- SILYL-NITROGEN COMPOUNDS I. REACTIONS OF DILITHIUM BIS(TRIMETHYLSILYLL)HYDRAZINE WITH GROUP IV HALIDES
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Dilithium 1,2-bis(trimethylsilyl)hydrazine (1) reacts with CCl4, Me3SiCCl3 and CBr4 to form predominantly bis(trimethylsilyl)aminocarbonimidic dichloride, bis(trimethylsilyl)aminoisocyanide and bis(trimethylsilyl)diazene, whereas similar reactions with HCCl3, HCI3, H2CCl2, H2CI2, C2H4Cl2 or C2H2Cl4 lead to increasing amounts of bis(trimethylsilyl)hydrazine.In addition to the hydrazone, (Me3Si)2N-N=CH(Cl), the reaction of 1 with CHCl3 forms a small amount of triazasilacyclopentane,.............. .In contrast, Me2SnCl2 reacts with 1 to give tetraazadistannacyclohexane (Me2Sn(NSiMe3)2)2, whereas SnCl4, SnCl2 and PbCl2 act mainly as oxidants and Me2SiCl2 forms polymers.Another product of the reaction of 1 with SnCl2 or PbCl2 is LiN(SiMe3)2 originating perhaps from LiNH(SiMe3) or (LiNN(SiMe3)2)2.
- Vasisht, Sham Kumar,Sood, Mohini,Sood, Nirupma,Singh, Gursharan
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- Partially Substituted Tetrazenes (Me3E)nN4H4-n (E = Si, Ge, Sn): Preparation, Characterization, and Thermolysis
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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 140 deg C1/2 = 3/4 h), of (Me3Si)2N-N=N-NH2 to Me3SiN3 and Me3SiNH2 (concentrated solution; τ40 deg C1/2 ca. 1/4 h), and of (Me3Si)HN-N=N-NH(SiMe3) to N2 and (Me3Si)2N-NH2 (dilute solution; τ140 deg C1/2 > 1 h) or to HN3 and (Me3Si)2NH (concentrated solution; τ140 deg C1/2 1 h).
- Wiberg, Nils,Meyers, Rene,Vasisht, Sham Kumar,Bayer, Heiner
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p. 2886 - 2899
(2007/10/02)
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- Darstellung silylierter Lithium-tetrazenide
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Reactions of butyllithium with tris- or bis(trimethylsilyl)tetrazene, (Me3Si)3N4H or (Me3Si)2N4H2, lead to tetrazenides 1 - 3 which are sensitive in hydrolysis and thermolysis as well as against oxygen.Reactions (1) - (6) refer to their modes of thermolysis.
- Wiberg, Nils,Bayer, Heiner,Vasisht, Sham Kumar
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p. 2658 - 2660
(2007/10/02)
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