K Krishna Kishore
Articles written in Journal of Chemical Sciences
Volume 113 Issue 4 August 2001 pp 351-359
Mechanism of oxidation of L-methionine by iron(III)-1,10-phenanthroline complex — A kinetic study
P Vani K Krishna Kishore R Rambabu L S A Dikshitulu
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 $$\frac{{d[Fe(phen)_3^{2 + } ]}}{{dt}} = \frac{{k_2 K_4 K_3 K_2^2 [Fe^{III} ][phen]^2 [Met]}}{{(1 + K_1 [H^ + ])([H^ + ]^{2 } + K_4 K_3 K_2^2 [phen]^2 )}} \cdot $$
Volume 117 Issue 4 July 2005 pp 329-332
Kinetics and mechanism of oxidation of glycine by iron(iii)-1,10-phenanthroline complex in perchloric acid medium
T V N Partha Sarathi A Kalyan Kumar K Krishna Kishore P Vani
Kinetics and mechanism of oxidation of glycine by iron (III)-1,10-phenanthroline complex has been studied in perchloric acid medium. The reaction is first order with respect to iron(III) and glycine. An increase in (phenanthroline) increases the rate, while increase in [H+] decreases the rate. Hence it can be inferred that the reactive species of the substrate is the zwitterionic form and that of the oxidant is [Fe(phen)2(H2O)2]3+. The proposed mechanism leads to the rate law as elucidated.
Volume 132, 2020
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