title: An unusual P3 1 2 framework for the Ni(4,4'-bipyridine)(H2O)4 chain.
abstract: catena-Poly[[[tetraaquanickel(II)]-mu-4,4'-bipyridine-kappa(2)N:N'] thiosulfate dihydrate], {[Ni(C(10)H(8)N(2))(H(2)O)(4)]S(2)O(3).2H(2)O}(n), (I), and catena-poly[[[tetraaquanickel(II)]-mu-4,4'-bipyridine-kappa(2)N:N'] sulfate methanol solvate monohydrate], {[Ni(C(10)H(8)N(2))(H(2)O)(4)]SO(4).CH(4)O.H(2)O}(n), (II), are built up of {[Ni(4,4'-bipy)(H(2)O)(4)](2+)}(n) chains (4,4'-bipy is 4,4'-bipyridine) interwoven in an unusual P3(1) fashion. Voids are filled by the corresponding counter-anions and solvate molecules, defining a complex three-dimensional network surrounding them. In both structures, the cationic chains evolve around a set of twofold axes passing through the Ni(II) ions and bisecting the aromatic amines through their N (and their opposite C) atoms.
authors.affiliation: Universidad Nacional de la Patagonia, Sede Puerto Madryn, 9120 Puerto Madryn, Chubut, Argentina. undiaz@cenpat.edu.ar
authors.forename: M Enriqueta
authors.initials: ME
authors.lastname: Díaz de Vivar
authors.forename: Sergio
authors.initials: S
authors.lastname: Baggio
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio