Crystal structure of {6,6′-dihy­droxy-2,2′-[imino­bis­(propane-1,3-diyl­nitrilo­methanylyl­idene)]diphenolato-κ(5) O (1),N,N′,N′′,O (1′)}copper(II)

The title compound, [Cu(C(20)H(23)N(3)O(4))], crystallizes in the space group Cc with two independent mol­ecules in the asymmetric unit. The Cu(II) atoms are each coordinated by the penta­dentate Schiff base ligand in a distorted trigonal bipyramidal N(3)O(2) geometry. The equatorial plane is formed by the two phenolic O atoms and the amine N atom, while the axial positions are occupied by the two imine N atoms. In the crystal, the two independent mol­ecules are each connected into a column along the b axis through inter­molecular O—H⋯O hydrogen bonds. The two independent columns are further linked through an N—H⋯O hydrogen bond, forming a double-column structure.