Mechanistic Study of Ruthenium(III) Catalysed Oxidation of Glycine and Aanine by N-Bromoacetamide

摘要

The kinetics of Ru(III) catalysed oxidation of glycine and alanine by N-bromoacetamide(NBA) in perchloric acid media in the presence of mercury(II) acetate as a scavenger has been carried out in the temperature range of 30-45 deg C.Similar kinetics was followed by both the aminoacids.The reaction rate shows first order kinetics both in oxidant and Ru(III) while order with respect to substrate and [H~+] is zero.Increase in [Cl~-] showed positive effect while successive addition of acetamide exhibited negative effect on the reaction rate.Insignificant effect of sodium perchlorate,D_2O and mercury(II) acetate on the reaction rate was observed.Various thermodynamic parameters have been computed.A suitable mechanism in agreement with the kinetic observations has been proposed.