The trinuclear title compound, [Co3(CH3COO)4(C20H22N2O6)2]·2CH2Cl2, contains mixed-valence cobalt ions in the following order CoIII–CoII–CoIII where all the three cobalt ions are hexacoordinated. 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 hexacoordinated by two phenolate O atoms, two acetate O atoms and two imine N atoms. This complex contains a high-spin central CoII and two terminal low-spin CoIII i.e. CoIII(S = 0)–CoII(S = 3/2)-CoIII(S = 0). There are weak intermolecular C—HO interactions involving the methoxy groups, as well as intermolecular C—HO interactions involving the acetate anions. In addition, the dichoromethane solvate molecules are held in place by weak C—HCl interactions.