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In the title compound, [Zn(2)(C(10)H(2)O(8))(C(16)H(20)N(4))(H(2)O)(2)](n), the Zn(II) atom is in a distorted tetra-hedral environment, being coordinated by one N atom from a 1,4-bis-(3-pyridyl-meth-yl)piperazine (3-bpmp) ligand, two O atoms from two carboxyl-ate groups of the pyromellitate anion and one water mol-ecule. The distortion of the tetrahedral coordination may be ascribed to the hydrogen bonds between the carboxyl-ate groups and the adjacent water mol-ecules. Each Zn(II) atom links to three organic ligands and each pyromellitate ligand coordinates to four Zn(II) atoms, forming a (3,4)-connected infinite three-dimensional framework. O-H⋯N inter-actions also occur.

Poly[diaqua(μ4-benzene-1,2,4,5-tetracarboxylato)[μ2-1,4-bis(3-pyridylmethyl)piperazine]dizinc(II)]

Poly[diaqua(μ₄-benzene-1,2,4,5-tetracarboxylato)[μ₂-1,4-bis(3-pyridylmethyl)piperazine]dizinc(II)]