Ethylenediammonium diaquabis(ethylenediamine-κ2N,N')zinc(II) bis(pyridine-2,6-dicarboxylato-κ3,O,N,O')zincate(II) dihydrate

In the title compound, (C2H10N2)[Zn(C2H8N2)(2)(H2O)(2)][ Zn(C7H3NO4)(2)](2) . 2H(2)O, the Zn atom (site symmetry 2/m) in the [Zn(C2H8N2)(2)(H2O)(2)](2+) cation is six-coordinated by four N atoms from bidentate ethylenediammonium molecules and two water O atoms. The Zn atom ( site symmetry 2) in the [Zn(C7H3NO4)(2)](2-) anion is six-coordinated by four O atoms and two N atoms from two tridentate pyridine-2,6-dicarboxylate ligands. An uncoordinated ethylenediammonium cation and two water molecules are also present in the structure. The crystal packing is stabilized by O - H ... O and N - H ... O hydrogen bonds, forming a three-dimensional network.