作者:A. I. Chernyavskii、B. G. Zavin
DOI:10.1007/bf02505684
日期:1997.8
alpha,omega-Dibromopermethyloligosilanes, Br(SiMe2)(n)Br (n = 2-4, 6), were prepared by the reaction of dodecamethylcyclohexasilane with bromine. The reaction of (Me2Si)(6) with MCl4 (M = Sn, Ti) proceeds with the cleavage of Si-Si- and Si-C-bonds with the formation of alpha,omega-dichloropermethyloligosilanes, CI(SiMe2)(n)Cl (n = 2-4, 6), and chloro derivatives of cyclohexasilane, ClmSi6Me12-m (m = 1, 2). Silane-siloxane copolymers of regular structure were obtained by heterofunctional copolycondensation of alpha,omega-dihalopermethyloligosilanes with 1,5-dihydroxyhexamethyltrisiloxane.