Synthesis, Crystal structure and catecholase activity of [N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane] copper(II) dichloride - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue J. Mar. Chim. Heterocycl. Année : 2004

Synthesis, Crystal structure and catecholase activity of [N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane] copper(II) dichloride

Résumé

ABSTRACT: A new tripodal ligand, N,N-Bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy- 4-aminobutane (bpmhb), has been synthetized. Reaction of (bpmhb) with Copper (II) chloride dihydrate [CuCl2, 2H2O] in methanol produced the new complex Cu(bpmhb)Cl2. The complex crystallizes in the monoclinic system, space group P21, the cell dimensions are a = 7.990 Å, b = 14.620 Å, c = 8.590 Å, α = 90°, β = 95.80°, γ = 90°, V= 998.3 Å3 and Z =2. The single-crystal X-ray structure of the title compound, N,N-Bis(3,5-dimethylpyrazol-1- ylmethyl)-1-hydroxy-4-aminobutane Copper(II) dichloride shows that the surrounding geometry of the copper (II) ion can be described as being intermediate between a distorted square pyramid and a trigonal bipyramid. The OH group function form an intramolecular hydrogen bonding with the chloride atom Cl1. With molecular oxygen as oxidant, this complex catalyzed the conversion of catechol to quinone with a good catalytic activity.
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hal-00559548 , version 1 (23-01-2015)

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  • HAL Id : hal-00559548 , version 1

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M. El Kodadi, Fouad Malek, A. Ramdani, D. Eddike, Monique Tillard, et al.. Synthesis, Crystal structure and catecholase activity of [N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane] copper(II) dichloride. J. Mar. Chim. Heterocycl., 2004, 61 (3/1), pp.45-52. ⟨hal-00559548⟩
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