If not indicated, the data are taken from [19, 21, 22, 49, 50]. The catalysis of H2O2 dismutation was followed in 0.05 M tris buffer at (25±1) °C with Clark oxygen electrode. In case of Fe(III) porphyrins, Mn(III) salen and Mn(II) cyclic polyamines the E1/2 relates to the MIII/MII redox couple, while it relates to MIV/MIII redox couple in case of Fe(III) corrole. The catalysis of O2.− dismutation was followed in 0.05 M potassium phosphate buffer, pH 7.8 at (25±1) °C as described in references [49, 50, 83]. The kcat(H2O2) value for Fe corrole was determined at 37 °C [53], while kcat(O2.−) was measured at (25±1) °C [52].