Abstract
In the title complex, [Ni(NO3)(2)(C14H16N6O2)]center dot H2O, the Ni-II atom, lying on a twofold rotation axis, is coordinated by a tetradentate (3,3 '-{(1E, 1 ' E)-1,1 '-[Ethane-1,2-diylbis-(azan-1-yl-1-ylidene-kN)]bis(ethan-1-yl1-ylidene)}dipyrazine 1-oxide ligand and two mutually trans monodentate nitrate anions in a distorted octahedral geometry. The lattice water molecule is located on a twofold rotation axis. The complex molecules are linked by the water molecules through O-H center dot center dot center dot O hydrogen bonds into a chain along [001]. Further C-H center dot center dot center dot O hydrogen bonds lead to the formation of a three-dimensional network.