jeweils der Ether Über sein O-Atom an das Molybdän gebunden. Die IR-Spektren von C6H5N2[MoNCl4] und von [MoNCl3 · O(C4H9)2]4 werden mitgeteilt und durch das IR-Spektrum von C6H5N2[MoCl6] ergänzt.
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    Über die Bildung von Oxidchloriden des Germaniums bei der GeCl4-Oxydation in homogener Gasphase (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 157-164 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About the Formation of Oxidechlorides of Germanium at the Oxidation of GeCl4 in Homogeneous Gas PhaseAt the reaction in the gaseous system GeCl4/O2 at 1223 K and 3.8 × 10-3 mol × I-1 GeCl4 the formation of Ge2OCl6 up to 1% was found beside GeO2. In the infrared spectrum it shows an characteristic absorption band at 743 cm-1. The determination of the molecular weight and experiments of chemical transport in the system GeO2/GeCl4 exclude the simultaneous formation of GeOCl2. Ge2OCl6 is not formed above 1273 K, an important result for the formation of defect free and high pure SiO2/GeO2 glasses by the oxidation of the halides at the so called MCVD (Modified Chemical Vapour Deposition) process.
    Notes: Bei der Gasphasenreaktion im System GeCl4/O2 wurde bei 1223 K und 3,8 · 10-3 mol · l-1 GeCl4 neben GeO2 die Bildung von etwa 1% Ge2OCl6 festgestellt und in dessen Infrarotspektrum eine bisher noch nicht beschriebene Bande des Germaniumoxidchlorids bei 743 cm-1 beobachtet. Durch Molekulargewichtsbestimmung und chemische Transportexperimente im System GeO2/GeCl4 wird die gleichzeitige Bildung von GeOCl2 ausgeschlossen. Die Bildung von Ge2OCl6 endet bei Temperaturen oberhalb 1273 K, was für die Bildung defektfreier und hochreiner SiO2/GeO2-Gläser durch Oxidation der entsprechenden Halogenide beim sog. MCVD-Prozeß von Bedeutung ist.
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    d, h-μ-Hydrogensulfato-e-μ-hydroxo-f-μ-oxo-bis[trichloroantimon(V)] (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 165-176 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: d, h-μ-Hydrogensulfato-e-μ-hydroxo-f-μ-oxo-bis[trichloroantimony(V)]The title compound I can be prepared by reaction of SbCl5 · H2O and H2SO4. By specified reaction conditions the compounds I · 1.5 H2O and I · 2 H2O can be isolated. Their crystal and molecular structure was determined by X-ray analysis. The vibrational spectra of I are assigned and discussed.
    Notes: Die Titelverbindung I läßt sich darstellen aus SbCl5 · H2O und H2SO4. Unter bestimmten Reaktionsbedingungen wurden Kristalle der Zusammensetzung I · 1,5 H2O und I · 2 H2O erhalten, deren Kristall- und Molekülstrukturen mittels Röntgenstrahlen ermittelt wurden. Die Schwingungsspektren von I werden zugeordnet und diskutiert.
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    d, h-μ-Methylsulfato-e-μ-methoxo-f-μ-oxo-bis[trichloroantimon(V)]. Struktur und Spektren (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 177-185 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: d, h-μ-Methylsulfato-e-μ-methoxo-f-μ-oxo-bis[trichloroantimony(V)]. Structure and SpectraAntimony(V) chloride reacts with methanol and sulfuric acid to the title compound I. I is obtained by reaction of tetrachloroantimony(V) methoxide and sulfuric acid or by reaction of bis[tetrachloroantimony(V)] sulphate and methanol. The crystal and molecular structure of I was determined by X-ray methods. The vibrational spectra are shortly discussed.
    Notes: Antimon(V)-chlorid reagiert mit Methanol und Schwefelsäure unter Bildung der Titelverbindung I. I entsteht auch durch Umsetzung von dimerem Tetrachloroantimon(V)-methoxid mit Schwefelsäure oder aus Bis[tetrachloroantimon(V)]-sulfat und Methanol. Die Kristall- und Molekülstruktur von I wurde durch Röntgenbeugung ermittelt. Die Schwingungsspektren werden kurz diskutiert.
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    Über geordnete Perowskite mit Kationenfehlstellen. XI. Das System Ba2Gd2/3□1/3U1-xWxO6 (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 219-231 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Ordered Perovskites with Cationic Vacancies. XI. System Ba2Gd2/3□1/3U1-xWxO6The cation deficient polymorphic perovskites Ba2Gd2/3□1/3UO6 and Ba2Gd2/3□1/3WO6 form a continuous series of mixed crystals, which crystallize over a wide range (x = 0.1 up to 0.99) in a cubic 1:1 ordered perovskite lattice. According to the investigations of the vibrational spectra, the diffuse reflectance spectra, and the photoluminescence  -  opposite to isostructural perovskites without vacancies  -  different species of UO6 and WO6 octahedra are present. Numerous differences in properties  -  e. g. an orange emission colour in comparison with a green one by absence of vacancies  -  are based upon that.
    Notes: Die beiden fehlstellenhaltigen, polymorphen Perowskite Ba2Gd2/3□1/3UO6 und Ba2Gd2/3□1/3WO6 bilden eine lückenlose Reihe von Mischkristallen, die in einem weiten Bereich (x = 0,1 bis 0,99) in einem kubischen 1:1 geordneten Perowskitgitter kristallisieren. Wie die Untersuchung der Schwingungsspektren, der diffusen Reflexionsspektren und der Photolumineszenz zeigen, liegen  -  im Gegensatz zu isostrukturellen fehlstellenfreien Perowskiten  -  mehrere Sorten an UO6- und WO6-Oktaedern vor. Hierauf sind zahlreiche Eigenschaftsunterschiede  -  z. B. eine orangefarbene Emission im Unterschied zu einer grünen bei Abwesenheit von Fehlstellen  -  zurückzuführen.
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    Struktur und katalytische Eigenschaften von Molybdänoxid-Trägerkatalysatoren bei einigen Oxydationsreaktionen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 493 (1982), S. 149-157 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Catalytic Properties of Molybdenum Oxide Supported Catalysts in Some Oxidation ReactionsMolybdenum supported catalysts were prepared by using different precursor compounds such as Mo(π-C3H5)4, [Mo(OC2H5)5]2, MoCl5, (NH4)6Mo7O24, and their catalytic behaviour in some oxidation reactions was studied. During the preparation process, as a result of interaction between the molybdenum compound used and the support, different surface compounds with strongly differing catalytic properties have been formed. MoO3 and supported catalysts with MoO3 crystallites on the surface, catalyse the H2 oxidation at temperatures above 400°C and the CO oxidation at temperatures of about 500°C. The reaction proceeds according to a redox mechanism. On surface compounds of molybdenum which exist on the surface if organic complexes are used as precursors, the catalytic H2 oxidation occurs even at 100°C with a high reaction rate. The catalytic CO oxidation on these catalysts occurs at temperatures of about 300°C. An associative mechanism on coordinative unsaturated MoVI sites is discussed.
    Notes: Molybdänhaltige Trägerkatalysatoren wurden unter Verwendung verschiedener Ausgangsverbindungen, wie Mo(π-C3H5)4, [Mo(OC2H5)5]2, MoCl5, (NH4)6Mo7O24 hergestellt und ihre katalytischen Eigenschaften für einige Oxydationsreaktionen untersucht.Im Herstellungsprozeß bilden sich durch Wechselwirkung der verwendeten Molybdänverbindung mit dem Träger Oberflächenverbindungen mit sehr unterschiedlichen katalytischen Eigenschaften. MoO3 und vorwiegend MoO3-Kristallite an der Oberfläche enthaltende Trägerkatalysatoren oxidieren H2 bei Temperaturen oberhalb 400°C und CO bei Temperaturen um 500°C. Die Reaktion erfolgt nach einem Redox-Stadien-Mechanismus. An Oberflächenverbindungen des Molybdäns, die bei der Reaktion organischer Molybdänkomplexe mit Oberflächenhydroxylgruppen oxidischer anorganischer Träger gebildet werden, verläuft die katalytische H2-Oxydation schon bei 100°C mit hoher Geschwindigkeit, und auch die katalytische CO-Oxydation erfolgt bei Temperaturen um 300°C. Für diese Katalysatoren wird ein assoziativer Mechanismus an koordinativ ungesättigten MoVI-Zentren diskutiert.
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    Electronic Resource
    Beiträge zur Chemie von Phosphorverbindungen mit Adamantanstruktur. VII[1]. Über Darstellung und Eigenschaften von Nonathio-cyclotriphosphatErweiterte und durch neuere Untersuchungen ergänzte Fassung eines Vortrages auf dem “2nd Symposium on Inorganic Phosphorus Compounds”, Prag 1974. (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 494 (1982), S. 49-54 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus Compounds with Adamantane-like Structure. VII. Preparation and Properties of Nonathio CyclotriphosphateReaction of both, P4S10 and P4S9, in liquid ammonia below -33°C yields ammonium nonathio cyclotriphosphate, (NH4)3[P3S9] (I), which crystallizes on cooling to -78°C. On ammonolytic decomposition of I trithio amidophosphate, (NH4)2[PS3(NH2)], is obtained. I reacts with PCl3 re-building the adamantane-like structure of P4S9. Further properties and reactions of I are described.
    Notes: Die Reaktion von P4S10 oder P4S9 mit flüssigem Ammoniak führt unterhalb -33°C zu Ammoniumnonathiocyclotriphosphat, (NH4)3[P3S9] (I), das beim Abkühlen auf -78°C auskristallisiert. Bei der ammonolytischen Spaltung von I entsteht Amidotrithiophosphat, (NH4)2[PS3(NH2)]. Mit PCl3 reagiert I unter Rückbildung der Adamantanstruktur des P4S9. Weitere Eigenschaften und Reaktionen von I werden beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824940106
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