Dielectric Studies of Binary Mixtures of some Amines—Aniline and Pyridine—in Nonpolar Solvents—Solute–Solvent Interactions

Abstract

Dielectric constant of binary mixtures of aniline and also pyridine in nonpolar liquids namely benzene, carbon tetrachloride, p-xylene and n-heptane have been measured at 455 kHz for four different temperatures. Eyring's interaction parameter G∗ based on the significant structure model is calculated in the mixtures using the experimentally determined value of dielectric constant.

The nature of the solvent is found to influence this parameter G∗ reflecting the non-specific solute-solvent interaction. The calculated value of G∗ is used for interpreting dipole interaction of solute molecules in the solvent environment.

Key Words:

• Dielectric constant
• binary mixture
• significant structure theory
• solute-solvent interaction