Chloride and phosphide-substituted gallium hydrides: [Cy 3 PGaH 3 –n Cl n ]n= 1 or 2, and trimeric [{H 2 Ga(µ-PCy 2 )} 3 ]

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.