Synthesis and Characterization of 1-Aza-allyl Complexes with Al−Al, Ga−Ga, and In−In Bonds

The synthesis of new compounds containing Al−Al, Ga−Ga, and In−In bonds, the 1-aza-allyl ligand R (R = [(Me 3 Si) 2 C(Ph)C(Me 3 Si)N]), and halide substituents is described. The gallium(III) compound RGaCl 2 ( 1 ) was prepared by reaction of GaCl 3 with RLi·THF. The reduction of a mixture of RAlI 2 and RAlClI with potassium afforded [RIAl−AlClR] ( 2 ). [RGaCl] 2 ( 3 ) was synthesized by the reduction of RGaCl 2 with sodium/potassium alloy, while [RInBr] 2 ( 4 ) was prepared by reaction of RLi·THF with indium(I) bromide. The molecular structures of 1, 2, 3, and 4 have been established by X-ray crystallography.