Alkylaluminum Hydride Trimethylamine Complexes

Abstract

Alkylaluminum hydride trimethylamine complexes have been obtained by several different methods: ( a ) reduction of an alkylaluminum halide trimethylamine complex with lithium hydride, (b) alkylation of aluminum hydride trimethylamine with dialkylmercury, (c) reaction of trialkylaluminum trimethylamine and aluminum hydride trimethylamine, and (d) reaction of dialkylaluminum chloride with lithium aluminum hydride and trimethylamine. Some physical properties of the compounds are reported, including the infrared and proton magnetic resonance spectra. Cryoscopic n~olecular weight determinations indicate that the compounds are associated in cyclohexane. Their possible structures are discussed.

Coordination compounds of methyl gallium hydrides

“…spectra of the product so~utioa and the appearance of mercury in tile product nixture. The low yields in this reacGon aTe ir, contrsst to the corresponding system in aEane chemistry where quite high yields are reported from the reaction at elevated temperatures (16).…”

“…The corresponding alane compounds, Me3NAlH2Me and Me,NAIHMe2, were also obtained by route D as previously described by Peters et al (16). Investigation of the borane systems gave no indication of equilibration between Me3NBH3 and Me3NBMe, as evidenced by p.m.r.…”

“…However, the gallane derivatives are much less stable than the corresponding borane (1 5) and alane (16) compounds.…”

“…Peters et ak. (16) explained the "doublet" appearing above 10% in the p.ni.r. spectra of these compounds in cyclohexane solution in terms of dimerization involving hydrogen and/or methyl bridging groups.…”

The Chemistry of Aluminum–nitrogen Compounds: Ii. Reactions of Tetramethyltetrazene With Aluminum Hydride and Trialkylaluminum Complexes

“…The t r i n~e t h~l a l u~n i n u~~~ trimethylanline was prepared by a procedure described by Brown and Davidson (3). The compound was purified by vacuum sublimation a t GO0 C. Triethylaluminum trimethylamine was synthesized in this laboratory (4) and was used without further purification. The aluminu~n hydride trin~ethyla~nine was prepared by a procedure described first by \Viberg (5) and later improved and si~nplified in this laboratory (4).…”