title: catena-Poly[[[tetra-aqua-nickel(II)]-μ-4,4'-bipyridyl-κN:N'] 3,3'-(p-phenyl-ene)diacrylate].
abstract: In the title compound, {[Ni(C(10)H(8)N(2))(H(2)O)(4)](C(12)H(8)O(4))}(n), the Ni(II), 4,4'-bipyridyl (bipy) and 3,3'-(p-phenyl-ene)diacrylate (L(2-)) moieties are situated on inversion centres. The bipy ligands bridge Ni(II) ions into positively charged polymeric chains along [101]. The Ni(II) atom is coordinated by two N atoms from two bipy ligands and four water mol-ecules in a distorted octa-hedral geometry. L(2-) anions inter-act with the polymeric chains via O-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.
authors: College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui,  People's Republic of China.
authors: Ni-Ya
authors: NY
authors: Li