QSAR, Benzamides, Herbicidal activity, Photosynthetic electron transport inhibition.

Abstract

Ultrasonic velocity (U), density (ρ) and viscosity (η) measurement have been carried out in 3 ternary liquid mixtures of 1-propanol, 1-butanol and 1-pentanol with toluene in a non-polar of ethyl benzene at 303K. The experimental data have been used to calculate adiabatic compressibility, free length, free volume, internal pressure, available volume and their excess values. An attempt has been made to evaluate the experimental ultrasonic velocity with those predicted on the basis of free length theory (FLT) and collision factor theory (CFT) with a view to compare the merits of the above 3 ternary liquid mixtures. The modulus of percentage deviation in ultrasonic velocity is applied to check the validity of the theories. The relative interaction (RI) is also calculated and found to be useful in understanding molecular interaction in ternary liquid mixtures.