The molecular polarity and polarizability of tri-isopropanolamine borate in benzene

Abstract

The apparent dipole moment and the electric birefringence of triisopropanolamine borate in benzene at 25° have been measured. The results can be interpreted in terms of solute-associations of the kind described by Pugh and Stokes. The dimer moment is compatible with a mixture of 60% parallel (→) and 40% anti-parallel (→ ←) forms, and the trimer moment with a mixture of 35% parallel (→ → →) and 65% anti-parallel (→ → ←) forms. These proportions are consistent with the observed molar Kerr constants.