There is significant interest in the catalytic activity of metallocorroles owing to their similarities to metalloporphyrins. In this study, 5,10,15-tripentafluorophenyl corrole (H3TPFC) and its manganese complex [MnIII(TPFC)] were successfully synthesized according to literature-reported methods. A manganese(V)-oxo species [MnV(TPFC)O] was generated by oxidation of the corresponding manganese(III) precursor with different oxygen sources. The kinetics of epoxidation, hydroxylation and sulfoxidation reactions by MnV(TPFC)O were investigated under pseudo-first-order conditions. Competition reactions were studied with a catalytic amount of MnIII(TPFC) and a terminal oxidant. Our studies indicate that MnV(TPFC)O reacts via a disproportionation pathway to generate a putative manganese(VI)-oxo species as the true oxidant.

Kinetic and competition studies of oxygen atom transfer reactions with a corrole-manganese(V)-oxo species

251st National Meeting (2016)

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