Chloride and phosphide-substituted gallium hydrides: [Cy3PGaH3 –nCln]n= 1 or 2, and trimeric [{H2Ga(µ-PCy2)}3]

Abstract

Thermally robust chlorogallanes, CY₃PGaH₂Cl 1and Cy₃PGaHCl₂2, accessible by redistribution reactions involving Cy₃PGaH₃ and Cy₃PGaCl₃(Cy = cyclohexyl) or 1via anhydrous HCl reaction with Cy₃PGaH₃, show phosphine but not chloride–hydride exchange in aromatic solvents; treatment of 1 with [Li(PCy₂)(thf)_n] affords trimeric [{H₂Ga(µ-PCy₂)}₃]3, which crystallises in a twist-boat conformation.