Kinetics and mechanism of oxidation of l-glutamic acid by diperiodationickelate (IV)‎ in aquesous alkaline medium

Abstract EN

The title reaction is first order in both [diperiodationickelate(IV)] and [L-glutamic] acid and less than unit order in [OH-].

Peridodate has retarding effect on the rate of the reaction.

Effect of added products and ionic strength of the reaction medium have no significant effect on the reaction rate.

However, decrease in the dielectric constant of the medium retards the rate of the reaction.

A mechanism involving the monoperiodationickelate (IV) as the reactive species of the oxidant has been proposed.

The constants involved in the mechanism are obtained.

There is a good agreement between the observed and calculated rate constants.

The activation parameters are computed with respect to the slow step of the mechanism.