Aromatic nucleophilic exchange reactions. Part II. Solvent effects

Abstract

Homogeneous and heterogeneous rates for exchange of iodine between ammonium iodide and 1-iodo-2,4-dinitrobenzene have been measured in a series of aliphatic alcohols as solvents. The homogeneous exchange can be understood in terms of the Laidler–Eyring theory of solvent effects. For the heterogeneous exchange, changes in the activity coefficient of the iodide ion may be the principal contributor to the observed solvent effect.