Flash photolysis study of phenyl-substituted phenols, quinones, and corresponding free radicals. Part 2. Dimerisation of 2,6-diphenyl-4-methoxyphenoxyl radical in various solvents

Abstract

Kinetic and thermodynamic parameters of the dimerisation of 2,6-diphenyl-4-methoxyphenoxyl radical to the dimer in various solvents have been obtained. A regular decrease in the rate constant of radical dimerisation in the order hexane > carbon tetrachloride > toluene > dioxan > chloroform has been observed. In all solvents this dimerisation was found to be diffusion-controlled.