catena-poly[[[bis(3-hydroxynaphthalene-2-carboxylato)zinc(II)]-μ-4,4′-bipyridine-κ2N:N′] hemihydrate]

In the title complex, [Zn(C11H7O3)(2)(C10H8N2)]center dot 0.5H(2)O, each Zn-II atom is coordinated by two N atoms from two 4,40-bipyridine (bpy) ligands and two carboxylate O atoms from two 3-hydroxynaphthalene-2-carboxylate (hnc) ligands in a distorted tetrahedral geometry. The bpy ligands and Zn-II atoms form one-dimensional zigzag chains running along the c axis. The hnc ligands are located on both side of the chain. The chains are assembled into layers parallel to the bc plane, which are extended into a three-dimensional network by O - H center dot center dot center dot O hydrogen bonds and pi - pi stacking interactions.