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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 111 (1980), S. 1321-1328 
    ISSN: 1434-4475
    Keywords: Charge transfer transitions ; Diffuse reflectance spectra ; Infrared spectra ; Silver sulfamides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die diffusen Reflexionsspektren (im Bereich von 700 bis 200 nm bei 300 K und 77 K) sowie die IR-Spektren (im SO2 und SN2-Valenzschwingungsbereich) von O2S(NHAg)2 und O2S(NAg2)2 werden mitgeteilt. Die niederenergetischen Banden in den diffusen Reflexionsspektren dieser diamagnetischen Verbindungen werden Charge-Transfer-Übergängen zugeordnet. Als Ursache für die Verschiebung der SO2-Valenzschwingungen einerseits sowie für die thermische und mechanische Instabilität andererseits wird eine Ladungsverschiebung aus dem S=O-Bereich über die Stickstoffatome zu den Silberatomen angenommen.
    Notes: Abstract Diffuse reflectance spectra (d.r.s.) of the diamagnetics O2S(NHAg)2 and O2S(NAg2)2 have been measured in the region from 700 nm to 200 nm at 300 K and 77 K, respectively. Additionally, infrared spectra in the region of the SO and SN stretching mode have been recorded. The energetically low-lying d.r.s. bands of these substances have been assigned to charge transfer transitions. The shift of the SO stretching modes together with the thermal and mechanical instability is thought to be due to a transfer of charge from the S=O bond regionvia the nitrogen atoms to the silver atoms.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 119 (1988), S. 457-461 
    ISSN: 1434-4475
    Keywords: Molecular structure ; 29Si-NMR ; 13C-NMR ; Tris-trimethylsilylurazole ; Bis-trimethylsilyl-4-methyl-urazole ; Bis-trimethylsilyl-4-methyl-dithiourazole ; Tris-trimethylsilyl-cyanurate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The molecular structures of persilylated urazoles: tris-trimethylsilyl-urazole, bis-trimethylsilyl-4-methyl-urazole, bis-trimethylsilyl-4-methyl-dithio-urazole, and tris-trimethylsilyl-cyanurate have been determined by29Si-,13C-NMR and IR measurements.
    Type of Medium: Electronic Resource
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