Poly[[bis­(μ-3-amino-5-carb­oxy­benzoato-κ(2) N:O (1))diaqua­zinc] dihydrate]

The Zn(II) atom in the title polymeric compound, {[Zn(C(8)H(6)NO(4))(2)(H(2)O)(2)]·2H(2)O}(n), lies on a center of inversion and is coordinated by two amine N atoms and two carboxyl­ate O atoms from two 3-amino-5-carb­oxy­benzoate anions along with two water mol­ecules in a distorted octa­hedral geometry. The bridging nature of the anion generates a layer motif parallel to (100). Hydrogen bonds of the N—H⋯O and O—H⋯O types exist in the structure. One H atom of the coordinated water mol­ecule and one H atom of the solvent water mol­ecule are each disordered over two positions in a 1:1 ratio.