Electrochemical Study and Electrode Kinetics of Complexes of Ga(III) with Various Amino Acids

Madhu Moyal and O.D. Gupta*

Department of Chemistry, University of Rajasthan, Jaipur - 302 055 (India).

ABSTRACT:

The electroreduction of Ga(III) in the aqueous medium has been investigated at DME. The stability constants of Ga(III)-Amino acids have been evaluated by the method of DeFord and Hume's method and Kinetic parameters have been calculated by Koutecky’s method. The reduction of complexes has been found to be irreversible and diffusion controlled involving three electrons in each case. Ga(III) formed 1:1 1:2 and 1:3 complexes with these ligands. The change in thermodynamic parameters DGo, DHo and DSo have been evaluated. The mathematical Mihailov’s method has also been applied for the comparison of stability constant values obtained by graphical method.

KEYWORDS:

Alanine; asparagine; serine; D.C. polarography

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Copy the following to cite this article: Moya M, Gupta O. D. Electrochemical Study and Electrode Kinetics of Complexes of Ga(III) with Various Amino Acids. Orient J Chem 2009;25(3).

Copy the following to cite this URL: Moya M, Gupta O. D. Electrochemical Study and Electrode Kinetics of Complexes of Ga(III) with Various Amino Acids. Orient J Chem 2009;25(3). Available from: http://www.orientjchem.org/?p=23099