Journal of the Chemical Society Chemical Communications · 1981 · 13 citations · 0 references
Natural SciencesBiochemistryChemistryInorganic ChemistryOrganometallic ChemistryRedox BiochemistryBioinorganic ChemistryElectron Transfer ReactionsOxidation-reduction ReactionsReactive Oxygen SpeciesRedox ChemistryRedox ProcessesElectron TransferIntramolecular Electron TransferManganese ChemistryManganese Oxidation StateManganese Redox Chemistry
In the solid state the dioxygen adduct of manganese 4,4′,4″,4‴-tetrasulphonated phthalocyanine (MnTsPc) is best formulated as MnIIITsPcO2– and in solution the e.s.r. spectrum as a function of pH indicates hat there is an intramolecular electron transfer between MnIITsPcO2–; the superoxide is only stable between a pH of ca. 11.5 and 13.5 and evidence of oxidase activity is observed at pH > ca 14.