title: catena-Poly[[[diaqua-copper(II)]-μ-quinoline-2,3-dicarboxyl-ato-κ(3)N,O(2):O(3)] monohydrate].
abstract: 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-dicarboxyl-ate ligands, and two water mol-ecules. The water mol-ecules occupy basal and apical positions of the square-pyramidal coordination polyhedron. Each quinoline-2,3-dicarboxyl-ate dianion bridges two adjacent Cu(II) ions, forming a polymeric chain along [010]. The chains are further connected via O-H⋯O hydrogen-bonding inter-actions and quinoline ring π-π inter-actions [centroid-centroid distance = 3.725 (4) Å], generating a three-dimensional structure. Lattice water mol-ecules participate in the crystal structure via O-H⋯O hydrogen bonds.
authors.affiliation: College of Sciences, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300,  People's Republic of China.
authors.forename: Qiao-Hua
authors.initials: QH
authors.lastname: Xia
authors.forename: Zhong-Fu
authors.initials: ZF
authors.lastname: Guo
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Zhi-Kun
authors.initials: ZK
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Li