title: A single-strand helical coordination polymer: catena-poly[[[triaquanickel(II)]-mu-2,2'-bipyridine-3,3'-dicarboxylato-kappa(3)N,N':O] monohydrate].
abstract: The asymmetric unit of the title compound, [[Ni(C(12)H(6)N(2)O(4))(H(2)O)(3)].H(2)O](n), is composed of a lattice water molecule and a nickel(II) ion that is coordinated by three water molecules and the two N atoms of a 2,2'-bipyridine-3,3'-dicarboxylate ligand. The twist of the 2,2'-bipyridine-3,3'-dicarboxylate unit and the coordination of one carboxylate group to a symmetry-related Ni(II) atom generate a helical chain that runs along the b axis. Intrahelical hydrogen bonds participate in controlling the orientation of the helices, and both right-handed and left-handed helices are connected by interhelical hydrogen bonds into two-dimensional sheets.
authors.affiliation: Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Hong-Tao
authors.initials: HT
authors.lastname: Zhang
authors.forename: Ting
authors.initials: T
authors.lastname: Shao
authors.forename: Hua-Qin
authors.initials: HQ
authors.lastname: Wang
authors.forename: Xiao-Zeng
authors.initials: XZ
authors.lastname: You
mesh_terms: D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D011108:Polymers; D015082:2,2'-Dipyridyl; D009532:Nickel