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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 2886-2899 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Partially Substituted Tetrazenes (Me3E)nN4H4 - n (E = Si, Ge, Sn): Preparation, Characterization, and Thermolysis1)Partially substituted tetrazenes (Me3E)nN4H4 - n (E = Si, Ge, Sn) can be prepared by protolysis of higher substituted tetrazenes (Me3E)oN4H4 - o (O 〉 n) or by silylation, germylation, or stannylation of lower substituted tetrazenes (Me3E)mN4H4 - m (m 〈 n). The obtained tetrazenes (Tab. 1) are colorless compounds; they have 2-tetrazene constitution, and trans-tetrazene configuration. The tetrazene (Me3Si)2N  -  N = N  -  NHX (X = H or GeMe3) isomerize by heating in dilute solution into (Me3Si)XN  -  N = N  -  NH(SiMe3). The thermolysis of (Me3Si)2N  -  N = N  -  NH(SiMe3) leads mainly to Me3SiN3 and (Me3Si)2NH (t140°C1/2140°C = 3/4 h), of (Me3Si)2N  -  N = NH2 to Me3SiN3 and Me3SiNH2 (concentrated solution; t140°C1/240°C ca. 1/4 h), and of (Me3Si)HN  -  N = N  -  NH(SiMe3) to N2 and (Me3Si)2N  -  NH2 (dilute solution; t140°C1/2140°C 〉 1 h) or to NH3 and (Me3Si)2NH (concentrated solution; t140°C1/2 〈 1 h).
    Notes: Teilsubstituierte Tetrazene (Me3E)nN4H4 - n (E = Si, Ge, Sn) können durch Protolyse höher substituierter Tetrazene (Me3E)oN4H4 - o (O 〉 n) oder durch Silylierung, Germylierung bzw. Stannylierung niedriger substituierter Tetrazene (Me3E)mN4H4 - m (m 〈 n) dargestellt werden. Die gewonnenen Tetrazene (Tab 1) sind farblose Verbindungen: sie haben 2-Tetrazen-Konstitution und trans-Tetrazen-Konfiguration. Die Tetrazene (Me3Si)2N  -  N = N  -  NHX (X = H oder GeMe3) isomerisieren sich in verdünnter Lösung beim Erhitzen in (Me3Si)XN  -  N = N  -  NH(SiMe3). Die Haupttermolyse von (Me3Si)2N  -  N = N  -  NH(SiMe3) führt zu Me3SiN3 und (Me3Si)2NH (t140°C1/2140°C = 3/4 h), von (Me3Si)2 (Me3Si)2N  -  N = NH2 zu Me3SiN3 und Me3SiNH2 (konzentrierte Lösung; t140°C1/240°C ca. 1/4 h) und von (Me3Si)HN  -  N = N  -  NH(SiMe3) zu N2 und (Me3Si)2N  -  NH2 (verdünnte Lösung; t140°C1/2140°C 〉 1 h) oder zu NH3t140°C und (Me3Si)2NH (Konzentrierte Lösung; t140°C1/2140°C 〈 1 h).
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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