title: cis-Di-aqua-tetra-kis-(1-butyl-1H-imidazole-κN (3))nickel(II) dichloride.
abstract: In the title compound, [Ni(C7H12N2)4(H2O)2]Cl2, the nickel(II) ion has a distorted octa-hedral coordination environment. It is surrounded by three N atoms and one O atom occupying the equatorial plane, and one N and one O atom in the axial positions. The imidazole ring systems are inclined to one another with dihedral angles varying between 38.3 (4) and 74.1 (4)°. In the crystal, mol-ecules are linked via O-H⋯Cl hydrogen bonds involving one Cl(-) anion and the water mol-ecule in the equatorial plane, forming an inversion dimer-like arrangement. The water mol-ecule in the axial position is hydrogen-bonded to both Cl(-) anions. There are also a number of C-H⋯Cl hydrogen bonds present, forming a three-dimensional structure. All four alkyl chains are disordered over two positions with refined occupancy ratios of 0.395 (15):0.605 (15), 0.658 (14):0.342 (14), 0.332 (11):0.668 (11) and 0.622 (12):0.378 (12).
authors.affiliation: Department of Physics, S. M. K. Fomra Institute of Technology, Thaiyur, Chennai 603 103, India.
authors.forename: P S
authors.initials: PS
authors.lastname: Kannan
authors.affiliation: Department of Chemistry, Pondicherry University, Pondicherry 605 014, India.
authors.forename: A S
authors.initials: AS
authors.lastname: Ganeshraja
authors.affiliation: Department of Chemistry, Pondicherry University, Pondicherry 605 014, India.
authors.forename: K
authors.initials: K
authors.lastname: Rajkumar
authors.affiliation: Department of Chemistry, Pondicherry University, Pondicherry 605 014, India.
authors.forename: K
authors.initials: K
authors.lastname: Anbalagan
authors.affiliation: Department of Physics, Presidency College (Autonomous), Chennai 600 005, India ; Department of Physics, S. M. K. Fomra Institute of Technology, Thaiyur, Chennai 603 103, India.
authors.forename: A
authors.initials: A
authors.lastname: Subbiahpandi