Role of Ru(III) as Inhibitor in Oxidation of Arabinose and Ribose by [Cu(bipy)2]2+ in Alkaline Medium: Spectrophotometric and Kinetic Studies

Abstract

The kinetics and mechanism of oxidation of arabinose and ribose by [Cu(bipy) There is a substantial decrease in the pseudo first order rate constant with increase in the concentration of RuCl3, indicating the role of RuCl3 as an inhibitor. The reaction also shows slight decrease in rate by increasing dielectric constant of the medium. Ionic strength of the medium and [Cl -] have no effect on the rate of oxidation. The activation parameters for the rate determining step have been calculated. Based on kinetic data and spectrophotometric evidences, a suitable mechanism is proposed.