[N-(3-Methoxy-2-oxidobenzylidene-κO2)threoninato-κ2O1,N](1,10-phenanthroline-κ2N,N′)copper(II) hemihydrate

In the title complex, [Cu(C12H13NO5)(C12H8N2)]·0.5H2O, the CuII ion is five-coordinated by one N atom and two O atoms from a tridentate Schiff base ligand, derived from the condensation of l-threonine and o-vanillin, and two N atoms from a 1,10-phenanthroline ligand in a distorted square-pyramidal geometry. In the crystal, intermolecular O—H...O hydrogen bonds form a one-dimensional left-handed helical structureextending parallel to [001]. The water molecule of crystallization shows half-occupancy.