A functional model of manganese catalase. Mass spectrometric and visible spectral evidence for {MnIV(O)}2 and MnIIMnIV(O) intermediates

Abstract

A dinuclear manganese(II) complex [Mn₂(L)(PhCO₂)₂(NCS)][L = 2,6-bis{N-[2-(dimethylamino)ethyl]iminomethyl}-4-methylphenolate(1–)] decomposes H₂O₂ catalytically indimethylformamidesolution; two oxomanganese(IV) species {Mn^IV(O)}₂ and Mn^IIMn^IV(O) are detected for the first time as intermediates in the H₂O₂ disproportionation reaction based on mass spectrometric and visible spectral studies.