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In the title compound, [Cu(C 8 H 4 NO 6 ) 2 (C 13 H 14 N 2 )]  n  , the square-planar coordinated Cu II  ion lies on an inversion centre and is coordinated by two protonated 5-nitro­isophthalate ligands. The Cu II  ions are linked into a one-dimensional coordination polymer by tethering 1,3-di-4-pyridylpropane ligands, whose central methyl­ene C atoms are situated on twofold rotation axes. The chains are oriented parallel to the  c  axis, and stack into a supra­molecular three-dimensional structure through O—H⋯O hydrogen-bonding inter­actions.

catena-Poly[[bis(3-carboxy-5-nitrobenzoato-κO1)copper(II)]-μ-1,3-di-4-pyridylpropane-κ2N:N′]

catena-Poly[[bis(3-carboxy-5-nitrobenzoato-κO¹)copper(II)]-μ-1,3-di-4-pyridylpropane-κ²N:N′]