Di-μ2-acetato-diacetato-bis­{μ2-3,3′,5,5′-tetra­meth­oxy-2,2-[ethane-1,2-diylbis(nitrilo­methyl­idyne)]diphenolato}tricobalt(II,III) dichloro­methane disolvate

The trinuclear title compound, [Co(3)(CH(3)COO)(4)(C(20)H(22)N(2)O(6))(2)]·2CH(2)Cl(2), contains mixed-valence cobalt ions in the following order Co(III)-Co(II)-Co(III) where all the three cobalt ions are hexa-coordinated. The central cobalt ion is situated on an inversion centre and is in an all-oxygen environment, coordinated by four phenolate O atoms and two O atoms from bridging acetate groups, while the terminal cobalt ion is hexa-coordinated by two phenolate O atoms, two acetate O atoms and two imine N atoms. This complex contains a high-spin central Co(II) and two terminal low-spin Co(III)i.e. Co(III)(S = 0)-Co(II)(S = 3/2)-Co(III)(S = 0). There are weak inter-molecular C-H⋯O inter-actions involving the meth-oxy groups, as well as inter-molecular C-H⋯O inter-actions involving the acetate anions. In addition, the dichoromethane solvate mol-ecules are held in place by weak C-H⋯Cl inter-actions.