Linear-free energy relationships in solid-state reactions-Part V Solid-solid reactions of copper(II) chloride with substituted anilines

Abstract

Solid-solid reactions of copper(II) chloride dihydrate with substituted anilines (XC₆H₄NH₂, where X = 4-CI, 4-Br,4-I, 4-CH₃, and 4-OCH₃) have been studied. The reaction products CuCl₂-[XC₆H₄NH₂)₂ ha been characterized. The kinetics have been studied by measuring the increase in thickness of the colored boundary of the product. The energies of activation are 55.7, 58.3, 81.1, 48.0 and 36.0 kJ mol^-1 for X=4-CI, 4- Br, 4-I, 4-CH₃ and 4-OCH₃ respectively. There is no correlation of rate data or activation energy with either of the Hammett's constants.