THE CHEMISTRY OF ALUMINUM-NITROGEN COMPOUNDS: I. REACTIONS OF TRIMETHYLALUMINUM AND TRIMETHYLALUMINUM TRIMETHYLAMINE WITH SEVERAL METHYLHYDRAZINES

Abstract

The reactions of trimethylaluminum and trimethylaluminum trimethylamine with various methylhydrazines have produced a number of complexes and polymers: with methylhydrazine, both Me₃Al and Me₃Al:NMe₃ produce the polymer [—MeAlNHNMe—]_n with 1,2-dimethylhydrazine, both produce the polymer [—Al(MeNNMe)_1.5—]_n; with 1,1-dimethylhydrazine, Me₃Al produces [Me₂Al—NHNMe₂]₂ and Me₃Al:NMe₃ produces the unusual complex Me₂Al(NHNMe₂) (NH₂NMe₂); with trimethylhydrazine, Me₃Al produces [Me₂Al—NMeNMe₂]₂ and Me₃Al:NMe₃ produces an isomer with the same formula but an as-yet-uncharacterized structure. In addition, the intermediate Me₃Al:NHMeNMe₂ has been isolated from the reaction of either Me₃Al or Me₃Al:NMe₃ with trimethylhydrazine. With tetramethylhydrazine, Me₃Al produces Me₃Al:NMe₂NMe₂. The formation of the complexes with covalent aluminum–nitrogen bonds is specific and methane is the only gas eliminated during these reactions.