catena-Poly[[[μ-aqua-penta­aqua­dizinc(II)]-μ4-benzene-1,2,4,5-tetra­carboxyl­ato] dihydrate]

The asymmetric unit of the title compound, {[Zn2(C10H2O8)(H2O)6]·2H2O}n, contains two distinct Zn atoms joined by a bridging water molecule and two bridging carboxyl­ate groups belonging to distinct halves of benzene-1,2,4,5-tetra­carboxyl­ate (tbec) tetra­anionic ligands, both lying on crystallographic inversion centres. The structure of this new isopolymorphic one-dimensional coordination polymer features asymmetric bimetallic octa­hedral knots. O—H⋯O hydrogen bonds between water molecules and carboxylate O atoms help to consolidate the crystal packing