Abstract
The kinetics and mechanism of the reaction of H 2O 2 with K[Ru III-(PDTA-H)Cl]·2H 2O 1 (L = propylenediaminetetraacetic acid) and K[Ru III(HEDTA-H)Cl] 2 (L = hydroxyethylethylenediaminetriacetic acid) was studied by stopped flow spectrophotometry at pH = 3.4 and μ = 0.1 M (KCl) at various concentrations of H 2O 2 and at different temperatures. The μ-peroxo complex [Ru IVL] 2O 2 (L = PDTA 3, HEDTA 4) was found to be the final product in both cases. The formation of μ-peroxo complexes 3 and 4 was first order in H 2O 2 and Ru IIIL complex concentrations. The values of thermodynamic as well as activation parameters for the interaction of H 2O 2 with Ru IIIL complexes are reported.
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