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

✍ Scribed by Godwin A. Ayoko; John Arabel

• Publisher: Springer
• Year: 1994
• Tongue: English
• Weight: 252 KB
• Volume: 19
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00161892

✦ Synopsis

The kinetics and mechanism of the reduction of MnO~ by CoW120~O 6 in aqueous HCIO4 were studied. The reaction follows the rate law:

with K, = 2.99 x 10 3tool ~dm 3 andk=2.00+0.02x 103 dm 6 mol-2 s-~ at 25 ~ C. Close agreement between kob~ and ko,~, on the basis of Marcus theory suggest an outersphere mechanism operates. Alkali metal ions catalysc the reaction in the order K + > Na + > Li + and this result has been rationalized.