Dipolar interaction of pyridine with isomeric butanols

Abstract

The net interaction energy between pyridine and isomeric forms of butanol are found experimentally from the excess values of internal pressure and free volume using ultrasonic techniques. The significance of the interaction relation is given in terms of the polar van der Waals force contribution, which is primarily dependent on statistical mixing rules. The net interaction energy, which is calculated directly from the dipole moment values, and the polarizability values are related to the energy contributions resulting from the various polar and non-polar van der Waals forces active in the interaction process. These energy contributions, which make up the total interaction energy are calculated for the interaction of the isomeric butanols with pyridine. On the basis of the results obtained, the effects of chain length and functionality of the alcohol on the interaction mechanism is discussed.