Polarities and directional polarisabilities of trimethylamine adducts of boron trihydride and boron trihalides. Stereospecific solute–solvent interactions

Abstract

Molar Kerr constants are reported for the boron trihydride and the boron trihalide adducts of trimethylamine as solutes in dioxan and benzene. The anisotropic electron polarisabilities of the adduct molecules are derived from the measurements in dioxan. The changes in polarisability on co-ordination are discussed. Estimates of the polarisability parameters for a tetrahedrally disposed BX₃(X = H, F, Cl, Br, and I) are derived. The molar Kerr constant data in benzene are interpreted in terms of stereospecific solute-solvent interactions.