Aminoderivate hydrierter Oligosilane: Darstellung, Charakterisierung und Eigenschaften

摘要

Amino derivatives of linear and branched tri- und tetrasilanes R2N-H2Si(SiH2)SiH2-NR2H3SiSiHNR2SiHNR2SiH3, R2N-H2SiSiH2SiH2SiH2-NR2und (R2N-H2Si)2SiHSiH(SiH2-NR2)2with R = Et, SiMe3are formed by the reaction of the corresponding bromooligosilanes with suitable amines or alkali metal amides. Product distribution and yields are strongly influenced by the nucleophilicity of the amino reagent and by the structure of the SiSi-backbone. The structures proposed for the aminopolysilanes thus prepared are proved by29Si-,1H-NMR-and MS-investigations.