The crystal structure of the title compound, [Cu(C28H38N4O4)](ClO4)2·H2 O, shows that the CuII ion is in a distorted square-pyramidal environment. The average Cu-O and Cu-N bond lengths are 1.916(2) and 1.936(3) angstroms, respectively. Both of the morpholino rings adopt a chair conformation. Even though enough chelating centres are available to coordinate more than one metal atom, because of the steric interaction of the morpholino rings, only one Cu atom is coordinated to the ligand.