Relaxational and associative aspects of X•••HO bond complexes

Relaxational and associative aspects of X...HO bond complexes in ternary liquid mixtures of aromatic halogen compounds, namely, chlorobenzene and bromobenzene with ethanol in benzene have been studied at 10 GHz frequency and a temperature range of 30-60degreesC using dielectric relaxation data. Due to the observed high values of distribution parameter, the relaxation mechanism has been further resolved in terms of two separate relaxation times. The dipole moment, association equilibrium constant and thermodynamic parameters associated with the complexes have also been determined. All the results indicate the occurrence of weak molecular interaction in both the systems. This is in agreement with the ultrasonic results on these systems, reported earlier by Kannappan and Palani.