SILYL-NITROGEN COMPOUNDS I. REACTIONS OF DILITHIUM BIS(TRIMETHYLSILYLL)HYDRAZINE WITH GROUP IV HALIDES

Article abstract of DOI:10.1016/0022-328X(86)82052-6

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.