title: Diaqua-bis-(2-oxo-2H-chromene-3-carboxyl-ato)zinc(II).
abstract: In the title compound, [Zn(C(10)H(5)O(4))(2)(H(2)O)(2)], the Zn(II) atom lies on a crystallographic inversion center and is six-coordinated by two O atoms from water mol-ecules in the axial positions and four O atoms from two deprotonated coumarin-3-carb-oxy-late ligands in the equatorial plane, forming a slightly distorted octa-hedral coordination geometry. O-H⋯O hydrogen-bonding inter-actions involving the water mol-ecules form infinite chains parallel to [010].
authors.affiliation: College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Cui
authors.forename: Qian
authors.initials: Q
authors.lastname: Gao
authors.forename: Huan-Huan
authors.initials: HH
authors.lastname: Wang
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Ya-Bo
authors.initials: YB
authors.lastname: Xie