title: catena-Poly[[[diaqua-sodium]-di-μ-aqua] 2-(2-pyrid-yl)quinoline-4-carboxyl-ate].
abstract: In the title compound, [Na(H(2)O)(4)](C(15)H(9)N(2)O(2)), the Na(+) ion is coordinated by six water mol-ecules in an octa-hedral geometry. The NaO(6) octa-hedra are connected by sharing edges, forming a cationic chain along the b-axis direction. O-H⋯O and O-H⋯N hydrogen bonds link the chains and the 2-(2-pyrid-yl)quinoline-4-carboxyl-ate anions into a two-dimensional network parallel to (100).
authors.forename: Hu-Jun
authors.initials: HJ
authors.lastname: Hao
authors.forename: Cui-Wu
authors.initials: CW
authors.lastname: Lin
authors.forename: Xian-Hong
authors.initials: XH
authors.lastname: Yin
authors.forename: Fei-Long
authors.initials: FL
authors.lastname: Hu
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhuang