Aqua(N,N-Diethylethylenediamine-kappa N-2,N ')(Pyridine-2,6-Dicarboxylato-kappa N-3,O,O ')Nickel(II) 2.5-Hydrate

Abstract

In the title compound, [Ni(C7H3NO4)(C6H16N2)(H2O)]·2.5H2O, the discrete neutral [Ni(dpc)(dien)(H2O)] (dien is diethyl-ethylenediamine and dpc is dipicolinate) complex lies on a mirror plane. The NiII ion is coordinated by the dpc ligand through the pyridine N atom and one O atom of each carboxyl-ate group, an aqua ligand and two N atoms of the bidentate dien ligand, forming a distorted octa-hedral geometry. One of the C atoms of the ethyl-enediamine group is disordered across the mirror plane. The symmetry-independent ethyl group is disordered over two orientations with equal occupancy. The complex mol-ecules are connected via O - H⋯O and N - H⋯O inter-molecular hydrogen-bonding inter-actions. © International Union of Crystallography 2007.