Die Umsetzung von Dialkylaluminiumchloriden mit Bis(trimethylsilyl)hydrazin: Bildung von Addukten R2AlCl · NH2NHSiMe3 mit dem thermisch unbeständigen Trimethylsilylhydrazin

The Reaction of Dialkylaluminium Chlorides with Bis(trimethylsilyl)hydrazine: Formation of the Adducts R₂AlCl · NH₂NHSiMe₃ Containing the Unstable Monotrimethylsilylhydrazine Bis(trimethylsilyl)hydrazine did not react with dialkylaluminium chlorides R₂AlCl [R = CH₂CMe₃, CMe₃ and CH(SiMe₃)₂] by the formation of trimethylchlorosilane, but by dismutation to yield tris(trimethylsilyl)hydrazine and trimethylsilylhydrazine. The unstable, sterically less shielded NH₂NHSiMe₃ was stabilized by the coordination to the coordinatively unsaturated aluminium compounds. The adducts R₂AlCl · NH₂NHSiMe₃ were formed, which were characterized by crystal structure determinations with R = CMe₃ and CH(SiMe₃)₂. In all cases, the hydrazine derivative binds to the aluminium atoms via the more basic NH₂ nitrogen atom. The adduct Me₃CAlCl₂ · NH₂N(SiMe₃)₂ containing intact 1,1‐bis(trimethylsilyl)hydrazine as a ligand was isolated in a trace amount and also characterized by a crystal structure determination.