Towards functional models of the photosynthetic water oxidation centre: synthesis and structure of the asymmetric complex [Mn2O(O2CMe)2(bpy)2(H2O)(S2O8)]·H2O (bpy = 2,2′-bipyridine), containing coordinated H2O and S2O82–

Abstract

The asymmetric complex [Mn₂O(O₂CMe)₂(bpy)₂(H₂O)(S₂O₈)]·H₂O 1 has been prepared in good yield from oxidation of Mn(O₂CMe)₂·4H₂O by S₂O₈^2– in aqueous solution and has been characterized by elemental analysis, IR spectroscopy and X-ray crystallography; the complex possesses both terminally ligated H₂O and S₂O₈^2– groups, the latter with an exceptionally long O–O bond.