Bis[bis(diethylenetriamine)zinc(II)] hexacyanoferrate tetrahydrate

In the crystal structure of the title compound, [Zn(C4H13N3)(2)](2)[Fe(CN)(6)]. 4H(2)O, the asymmetric unit is formed by a [Zn(dien)(2)](2+) cation (dien = diethylenetriamine, NH2CH2CH2NHCH2CH2NH2), water molecules and half of the [Fe(CN)(6)](4-) anion which is related by inversion symmetry through the Fe atom. The geometry around the Zn and Fe atoms is distorted octahedral and octahedral, respectively. Intramolecular O-H...O hydrogen bonds involving the water molecules, and intermolecular O-H...N hydrogen bonds involving the water molecules and the anions, result in an infinite chain. Intramolecular O-H...O and N-H...N, and intermolecular O-H...N, N-H...O and N-H...N hydrogen bonds form a three-dimensional framework.