DIELECTRIC BEHAVIOR OF POLAR-POLARIZABLE SOLVENTS IN GENERIC MEAN SPHERICAL APPROXIMATIONS - THE KIRKWOOD G(K)-FACTOR

The dielectric properties of polar solvents are considered within the context of generic mean spherical approximations. Given the molecular diameter in a spherical representation, the dipole moment, and molecul ar polarizability, the static permittivity of such a solvent is estima ted on the basis of the Wertheim polarization parameter and a stickine ss parameter which accounts for other electrostatic features of the bu ll: system and nonsphericity of the actual solvent molecules. The stic kiness parameter is related to the magnitude of dipole-dipole interact ions for a series of solvents with the same polar group. This model is also used to estimate the Kirkwood structure factor. The values obtai ned are in excellent agreement with structural features of these syste ms obtained from experiment.