title: (3,3'-{(1E,1'E)-1,1'-[Ethane-1,2-diylbis(azan-1-yl-1-yl-idene-κN)]bis-(ethan-1-yl-1-yl-idene)}di-pyrazine 1-oxide-κN (4))bis-(nitrato-κO)nickel(II) monohydrate.
abstract: In the title complex, [Ni(NO3)2(C14H16N6O2)]·H2O, the Ni(II) atom, lying on a twofold rotation axis, is coordinated by a tetra-dentate 3,3'-{(1E,1'E)-1,1'-[ethane-1,2-diylbis(azan-1-yl-1-yl-idene)]bis-(ethan-1-yl-1-yl-idene)}di-pyrazine 1-oxide ligand and two mutually trans monodentate nitrate anions in a distorted o-cta-hedral geometry. The lattice water mol-ecule is located on a twofold rotation axis. The complex mol-ecules are linked by the water mol-ecules through O-H⋯O hydrogen bonds into a chain along [001]. Further C-H⋯O hydrogen bonds lead to the formation of a three-dimensional network.
authors.affiliation: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China ; Department of Chemistry, Faculty of Education, University of Khartoum, Sudan.
authors.forename: Mohammed A S
authors.initials: MA
authors.lastname: Omer
authors.forename: Jia-Cheng
authors.initials: JC
authors.lastname: Liu