Poly[[triaqua­[μ(4)-N-(4-carboxyl­ato­phenyl)­iminodiacetato]sodium(I)zinc(II)] dihydrate]

In the title coordination polymer, {[NaZn(C(11)H(8)NO(6))(H(2)O)(3)]·2H(2)O}(n), the Zn atom is coordinated in a distorted tetra­hedral environment by three carboxyl­ate O atoms from two (4-carboxyl­atophenyl­imino)diacetate ligands and one water mol­ecule; the Na atom is in an distorted octa­hedral coordination environment formed by four carboxyl­ate O atoms from three (4-carboxyl­atophenyl­imino)diacetate ligands and two water mol­ecules. The Zn atoms and Na atoms are linked by (4-carboxyl­atophenyl­imino)diacetate ligands into a three-dimensional framework; the uncoordinated water mol­ecules fill the voids of the skeleton and stabilize it by O—H⋯O hydrogen bonds.