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Molecules 2003, 8(2), 269-274; doi:10.3390/80200269

Crystal Structure of N,N,N’,N’-tetra-[(3,5-dimethyl-1-pyrazolyl) methyl]-para-phenylenediamine

Département de Chimie, Faculté des Sciences Dhar El Mehraz, 30000 Fès, Morocco
CEMES, CNRS, 29, rue Jeanne Marvig, 31055 Toulouse Cedex 04, France
Département de Chimie, Faculté des Sciences, 60000 Oujda, Morocco
Author to whom correspondence should be addressed.
Received: 27 May 2002 / Revised: 10 February 2003 / Accepted: 17 February 2003 / Published: 28 February 2003
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The title compound, molecular formula C30H40N10, crystallizes and exhibits a cisoidal conformation around a central p-phenylenediamine ring suggesting that this bis-tripodal ligand is highly flexible and could be accommodated by many and original metal coordinations. All four five-membered pyrazole rings are identical. The molecule presents an inversion centre that coincides with the phenyl ring centre: pyrazole rings are two-by-two equivalent. The electrostatic spatial intramolecular repulsion between N4 and N5 is probably responsible for this general arrangement. These data emphasize the basic character of nitrogens N4 and N5.
Keywords: Structure; bis-tripod; pyrazole; bis-tridentate; N-ligands; condensation; diamines; flexibility; molecular wires Structure; bis-tripod; pyrazole; bis-tridentate; N-ligands; condensation; diamines; flexibility; molecular wires
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Daoudi, M.; Larbi, N.B.; Benjelloun, D.; Kerbal, A.; Launay, J.P.; Bonvoisin, J.; Jaud, J.; Mimouni, M.; Ben-Hadda, T. Crystal Structure of N,N,N’,N’-tetra-[(3,5-dimethyl-1-pyrazolyl) methyl]-para-phenylenediamine. Molecules 2003, 8, 269-274.

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