Calculation of b* of Laidler and Landskroener Equation for Ion-Dipole Type of Reactions.

Abstract

The Laidler and Landskroener method for evaluating b*, the size of the activated complex in a bimolecular reaction, is applicable only when the transition state is polarized.  A more general method for calculating b* in case of above mentioned reactions irrespective of polarity of transition state has been suggested. The method has been applied in alkaline hydrolysis of ethyl picolinate in acetonewater mixture at temperatures 25^oC, 30^oC, 35^oC and 45^oC.  The b*  was fourid to be between 5 Å to 6 Å.