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Electron transfer at tetrahedral cobalt(II). Part V: kinetics of permanganate ion reduction (1994)

Ayoko, Godwin A. ; Arabel, John

Springer

Transition metal chemistry 19 (1994), S. 212-214

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ISSN: 1572-901X

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Summary The kinetics and mechanism of the reduction of MnO4 − by CoW12O4O6− in aqueous HC1O4 were studied. The reaction follows the rate law:-d[MnO inf4 sup− ]/dt = 5K a k[H+][MnO inf4 sup− ][CoW12O4O6−] with K a = 2.99 × 10−3mol−1 dm3 and k = 2.00 ± 0.02 × 103dm6mol−2s−1 at 25°C. Close agreement between k obs and k calc on the basis of Marcus theory suggest an outersphere mechanism operates. Alkali metal ions catalyse the reaction in the order K+ 〉 Na+ 〉 Li+ and this result has been rationalized.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00161892

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