Structure of hexaammines of aluminum borohydride and chloroborohydrides

Abstract

1. It was shown by the method of IR spectroscopy that under the action of ammonia on aluminum borohydride, monochloroborohydride, and dichloroborohydride, there is a nonsymmetrical cleavage of the A1H2B groups with the formation of “salt-like” compounds, constructed from [A1(CH3)6]3+, Cl−, and BH 4 − . 2. The parameters of the rhombic cells of the compounds A1(BH4)3·6NH3, A1(BH4)2C1·6NH3, A1(BH4)C12·6NH3, and A1C13·6NH3. 3. The valence force constant of the Al-N bond was calculated in the approximation of a “diatomic” model, and the Al-N interatomic distance was determined in the octahedron [A1(NH3)6]3+.