Reactions of Distibines Sb<sub>2</sub>R<sub>4</sub> and Dibismuthine Bi<sub>2</sub>Et<sub>4</sub> with Trialkyltrieles MR<sub>3</sub>
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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][Sb2(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.
