In the crystal structure of the title compound, [Co(H2O)6][Cu(C12H11N2O5)]2·6H2O, the CoII atom is located on an inversion center and coordinated by six water molecules in a slightly distorted octahedral geometry. The CuII atom is chelated by the Schiff base ligand in a distorted CuN2O2 square-planar geometry. An extensive O—H
O hydrogen-bonding network is present in the crystal structure.
O hydrogen-bonding network is present in the crystal structure.

