Acta Crystallographica Section C

Crystal Structure Communications

Volume 59, Part 8 (August 2003)

Acta Cryst. (2003). C59, m334-m336 [doi:10.1107/S0108270103013945]

Complexation du 2-[(5-méthylpyrazolyl)méthyle]benzimidazole par les chlorures de cuivre et de cadmium

F. Sbai, R. Regragui, E. Essassi, A. Kenz et M. Pierrot

Abstract: The structures of dichloro{2-[(5-methyl-1H-pyrazol-3-yl- [bold kappa] N²)methyl]-1H-1,3-benzimidazole-N³}copper(II), [CuCl₂(C₁₂H₁₂N₄)], and di- [bold mu] -chloro-bis(chloro{2-[(5-methyl-1H-pyrazol-3-yl-N²)methyl]-1H-1,3-benzimidazole-N³}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.

Formula: [CuCl₂(C₁₂H₁₂N₄)] et [Cd₂Cl₄(C₁₂H₁₂N₄)₂]

Online 31 July 2003


	Structure factor file (CIF format) (134.7 kbytes) Contains datablock I

	Structure factor file (CIF format) (128.3 kbytes) Contains datablock II

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