Stickstoffverbindungen von Elementen der dritten Hauptgruppe mit intra- und intermolekularen Donor-Akzeptor-Bindungen. - V : Spezielle Gallium- und Indium-amide mit Alkoxogruppen

Abstract

The lithium alkoxoamidosilane (Me2Si(OtBu)(NtBu)2 (4) and its trimethyltin derivative Me2Si(OtBu)(NtBu)SnMe3 (7) have been used, to introduce the ligand Me2Si(Otbu)(NtBu) = L into molecular compounds of gallium and indium. The following molecules were synthesized : L-M(Me)Cl (M = Ga(5), In (6)), L-InMe2 (8); L-InX2 (X = Cl (9), Br(10)), L2InX (X = Cl of temperature dependent 1H NmR spectra. the chelating effect is more pronounced in the gallium derivatives than in the indium analogues. Equilibria between L2InX/InX3 and LInx2 have bee observed in diethylether solutions. No metal(I) deribatibes LGa or LIn could be isolated. L2Ga2Cl2 (22), formally containing gallium(II), can be sublimed without decomposition at 110°C in vacuo.