Mechanistic insights into dioxygen activation by a manganese corrole complex: a broken-symmetry DFT study.

The Mn-oxygen species have been implicated as key intermediates in various Mn-mediated oxidation reactions. However, artificial oxidants were often used for the synthesis of the Mn-oxygen intermediates. Remarkably, the Mn(v)-oxo and Mn(iv)-peroxo species have been observed in the activation of O by Mn(iii) corroles in the presence of base (OH) and hydrogen donors.