Kerr constants and dielectric polarisations of amides and thioamides in water and dioxane solutions

Abstract

Measurements of dielectric polarisations and electric birefringences are reported for simple amides and thioamides in dilute aqueous and dioxane solutions. Interpretation of the exerimental data is made according to the Onsager, Block–Walker modified Onsager, and Lorentz models for the internal static field. The derived solute polarisability anisotropies from water are in fair concordance with those from dioxane provided the Onsager model is used. Combining refractivity and optical anisotropy data, polarisability tensor elements are derived for the solutes in water which are reasonably close to those in dioxane.