Kinetics and mechanistic study of oxidation of nicotinamide by bromamine-t in hydrochloric acid medium catalyzed by ru(iii) ion

Oxidation of nicotinamide by bromamine-T (BAT) have been studied in HCl medium catalyzed by Ru(III) at 303K. The reaction rate shows first order dependence on (oxidant), (Ru(III)), inverse fractional order on (H+) and fractional order on (nicotinamide). Addition of halide ions and the reduction product of BAT, p-toluenesulphonamide and dielectric constant of the medium do not have any significant effect on the reaction rate. The reaction was studied at different temperatures and activation parameters were evaluated. Mechanisms proposed and the derived rate law is consistent with the observed kinetics.