Syntheses and structures of quinuclidine-stabilized amido- and azidogallanes

Quinuclidine-stabilized amido- and azidogallanes, HGa[N(TMS)(2)](2)(quin) ( 1), H2Ga[N(TMS)(2)](quin) (2), HGa[N(H)(2,6-(Pr2C6H3)-Pr-i)](2)(quin) (3), and H2GaN3(quin) (4), were synthesized from the quinuclidine adducts of mon o and dichlorogallane. Structural determinations revealed that all compound s were monomeric with four-coordinate gallium centers. Reactions of the fiv e-coordinate compound, HGaCl2(quin)(2), with 2 equiv of Li[N(TMS)(2)] or Li [N(H)(2,6-(Pr2C6H3)-Pr-i)] resulted in the isolation of compound 1 or 3. A ligand redistribution during the reaction of H2CaCl(quin) with Li[N(H)(2,6- (Pr2C6H3)-Pr-i)] produced compound 3 and H3Ga(quin) in a 1:1 molar ratio.