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  • Chemistry  (2)
  • 1980-1984  (2)
  • 1981  (2)
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 49-54 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Darstellung und Reaktionen einiger neuer fluorierter ketostabilisierter Arsonium-YlideZwei neue fluorierte ketostabilisierte Triphenylarsoniumsalze 2a, b werden dargestellt, die bei der alkalischen Zersetzung die entsprechenden neuen Arsoniumylide 3a, b ergeben. Bei Zugabe von Perchlorsäure entstehen daraus die Perchlorate 4a, b.Bei der Reaktion der Ylide 3a, b mit aromatischen Aldehyden entstehen in hohen Ausbeuten die Fluorchalcone 5a-e, 6a-c ohne nennenswerte Epoxidbildung. Zwei neue fluorierte Diketoarsoniumylide 7a, b werden durch Acylierung der Monoketoarsoniumylide dargestellt. Die Verbindungen sind durch Elementaranalysen, IR- und NMR-Spektroskopie belegt.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 11 (1981), S. 127-130 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Room temperature polarized Raman spectra of potassium sulphamate single crystals have been investigated in the region 30-3400 cm-1 using laser excitation. All lattice modes, excepting two, have been observed. The reassignment of the internal modes of (NH2SO3)- ion has been verified by computing the potential energy distribution. The observed correlation field splitting in KNH2SO3 crystal is very small, of the order of 5-10 cm-1.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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