Reactions of distibines Sb2R4 and dibismuthine Bi2Et4 with trialkyltrieles MR3

Distibines Sb2R4 react with trimethylgallane and -indane (MMe3; M = Ga, In) with formation of heterocycles of the general type [Me2MSbR'(2)](3) (R' = Me, M = Ga (2), In (3); R' = i-Pr, M = Ga (4)), whereas only decomposition reactions were observed for reactions with trialkylalanes. However, the mononuclear distibine-alane adduct [Al(t-Bu)(3)][Sb-2(i-Pr)(4)] (1) with the distibine serving as monodentate ligand could be isolated and structurally characterized. In addition, reactions of the dibismuthine Bi2Et4 with M(t-Bu)(3) (M = Al, Ga) were investigated, resulting in the formation of the simple Lewis acid-base adducts Et3Bi-M(t-BU)(3) (M = Al (5), Ga (6)). 1-6 were characterized by multinuclear NMR and mass spectroscopy and elemental analysis as well as single-crystal X-ray diffraction.