Two isomorphous imidazole (Him) complexes: [MCl2(Him)2(H2O)2] (M = Co and Ni)
Abstract
The structures of aquadichlorobis(1H-imidazole)cobalt(II), [CoCl2(Him)2(H2O)2] (Him is 1H-imidazole, C3H4N2), (I), and aquadichlorobis(1H-imidazole)nickel(II), [NiCl2(Him)2(H2O)2], (II), are isomorphous and consist of monomers with inversion symmetry. The three monodentate ligands (imidazole, chlorine and aqua), together with their symmetry equivalents, define almost perfect octahedra. Hydrogen-bonding interactions via the imidazole and aqua H atoms lead to a three-dimensional network.