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Kinetics of the oxidation of aquaethylenediaminetetraacetatochromium(III) by periodate

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Summary

The kinetics of the oxidation of [CrIII(HY)(H2O)] (Y = EDTA) by IO −4 to yield CrVI have been investigated. The reaction exhibited a first-order dependence on each reactant concentration. The second-order rate constant, k2, varied with [H+] according to equation (1): 1/k2 = a + b[H+ + c[H+]2

A mechanism in which [CrIIIY(OH)2−] and H3IO 2−6 are the reactive species fitted the results. It is proposed that electrontransfer proceedsvia an inner-sphere mechanism with the hydroxo-ligand of the chromium(III) complex bridging the two reactants.

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Authors and Affiliations

  1. Department of Chemistry, University of Kuwait, Kuwait

    Nader A. Al-Jallal & Yousif Sulfab

Authors
  1. Nader A. Al-Jallal
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  2. Yousif Sulfab
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Additional information

Abstracted from the M. Sc. thesis of N. A. Al-Jallal, University of Kuwait.

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Al-Jallal, N.A., Sulfab, Y. Kinetics of the oxidation of aquaethylenediaminetetraacetatochromium(III) by periodate. Transition Met Chem 8, 51–53 (1983). https://doi.org/10.1007/BF00618799

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  • DOI: https://doi.org/10.1007/BF00618799

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