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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/113/04/0351-0359

    • Keywords

       

      Oxidation of methionine; iron(III)-phenanthroline complex

    • Abstract

       

      Kinetics and mechanism of oxidation of L-methionine by iron(III)-1,10-phenanthroline complex have been studied in perchloric acid medium. The reaction is first order each in iron(III) and methionine. Increase in [phenanthroline] increases the rate while increase in [HClO4] decreases it. While the reactive species of the substrate is the zwitterionic form, that of the oxidant is [Fe(phen)2(H2O)2]3+. The proposed mechanism leads to the rate law $$\frac{{d[Fe(phen)_3^{2 + } ]}}{{dt}} = \frac{{k_2 K_4 K_3 K_2^2 [Fe^{III} ][phen]^2 [Met]}}{{(1 + K_1 [H^ + ])([H^ + ]^{2 } + K_4 K_3 K_2^2 [phen]^2 )}} \cdot $$

    • Author Affiliations

       

      P Vani1 K Krishna Kishore1 R Rambabu2 L S A Dikshitulu2

      1. Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam - 530 003, India
      2. Gayatri Engineering College, Madurawada, Visakhapatnam - 530 041, India

    • Dates

       
      Published
      August 2001
      Manuscript received
      19 May 2001
      Manuscript revised
      2 July 2001

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