Silicon–phosphorus hydrides. Part II. A comparative study by proton magnetic resonance spectroscopy of the isomers disilanyl- and disilyl-phosphine

Abstract

Complex triple mixed hydrides are formed when disilanyl- and disilyl-phosphine react with diborane. Their formation is confirmed by ¹H n.m.r. spectroscopy and comparisons are drawn of features in the spectra before and after adduct formation. Specific deuteriation indicates hydrogen exchange between the SiH₂ and BD₃ sites in SiH₃·SiH₂·PH₂,BD₃. A new silicon phosphorus hydride, tris(disilanyl)phosphine is produced instead of disilanylphosphine–borane by a slight variation of conditions.