title: Tetra-aqua-bis-(pyridine-κN)nickel(II) dinitrate.
abstract: In the title compound, [Ni(C(5)H(5)N)(2)(H(2)O)(4)](NO(3))(2), the Ni(II) ion is coordinated by two N-bonded pyridine ligands and four water mol-ecules in an octa-hedral coordination mode. The asymmetric unit consists of one Ni(II) ion located on an inversion center, as well as one pyridine ligand, one nitrate anion and two water mol-ecules in general positions. In the crystal structure, the discrete complex cations and nitrate anions are connected by O-H⋯O and C-H⋯O hydrogen bonds.
authors.affiliation: Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Max-Eyth-Strasse 2, 24098 Kiel, Germany.
authors.forename: Mario
authors.initials: M
authors.lastname: Wriedt
authors.forename: Inke
authors.initials: I
authors.lastname: Jess
authors.forename: Christian
authors.initials: C
authors.lastname: Näther