Abstract
OXIDATION OF 2-AMINO-4-(METHYLTHIO) BUTANOIC ACID BY BENZIMIDAZOLIUM FLUOROCHROMATE IN AQUEOUS ACETIC ACID MEDIUM

A. Elavarasan, J. Dharmaraja*, M. Mohanraja and B. Harikrishnan

ABSTRACT

The oxidation of 2-amino-4-(methylthio) butanoic acid by benzimidazolium fluorochromate (BIFC) were studied in aqueous acetic acid medium in the presence of perchloric acid. The reaction is first order with respect to BIFC and fractional order dependence with respect to methionine and perchloric acid concentrations. The reaction rate were determined at different temperatures and the activation parameters were computed. The reaction rate decreases with increasing mole fraction of acetic acid in the mixture and specific solvent-solvent-solute interactions were found to predominate. From Kamlet-Taft LSER equation a suitable solvation model also proposed for this oxidation reaction.

Keywords: Kinetics, oxidation, 2-amino-4-(methylthio) butanoic acid, chromium (VI).


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