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metal-organic compounds
The complex ion of the title molecule (+)589-[Co(C2H8N2)2(C12H12N2O4)](ClO4)3, has twofold symmetry and the absolute configuration is Λ. The seven-membered chelate ring of the 4,4′-dimethoxy-2,2′-bipyridine 1,1′-dioxide ligand adopts a chiral skew conformation of δ, which forms a lel structure in the complex ion. The dihedral angle between the two pyridine rings is 61.2 (2)°, and the O—Co—O bite angle is 91.3 (2)°. The ethylenediamine chelates take a δ-gauche conformation in the complex ion.