Arsinohydrazines: reactions of hydrazine and substituted hydrazines with organo-arsine derivatives

Abstract

Reactions between organo-arsine derivatives (CF3)2AsX and (CF3)3As and hydrazine or substituted hydrazines are discussed as synthetic routes to a new class of hydrazinoarsine compounds. The systems [(CF3)2As]x N2H4−x are unstable with respect to elimination of CF3H and N2, but stability increases with increased methylation of the nitrogen atoms. The new compounds described are: N-methyl, N′-bis(trifluoromethyl)arsinohydrazine, MeNHNHAs(CF3)2, (1) (highly unstable at room temperature); N,N-dimethyl, N′-bis(trifluoromethyl)arsinohydrazine, Me2NNHAs(CF3)2, (2) (m.p. 3.00° ± 0.15°, b.p. 20°/14.6 mm); and trimethylhydrazino-bis(trifluoromethyl)arsine, Me2NNMeAs(CF3)2, (3) (m.p. −41.5° ± 0.5°, b.p. 15°/6.30 mm). The observed order of stability was [Formula: see text]