catena-Poly[tetraaquazinc(II)-μ-benzene-1,4-dioxyacetato-κ2O:O′]

In the title complex, [Zn(1,4-BDOA)(H2O)4]n or [Zn(C10H8O6)(H2O)4]n (where 1,4-BDOA2− is the benzene-1,4-dioxy­acetate dianion), the ZnII atom and the 1,4-BDOA2− ligand build up a one-dimensional polymer chain along c. The ZnII atom, located on an inversion center, shows an octahedral coordination geometry, defined by two carboxyl O atoms of different benzene-1,4-dioxy­acetate ligands and four water mol­ecules. Adjacent ZnII atoms are bridged by bis-monodentate carboxyl­ate groups of the centrosymmetric 1,4-BDOA2− ligands, to furnish the one-dimensional chain along the c axis; the Zn⋯Zn separation within the polymer is 14.717 (3) A. A hydrogen-bonded supramolecular architecture is formed via O—H⋯O intermolecular hydrogen bonds.