The reactions of Me3A1 with MeZNNMe2 and Me2SCHzNMe2 have yielded complexes whose n.m.r. spectra suggest cyclic structures. They have the formulas MeaAl:Mezi\'N;\Iet and Me3Al:MezNCH2\TMez respectively. Me3AI reacts with Me2NCHZCHzNMe2 to form a complex with a linear structure and the formula Me3A1:MezNCH2CH2NRIIez:L41Me3The reactions of H3A1:NMe3 with several methyl hydrazines have yielded the folloming compounds: [-Al(HNNHMe)NHNMe-In, ,:NMe3],, and H2A1-NMez. No reaction occurred between H3Al.(EtzO), and tetramethylhydrazine and the reaction of 3 moles of HJVNMe2 with 1 mole of H3A1:NMe? yielded a compound for which no structural formula could be assigned, but which had en~perical formula C4HljN5Al. INTRODUCTIOS

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.

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.

Divinylquecksilber wurde durch Behandlung von Quecksilber (II) -chlorid oder bromid mit einem Überschuß von Vinylmagnesiumbromid dargestellt. Durch verdünnte Schwefelsäure wird die Vinylgruppe vom Divinylquecksilber als Äthylen abgespalten. Die Reaktion von Quecksilber (II) -halogeniden mit Vinylgrignard-Verbindungen in einem Verhältnis 1: 1 gibt die Verbindungen CH2: CHHgX (X=Cl, Br, J). Die Vinylquecksilberhalogenide werden durch Behandlung mit Äthyl- oder Phenyl-Grignardverbindungen in die gemischten Verbindungen CH2: CHHgR (R=C2H5, C6H5) übergeführt.