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Determination of Stability Constants of Metal(II)-Methionine and Metal(II)-Methionine-Cysteine (Binary and Mixed) Complexes with a Paper Ionophoretic Technique

  • Physical Chemistry of Solutions
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Abstract

A mixed complexation reaction of methionine and cysteine with copper(II) and cobalt(II) has been studied in solution phase using the paper electrophoretic technique at ionic strength 0.1 M and a temperature of 35°C. The binary equilibria copper(II)-methionine and cobalt(II)-methionine have also been studied, since this is prerequisite for the investigation of mixed complexes. The stability constants of copper(II)-methionine-cysteine and cobalt(II)-methionine-cysteine mixed complexes were found to be 2.80 ± 0.07 and 2.44 ± 0.11 (logarithm of stability constant values), respectively.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Natural Science, University of Guyana, P. O. Box: 101110, Georgetown, Guyana, S. America

    Brij Bhushan Tewari

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  1. Brij Bhushan Tewari
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Correspondence to Brij Bhushan Tewari.

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Tewari, B.B. Determination of Stability Constants of Metal(II)-Methionine and Metal(II)-Methionine-Cysteine (Binary and Mixed) Complexes with a Paper Ionophoretic Technique. Russ. J. Inorg. Chem. 53, 490–493 (2008). https://doi.org/10.1134/S0036023608030273

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  • DOI: https://doi.org/10.1134/S0036023608030273

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