catena-Poly[[aqua­(2,2′-bipyridyl)cobalt(II)]-μ-5-nitro­isophthalato]

In the crystal structure of the title compound, [Co(C(8)H(3)NO(6))(C(10)H(8)N(2))(H(2)O)](n), there are two symmetry-independent one-dimensional coordination polymers, which are approximately related by noncrystallographic inversion symmetry. Each zigzag chain is constructed from one Co(II) ion, one O-monodentate 5-nitro­isophthalate (ndc) dianion, one N,N′-bidentate 2,2′-bipyridyl ligand and one water mol­ecule. A symmetry-generated O,O′-bidentate ndc dianion completes the cobalt coordination environment, which could be described as very distorted cis-CoN(2)O(4) octa­hedral. The bridging ndc ligands result in parallel chains running along the a direction, and O—H⋯O hydrogen bonds arising from the water mol­ecules complete the structure.