hydrazinium cobalt glycinate

[CoBr2(α-picoline N-oxide)2]

[CoCl(H2O)(guanine)(H2NC5H2N4O)]*NH3*C2H5OH

Co2Cl4(3,5-dimethyl-1-thiocarboxamide pyrazole)2

Co(pyridine-2,6-dicarboxylate)(isonicotinamide)(H2O)2