Dependence of cyclic voltammograms of aqueous solutions of MnTE-2-PyP on pH, ν = 0.1 V s−1, [NaCl] = 0.1 M, θ = 25 °C, (○) simulation in DigiElch. Similar behaviour has been reported previously for methyl and butyl analogues, MnTM-2-PyP and MnTnBu-2-PyP.23, 49 Redox couples shown relate to the MnIIII/MnIIP (right cycle) and the MnIV/MnIII couples (left cycle).