Synthesis and structure of silicon compounds intramolecularly coordinated by hydrazino groups
作者:Johannes Belzner、Dirk Schär、Regine Herbst-Irmer、Boris O. Kneisel、Mathias Noltemeyer
DOI:10.1016/s0040-4020(98)00451-7
日期:1998.7
silicon center in solution. Diethoxy compound 20 is hexacoordinate in the solid state due to interaction with the hydrazino groups of both aromatic substituents, whereas in dichlorosilane 22 only the amino group of the 2-(trimethylhydrazino)phenyl substituent coordinates to the silicon center. The coordinating ability of the 2-(trimethylhydrazino)phenyl substituent has been used to stabilize silyl cations
通过用Me 3 SiCl和SiCl 4处理相应的芳基锂,已经制备了带有2-(三甲基肼基甲基)苯基和2-(三甲基肼基)苯基取代基的有机硅化合物。氯硅烷的后续反应10,15,18,和22,得到各种官能化的硅烷的。大多数2-(三甲基肼基)苯基取代的硅烷的NMR光谱数据表明溶液中的硅中心高度配位。由于与两个芳族取代基的肼基基团相互作用,二乙氧基化合物20在固态为六配位化合物,而在二氯硅烷22中只有2-(三甲基肼基)苯基取代基的氨基与硅中心配位。2-(三甲基肼基)苯基取代基的配位能力已用于通过形成五配位硅离子33和34来稳定甲硅烷基阳离子。