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  • 1
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchung von 2,4-Bis(3,5-di-tert.-butyl-4-hydroxyphenyl)-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetan und ausgewählten AlkoholyseproduktenHerrn Professor Dr. Hans-Albert Lehmann zum 70. Geburtstag gewidmet (1989)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 331 (1989), S. 361-364 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N.M.R. Investigation of 2,4-Bis(3,5-di-tert.-butyl-4-hydroxyphenyl)-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetane and Selected Alcoholysis Products
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19893310224
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  • 2
    Electronic Resource
    Electronic Resource
    Phosphororganische Antioxidantien. IV. Chemisch induzierte Polarisation von 31P-Kernen in der Reaktion cyclischer Phosphite mit HydroperoxidenHerrn Prof. Dr. R. Mayer zum 60. Geburtstag gewidmet (1986)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 763-771 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organophosphorus Antioxidants. IV. Chemical Induced Polarization of 31P Nuclei in the Reaction of Cyclic Phosphites with Hydroperoxides31P-n.m.r. CIDNP is observed in the reactions of cyclic o-phenylene and ethylene phosphites with hydroperoxides. Polarized phosphorus nuclei appear especially in the phosphonate and phosphate regions. Application of Kaptein's rule shows that these products are cage or escape products of secondary or tertiary radical pairs. Solvent molecules are involved in the formation of the tertiary radical pairs.The concentration of the products formed from polarized 31P nuclei is very low.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19863280515
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  • 3
    Electronic Resource
    Electronic Resource
    13C-NMR-spektroskopische Analyse von Gemischen Isomerer Alkyl-4-butylmorpholine (1986)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 797-804 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C-N.M.R. Spectroscopical Analysis of Mixtures of Isomeric Alkyl-4-butylmorpholinesMixtures of isomeric alkyl-4-butylmorpholines 3 were prepared by the treatment of several 2,2′-dichloroalkyl ethers 1 (from the chlorination of alk-1-enes in the presence of ethylene oxide or propylene oxide) with butylamine and distinguished by 13C-n.m.r. The distribution of isomers of 3 is not changed in relation to that of 1 except 3g,g′.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19863280519
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  • 4
    Electronic Resource
    Electronic Resource
    13C-NMR-Spektren von 2-Bromcholest-5-en-3-onen (1984)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 326 (1984), S. 273-278 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C-N.M.R. Spectroscopic Investigation of 2-Bromo-cholest-5-en-3-onesThe 13C-n.m.r. spectra of the 2-epimeric 2-bromocholest-5-en-3-ones have been measured and the substituent effects are determined. The substituent effects of 2-Br and Δ5 double bond follow the rules known from literature.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19843260212
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  • 5
    Electronic Resource
    Electronic Resource
    13C-NMR-spektroskopische Untersuchungen von 2-,4-und 6-Bromderivaten des Cholest-4-en-3-ons (1985)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 327 (1985), S. 169-173 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C-N.M.R. Spectroscopic Investigations of 2-, 4-, and 6-Brominated Cholest-4-en-3-one Derivatives
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19853270126
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  • 6
    Electronic Resource
    Electronic Resource
    Umsetzung von Bromderivaten des 6β-Bromcholest-4-en-3-ons mit NaBH4 und 13C-NMR-spektroskopische Charakterisierung der Reduktionsprodukte (1986)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 582-588 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of Bromo Derivatives of 6β-Bromocholest-4-en-3-one with NaBH4 and 13C-NMR Spectroscopic Characterization of the Reduction ProductsBromo derivatives of 6β-bromcholest-4-en-3-one (1a-f) were reduced with sodium borohydride. The main product of the reduction of 2α,6β-dibromcholest-4-en-3-one (1b) was 2α-bromocholesterol (2b). In other cases the corresponding derivatives of 6β-bromocholest-4-en-3β-ol (3a) were formed. The chemical shifts of all new products were determined. They confirmed the structure of these new compounds.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19863280418
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetochemische Untersuchungen der höheren Vanadinoxyde (Vo1,5-Vo2,5) (1960)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 305 (1960), S. 121-132 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The magnetic susceptibilities of the higher vanadium oxides in the temperature range from -196 to 900 °C have been measured in order to investigate the phase relationsships in the system VO1,5-VO2,5.The existence of discrete compounds, VO1,67, VO1,75, VO1,80, VO1,84, VO1,86, VO1,87, and VO2,17, indicated by X-ray studies by Andersson resp. Aebi, is reflected in the magnetic properties in different measure. Vanadium dioxide apparently possesses a very narrow homogeneity range (VO1,995-VO2,000) in which the temperature of the susceptibility jump characteristic for VO2 increases from 65 to 67,5 °C.The observed values of the constants of the Curie-Weiss-law are discussed.
    Notes: Zur Untersuchung der Phasen-Verhältnisse im System VO1,5-VO2,5 wurden Messungen der magnetischen Suszeptibilität der höheren Vanadinoxyde bei Temperaturen von -196 bis 900°C durchgeführt.Die Existenz der von Andersson bzw. Aebi röntgenographisch nachgewiesenen diskreten Verbindungen VO1,67, VO1,75, VO1,80, VO1,84, VO1,86, VO1,87 und VO2,17 spiegelt sich in verschiedenem Maße in den magnetischen Eigenschaften wider. Vanadindioxyd besitzt offensichtlich einen sehr schmalen Homogenitätsbereich (VO1,995-VO2,000), innerhalb dessen die Temperatur des für VO2 charakteristischen Suszeptibilitätssprunges von 65 auf 67,5°C anwächst.Die für die Vanadinoxyde gefundenen Konstanten des Curie-Weiss-Gesetzes werden diskutiert.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19603050302
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  • 8
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchungen an Mercaptophosphazenen. I. Verlauf der Reaktion von Natriumethylmercaptid mit Hexachlorocyclotriphosphazatrien bzw. Octachlorocyclotetraphosphazatetraen (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 448 (1979), S. 100-106 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N.M.R. Spectroscopic Investigations of Thiophosphazenes. I. Reactions of Sodium Ethylthiolate with Hexachlorocyclotriphosphazatriene and OctachlorocyclotetraphosphazatetraeneBy reactions of hexachlorocyclotriphosphazatriene with an excess of sodium ethylthiolate as a suspension in ether all of the possible geminal derivatives N3P3Cl6-n(SEt)n; n = 1-6, are formed in different quantities. Products from reactions of octachlorocyclotetraphosphazatetraene with sodium ethylthiolate, N4P4Cl8-n(SEt)n, likewise contain all of the geminally substituted derivatives up to n = 8 with the exception of the derivatives with n = 1 and n = 7. Compounds with n = 3, 4, or 5 exist in two geminal isomers respectively. Nongeminal ethylthiochlorophosphazenes were not found by any reaction. The formed compounds were isolated by chromatographic methods and studied by 31P n.m.r. spectroscopy.
    Notes: Bei Umsetzungen von Hexachlorocyclotriphosphazatrien mit einem Überschuß an Natriumethylmercaptid in etherischer Suspension entstehen in unterschiedlichen Mengen alle denkbaren geminalen Substitutionsprodukte N3P3Cl6-n(SEt)n; n = 1-6. Im Reaktionsprodukt des Octachlorocyclotetraphosphazatetraens mit Natriumethylmercaptid, N4P4Cl8-n(SEt)n, lassen sich außer den Verbindungen mit n = 1 und n = 7 ebenfalls alle geminalen Substitutionsprodukte biz zu n = 8 nachweisen, wobei sich für die Verbindungen mit n = 3, 4, 5 jeweils beide geminalen Isomeren bilden. Nichtgeminale Mercaptochlorophosphazene waren bei keiner Umsetzung nachweisbar. Die entstandenen Verbindungen wurden säulenchromatographisch isoliert und 31P-NMR-spektroskopisch untersucht.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794480111
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  • 9
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchungen an 15N-markierten Oxocyclophosphazanen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 490 (1982), S. 121-128 
    Details
    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.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824900114
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  • 10
    Electronic Resource
    Electronic Resource
    NMR-spektroskopische Untersuchungen an 15N-markierten N-Phosphorylphosphazenen und Imidodiphosphorsäure-DerivatenProfessor Hans-Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 7-18 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N.M.R. Spectroscopic Studies of 15N Labelled N-Phosphorylphosphazenes and Imidodiphosphoric Acid Derivatives15N labelled compounds were prepared and investigated by means of 31P- and 15N-NMR spectroscopy. The chemical shift values δP and δN, and the coupling constants 1JPN and 2JPP are discussed and interpreted qualitatively by semiempirical quantumchemical calculations (CNDO/2) using POPLE'S ΔE-model.
    Notes: 15N-markierte Verbindungen der Substitutionsreihen wurden synthetisiert und mit Hilfe der 31P- und 15N-NMR-Spektroskopie untersucht. Die chemischen Verschiebungen δP und δN sowie die Kopplungskonstanten 1JPN und 2JPP werden diskutiert und qualitativ mit Hilfe halbempirischer quantenchemischer Rechnungen (CNDO/2) im Rahmen des POPLE-schen ΔE-Modells interpretiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845110402
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