Abstract
The kinetics of oxidations of butane-1,4-, pentane-1,5-, and hexane-1,6-diols and of 3-methoxybutan-1-ol by aquamanganese(III) ions have been investigated in aqueous perchloric acid at constant ionic strength (4 mol dm–3). The reaction has a first-order dependence both on [MnIII] and [Substrate], but is independent of [MnII]. The rate decreases with increasing [H+] at constant ionic strength, becoming less sensitive at >3 mol dm–3 HClO4. The present rate data do not help to distinguish between inner- and outer-sphere mechanisms, although complex formation is indicated by spectrometry. A probable mechanism is suggested and the activation parameters are reported.
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