Seven o-aminophenol ligands based on aniline and m-phenylenediamine, which act as mono-and di-nucleating non-innocent ligands, respectively, together with their seven Mn (IV)- complexes, 1–7 are described. One of them, 1, is dinuclear and 2–7 are mononuclear, in which the ligands are coordinated in their oxidized o-iminobenzosemiquinone radical forms. The crystal structures of 1 and 3 were determined by X-ray diffraction and the electronic ...