The Redox Reaction between Di-μ-Oxo-Tetrakis (2, 2’- bipyridine) – Dimanganese (III, IV) Perchlorate and 1, 3-Dihydroxybenzene in Hydrochloric Acid

Abstract

The redox reaction between di-μ-oxo-tetrakis (2, 2’- bipyridine) – dimanganese (III, IV) perchlorate ³⁺ and 1,3-dihydroxybenzene ( Q) in hydrochloric acid was investigated using spectroscopic technique. The stoichiometry of the reaction was 2:3 for ³⁺: Q. The rate of reaction was first order with respect to both species while the overall rate of reaction was second order. Investigation of the effect of ionic strength on the reaction gave evident for non-dependence of the rate of reaction on change in dielectric constant, D, of the medium. The rate of the reaction increased with increase in the concentration of the acid and was found to be unaffected by the addition of added (Ni²⁺, NO₃^- and HCOO^-) ions. There was no gel-formation in the course of the reaction and Michaelis-Menten’s type plot gave a straight line starting from the origin.