title: catena-Poly[[[triaqua-copper(II)]-μ-pyridine-2,3-dicarboxyl-ato-κN,O:O] monohydrate].
abstract: In the title compound, {[Cu(C(7)H(3)NO(4))(H(2)O)(3)]·H(2)O}(n), the Cu(II) ion is bonded to three water mol-ecules, one N,O-bidentate pyridine-2,3-dicarboxyl-ate dianion and one O-bonded symmetry-generated dianion, resulting in a distorted CuNO(5) octa-hedral geometry. The bridging ligand results in an infinite chain. A network of O-H⋯O hydrogen bonds helps to establish the crystal structure.
authors.forename: Lujiang
authors.initials: L
authors.lastname: Hao
authors.forename: Chunhua
authors.initials: C
authors.lastname: Mu
authors.forename: Binbin
authors.initials: B
authors.lastname: Kong