The structure of the dinuclear Co(II, III) mixed-valence complex [CoIICoIII(bpmp)(C6F5CO2)2](ClO4)2·C2H5OC2H5 (1) was determined by X-ray crystallography, where bpmp is 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenolate. The compound crystallizes in the triclinic space group, P1, with a = 11.1387(5), b = 11.5941(5), c = 21.7622(9)Å, α = 88.1955(13), β = 76.0524(14), γ = 79.2320(11)°, Z = 2, V = 2679.3(2)Å3. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0370 and 0.1028, respectively, for all 9437 independent reflections. The complex has a (μ-phenoxo)bis(μ-pentafluorobenzoate)dicobalt(II, III) core structure.
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