Crystal structure of di­aqua­tris­(1-ethyl-1H-imidazole-κN (3))(sulfato-κO)nickel(II)

In the title complex, [Ni(SO(4))(C(5)H(8)N(2))(3)(H(2)O)(2)], the Ni(II) ion is coordinated by three facial 1-ethyl-1H-imidazole ligands, one monodentate sulfate ligand and two water mol­ecules in a slightly distorted octa­hedral coordination environment. In the crystal, two pairs of O—H⋯O hydrogen bonds link complex mol­ecules, forming inversion dimers incorporating R (2) (4)(8), R (2) (2)(8) and R (2) (2)(12) rings. The dimeric unit also contains two symmetry-unique intra­molecular O—H⋯O hydrogen bonds. In addition, weak C—H⋯O hydrogen bonds, weak C—H⋯π inter­actions and π–π inter­actions with a centroid–centroid distance of 3.560 (2) Å combine to form a three-dimensional network. One of the ethyl groups is disordered over two sets of sites with occupancies in the ratio 0.586 (7):0.414 (7).