catena-Poly[[[diaqua­copper(II)]-μ-quinoline-2,3-dicarboxyl­ato-κ(3) N,O (2):O (3)] monohydrate]

In the title compound, {[Cu(C(11)H(5)NO(4))(H(2)O)(2)]·H(2)O}(n), the Cu(II) ion is five-coordinated by two O atoms and one N atom of two symmetry-related quinoline-2,3-dicarboxyl­ate ligands, and two water mol­ecules. The water mol­ecules occupy basal and apical positions of the square-pyramidal coordination polyhedron. Each quinoline-2,3-dicarboxyl­ate dianion bridges two adjacent Cu(II) ions, forming a polymeric chain along [010]. The chains are further connected via O—H⋯O hydrogen-bonding inter­actions and quinoline ring π–π inter­actions [centroid–centroid distance = 3.725 (4) Å], generating a three-dimensional structure. Lattice water mol­ecules participate in the crystal structure via O—H⋯O hydrogen bonds.