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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 339 (1997), S. 82-84 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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  • 2
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The partially diethylamino substituted phenyl-chloromono- and -disilanes Cl2Ph(NEt2)Si(2) Cl2Ph(NEt2)2Si(3), [ClPh(NEt2)Si-]2 (7) and Cl(NEt2)PhSi—SiPh(NEt2)2 (8) were synthesized. 3 and 8 are able to react with lithium powder to form the corresponding silyllithium compounds. The resulting species were characterized in solution by 13C and 29Si NMR spectroscopy. To prove the expected substitution patterns of the silyllithium compounds some coupling reactions with chlorosilanes were carried out and the resulting new oligosilanes were characterized by means of NMR spectroscopy and MS.
    Additional Material: 3 Tab.
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 339 (1997), S. 603-606 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Preparation and Characterization of Oligomeric as well as Polymeric Ethynylsilanes Containing Si2—Si4 UnitsThe treatment of methylchlorodisilanes with ethynyldigrignard (BrMgC≡CMgBr) resulted in oligomeric as well as polymeric ethynyldisilanes. The kind of this products is related to the chloro functionality of the starting disilane. The reaction of SiClMe(SiCl2Me)2 as well as SiMe(SiCl2Me)3 yielded polymers beside small amounts of the monomeric products (HC≡C)MeSi[SiMe(C≡CH)2]2 and MeSi[SiMe(C≡CH)2]3.
    Additional Material: 5 Tab.
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  • 4
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 317 (1975), S. 675-681 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Chlormethylierung von schwach vernetztem Polystyrol gelingt die Ankettung von Hydrazid- und Verdazylgruppierungen. Die Polymeren werden dadurch koordinationsaktiv gegenüber Cu2+-Ionen. Eine Fixierung der Cu(II)-Verbindungen an den Polymeren wird ESR-spektroskopisch bewiesen.Polymere Verdazyle aus 1,3,5-Triphenylformazan und chlormethyliertem Polystyrol können Cu(II)-Salze reduzieren. Ihre Reaktivität wird vom Lösungsmittel (Äthanol 〉 Acetonitril 〉 Dimethylformamid 〉 Dimethylsulfoxid) und vom Anion (Cl- 〉 SO42-, NO3-) beeinflußt.
    Additional Material: 2 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 321 (1979), S. 75-85 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Fe(III)-Complexes with Mixed Ligands Consisting of Oxalate and Phenolate LigandsThe formation of mixed-ligand complexes between iron(III) ion, potassium oxalate and potassium salts of salicylic acid, sulfosalicylic acid, catechol, sodium 3,5-sulfocatechol („tiron“) and tetrachlorocatechol, respectively, has been investigated. There were obtained solid products with the approximate composition K3[Fe(C2O4)3-xLx] · n H2O (L = phenolat; x = 1; 2). For the synthesis of the above compounds ligand exchange reactions as well as addition-technique of oxalic acid followed by potassium phenolat to Fe2O3 · aq has been used. Through spectroscopic examination of the obtained products was found, that Fe3+-ion is simultaneously coordinated by oxalat and phenolat. Probably the products consist of at least two components as Fe(III) was found in two different bond states.
    Additional Material: 2 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 360-366 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Constitution and Redox Stability of Copper(II)-Complexes with Substituted HydrazinesCuCl2 reacts with substituted hydrazines forming chelates of the CuIIL2Cl2 type (L = RCONHNH2, RCONHN(C6H5)2, RCONHNHCOR, H2NNHCO(CH2)nCONHNH2) which are characterized by quantitative analysis, i.r. and e.p.r. spectra. The complex polyhedron exhibits the geometry of a tetragonally distorted octahedron of C2v symmetry. The complexes undergo intramolecular redox decomposition in acetonitril forming Cu(I) species.The rate constants increase with decreasing half wave oxydation potential and decreasing Homo energy of the hydrazine ligands, respectively.
    Additional Material: 4 Ill.
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  • 8
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The nitride halides of the alkaline earth metals are prepared by sintering or melting together the anhydrous halides with the corresponding nitrides in nitrogen atmosphere. The existence of the calcium and strontium compounds is proved by thermoanalysis and X-ray spectroscopy. The “red crystals”, appearing in the course of the technical destillation of calcium, consist of Ca2NCl, which contains greater or smaller quantities of dissolved calcium.
    Notes: Die Nitridhalogenide der Erdalkalimetalle Ca2NCl, Ca2NBr, Ca2NJ, Sr2NCl, Sr2NBr, Sr2NJ, Sr6NJ9 und, wie von Ehrlich und Mitarbeitern gefunden, Ba2NCl, Ba2NBr und Ba6NJ9 lassen sich durch Zusammensintern bzw. -schmelzen der wasserfreien Erdalkalimetallhalogenide mit den entsprechenden Nitriden in Stickstoffatmosphäre darstellen. Die Existenz der Calcium- und Strontiumverbindungen wird thermoanalytisch und röntgenographisch bewiesen. Die bei der technischen Calciumdestillation auftretenden „roten Kristalle“ bestehen aus Ca2NCl, das mehr oder weniger große Mengen Calcium gelöst enthält.
    Additional Material: 7 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 335 (1965), S. 195-205 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The decomposition of alkaline-earth nitrides halides Me2NX (Me = Ca, Sr, Ba; X = Cl, Br, J) in CO2-free water vapour atmosphere has been investigated. Hydrates of calcium halides of the formula CaX2 · 3 Ca(OH)2 · 12 H2O are formed in this reaction, Sr does not form definite hydrates. Barium nitride halides give mixtures composed of Ba(OH)2 · 8 H2O and BaX2 · Ba(OH)2 · 4 H2O.IR-spectra of substances produced by dehydration of the decomposition products, which are pure compounds (Ca2(OH)3X) or hydroxide, hydroxide halide and halide mixtures (strontium and barium), suggest that the main kind of bonding is the hydrogen bridge bonding.
    Notes: Die Zersetzung der Erdalkalimetallnitridhalogenide Me2NX (Me = Ca, Sr, Ba; X = Cl, Br, J) in CO2-freier Wasserdampfatmosphäre wird näher untersucht. Bei diesem Vorgang bilden sich aus den Calciumnitridhalogeniden Hydrate der Formel CaX2 · 3 Ca(OH)2 · 12 H2O, während aus den Strontiumnitridhalogeniden keine definierten Hydrate entstehen. Die Bariumnitridhalogenide gehen in Gemische aus Ba(OH)2 · 8 H2O und BaX2 · Ba(OH)2 · 4 H2O über.Die UR-Spektren der durch Entwässerung der Zersetzungsprodukte erhaltenen Substanzen, bei denen es sich teils um reine Verbindungen (Calciumhydroxidhalogenide Ca2(OH)3X), teils um Gemische aus Hydroxiden, Hydroxidhalogeniden und Halogeniden (Strontium und Barium) handelt, zeigen, daß Wasserstoffbrückenbindungen maßgeblich den Bindungscharakter bestimmen.
    Additional Material: 13 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 370 (1969), S. 119-127 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An experimental arrangement is described to measure the emf of cells of the type \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Cl}_2,\,{\rm C}|{\rm MeCl}|{\rm CaCl}_2 - {\rm MeCl}({\rm x})|{\rm C},\,{\rm Cl}_2 $$\end{document}.From the emf-values the transference numbers of the cations Ca2+ and Me+ relative to the chloride ion in the molten mixtures CaCl2—LiCl, CaCl2—NaCl and CaCl2—KCl result. The necessary values of activities of the compounds for the systems CaCl2—LiCl and CaCl2—NaCl are calculated from cryoscopic analysis of the eutectic phase diagrams.
    Notes: Zur Messung der EMK einer Zelle von Typ \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Cl}_2,\,{\rm C}|{\rm MeCl}|{\rm CaCl}_2 - {\rm MeCl}({\rm x})|{\rm C},\,{\rm Cl}_2 $$\end{document} (Me = Li, Na, K, Rb) wird eine apparative Anordnung beschrieben. Aus der Zellen-EMK ergeben sich die Überführungszahlen der Kationen Ca2+ und Me+ in den geschmolzenen Mischungen CaCl2—LiCl, CaCl2—NaCl und CaCl2—KCl in bezug auf das Chloridion. Die notwendigen Aktivitätsdaten werden für die Systeme CaCl2—LiCl und CaCl2—NaCl durch kryoskopische Auswertung der eutektischen Schmelzdiagramme ermittelt.
    Additional Material: 2 Ill.
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