Preparation and properties of some primary silyl- and germyl-arsines

Abstract

Lithium tetra-arsinoaluminate, LiAl(AsH₂)₄, reacts with halogeno-silanes and -germanes to produce the corresponding, primary silyl- and germyl-arsines. Silyl-, germyl-, disilanyl-, and trimethylsilyl-arsine have been obtained in higher yields than from previous methods. Methylsilyl-, methylgermyl-, and trimethylgermyl-arsine have been prepared for the first time and their i.r. and ¹H n.m.r. spectra are reported. The two new germylarsines have also been prepared by exchange reactions between silylarsine and the halogenogermanes. Some typical reactions of primary silyl- and germyl-arsines are described.