Poly[aqua­[μ(3)-5-(2-carboxyl­atophen­yl)-1H-tetra­zolato]zinc(II)]

The title coordination polymer, [Zn(C(8)H(4)N(4)O(2))(H(2)O)](n), was prepared by the hydro­thermal reaction of zinc nitrate and 2-(1H-tetra­zol-5-yl)benzoic acid. Two types of coordinated zinc cations exist in the structure. One is tetra­hedrally coordinated by two O and two N from two ligands, the other is octa­hedrally coordinated by two N and two O from two ligands at equatorial sites and by two O atoms of water mol­ecules at axial sites, resulting in a two-dimensional framework. The crystal structure is stabilized by intra­molecular O—H⋯O and O—H⋯N hydrogen bonds.