A novel dimer of oxo-di(acetato)-bridged manganese(III) dimers complex of potential biological significance

Assembly of the tetranuclear oxomanganese(III) acetato cluster [Mn4O2(O2CMe)7(phen)2](BF4) from the dinuclear oxo-di(acetato)-bridged manganese(III) species [Mn2O(O2CMe)2(H2O)2(phen)2](BF4)2·3H2O in aqueous/acetic acid MeOH solution occurs via the new ‘dimer of dimers’ MnIII complex [Mn2O(O2CMe)3(H2O)(phen)2](BF4)·MeOH possesing an unprecedent [Mn4(μ-O)2(μ-O2CMe)4(μ-OH2…O2CMe)2] core.