A dinuclear manganese(II) complex with 2,6-pyridinedicarboxylate: Preparation, crystal structure and oxygen evolution activity in the presence of oxone

A dinuclear complex of Mn(II) with 2,6-pyridinedicarboxylate, [Mn2(dipic)2(H2O)6].2H2dipic, where dipic = 2,6-pyridinedicarboxylate, has been synthesized and characterized by elemental analysis, IR, EPR, electronic absorption spectroscopy, electrochemistry and single-crystal X-ray diffraction. The complex acts as an oxygen evolving complex with oxone (2KHSO5.KHSO4 .K2SO4) as primary oxidant in aqueous solution with a turnover number of ∼ 5 (mol of O2/mol of the complex).