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.