Abstract: | The structures of dichloro{2‐(5‐methyl‐1H‐pyrazol‐3‐yl‐κN2)methyl]‐1H‐1,3‐benzimidazole‐κN3}copper(II), CuCl2(C12H12N4)], and di‐μ‐chloro‐bis(chloro{2‐(5‐methyl‐1H‐pyrazol‐3‐yl‐κN2)methyl]‐1H‐1,3‐benzimidazole‐κN3}cadmium(II)), Cd2Cl4(C12H12N4)2], show that these compounds have the structural formula ML(Cl)2]n, where L is 2‐(5‐methylpyrazolyl)methyl]benzimidazole. When M is copper, the complex is a monomer (n = 1), with a tetrahedral coordination for the Cu atom. When M is cadmium (n = 2), the complex lies about an inversion centre giving rise to a centrosymmetric dimer in which the Cd atoms are bridged by two chloride ions and are pentacoordinated. |