Kinetics of periodate oxidation of <i>tris</i>-(4,4'-dimethyl-2,2'-bipyridine) iron(II) in acid medium

Abstract

The kinetics and mechanism of periodate oxidation of the complex tris-(4,4'-dimethyl-2,2'-bipyridine) iron(II) in acid medium was investigated. The complex undergoes extensive protonation in acid medium. Both protonated and the unprotonated species undergo electron transfer reaction with the active periodate species such as IO3+ and H6IO6+. The protonated species forms an ion pair with IO3- and thus suggests an outer-sphere mechanism for the reaction.