SPECTROSCOPIC STUDIES OF THE REACTION OF SUPEROXIDE ION WITH COBALT (III) TETRA-p-TOLYLPORPHYRIN COMPLEX

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The reaction of superoxide ion, O₂^-, with chloro-5, 10, 15, 20-tetra-p-tolylporphinatocobalt (III), [Co (III) (TTP) Cl], was investigated by spectroscopic methods (UV/vis and ESR) in dimethyl sulfoxide (DMSO). Spectral data show that O₂^- does not bind to Co (III) (TTP) Cl to give the O₂^- complex, but reduces it directly to Co (II) (TTP) at room temperature.