Crystal structure of poly[[aqua­(μ-2,3-di­hydro­thieno[3,4-b][1,4]dioxine-5,7-di­carboxyl­ato-κ(2) O (5):O (7))[μ-di(pyridin-4-yl)sulfane-κ(2) N:N′]zinc] 0.26-hydrate]

The crystal structure of the title polymer, {[Zn(C(8)H(4)O(6)S)(C(10)H(8)N(2)S)(H(2)O)]·0.26H(2)O}(n), is characterized by a layered arrangement parallel to the ab plane. The zinc cation is five-coordinated in a slightly distorted trigonal–bipyramidal coordination environment defined by two pyridine ligands, two carboxyl­ate groups of two thio­phene di­carboxyl­ate ligands, and by one water mol­ecule. The ethyl­ene bridge in the dioxine ligand is disordered over two sets of sites [occupancy ratio 0.624 (9):0.376 (9)]. Several hydrogen-bonding inter­actions of the types O—H⋯O, C—H⋯O, C—H⋯S and C—H⋯N ensure the cohesion within the crystal structure.