Mehrfachbindungen zwischen Hauptgruppenelementen und übergangsmetallen, CII. Flüchtige MN4‐Metallkomplexe von Niob und Tantal mit Dimethylsilyl‐Substituenten

Multiple Bonds between Main-Group Elements and Transition Metals, CII[1]. — Volatile MN4 Metal Complexes of Niobium and Tantalum Containing Dimethylsilyl Substituents Niobium and tantalum complexes 4a and 4b of formula (Me2SiH)N=M[N(SiHMe2)2]3 (a: M=Nb; b: M=Ta) are formed from lithium bis(dimethylsilyl)amide and either MOCl3 (2a,b) or MCl5 (3a,b). No β-hydrogen decomposition of these compounds occurs under normal conditions.