Kinetics of the reaction of aquomanganese(III) ions with isopropanol
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 63, 2737-2744
- https://doi.org/10.1039/tf9676302737
Abstract
The kinetics and products of the reaction of manganic ions with isopropanol have been investigated in perchlorate media at an ionic strength of 4.0 with [HClO4]= 0.5–3.7 M. One molecule of acetone is formed for every two magnanic ions which disappear. The reaction is first order in [Mn(III)], first order in [isopropanol], and insensitive to changes in acid concentration at [isopropanol]< 4 M and [Mn(III)] >2 × 10–4M. This is discussed in terms of the hydrolysis of the manganic ion and the protonation of the isopropanol, and it is suggested that the rate-determining step is the reaction of the hexa-aquomanganic ion with unprotonated isopropanol. The energy of activation and temperature-independent factor are derived for this reaction. The isotope effect suggests that hydrogen atom abstraction occurs from the αC—H bond.Keywords
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