Thermodynamic viscous flow activation characteristics of the n-aliphatic derivatives of cyclohexane and benzene

Viscous flow activation parameters for homologous series of the n-aliphatic derivatives of cyclohexane and benzene were calculated on the basis of transition state theory. Transmission coefficients and true entropy values of the viscous flow activation process in these liquids have been evaluated using kinetic compensation effects and Shakhparonov's general theory of fluid viscosity. The results obtained allow to conclude that the intermolecular interactions caused by weak C-sigma - H...C-sigma bonds are more distinct in homologous series of the n-aliphatic derivatives of cyclohexane. (C) 2004 Published by Elsevier B.V.