Catena-Poly[[tetraaqua[trans-1,2-bis(4-pyridyl)ethene-K2N: N′]nickel(II)]dinitrate]

Abstract

In the title compound, {[Ni(C12H10N 2)(H2O)4](NO3)2} n , the NiII ion, lying on a crystallographic inversion center, has a distorted octa-hedral coordination sphere comprising four water ligands and two N-atom donors from the trans-related 1,2-bis-(4-pyrid-yl)ethene ligands, which also have crystallographic inversion symmetry. These ligands bridge the Ni II complex units, forming chains extending along the [110] and [ 10] directions. The nitrate counter-anions stabilize the crystal structure through water-nitrate O - H⋯O hydrogen bonds.