Cis-Diaquatetrakis(1-butyl-1H-imidazole-κN3)nickel(II) dichloride

P S Kannan,K Rajkumar,K Anbalagan,A Subbiahpandi,A S Ganeshraja

doi:10.1107/s1600536813022496

Abstract

In the title compound, [Ni(C7H12N2)4(H2O)2]Cl2, the nickel(II) ion has a distorted octahedral 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, molecules are linked via O—H⋯Cl hydrogen bonds involving one Cl− anion and the water molecule in the equatorial plane, forming an inversion dimer-like arrangement. The water molecule 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).

Highlights

In the title compound, [Ni(C7H12N2)4(H2O)2]Cl2, the nickel(II) ion has a distorted octahedral coordination environment
The water molecule in the axial position is hydrogen-bonded to both Cl anions
This paper describes the synthesis and crystal structure of the nickel(II)

Summary

Structure Reports

605 014, India, and cDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India. In the title compound, [Ni(C7H12N2)4(H2O)2]Cl2, the nickel(II) ion has a distorted octahedral 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. O—H Cl hydrogen bonds involving one Cl anion and the water molecule in the equatorial plane, forming an inversion dimer-like arrangement. The water molecule in the axial position is hydrogen-bonded to both Cl anions. There are 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)

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