Acta Cryst. (2002). E58, o1408-o1410  [ doi:10.1107/S1600536802020925 ]

3,4,6-Tris(pyrazol-1-yl)pyridazine

A. J. Blake, P. Hubberstey and A. D. Mackrell

Abstract: In the structure of the title compound, C₁₃H₁₀N₈, a tetradentate N₄-donor ligand derivatized on the pyridazine backbone with a monodentate N-donor group, the four potentially coordinating N atoms of the pyridazine and 3- and 6-pyrazole rings adopt a trans-trans conformation. Although the 6-substituted pyrazole ring is almost coplanar with the pyridazine ring, the 3- and 4-substituted pyrazole rings are severely bent out of the plane of the pyridazine ring. These features suggest that it may not be possible to arrange the four adjacent N-donors such that the molecule can act as a bis-bidentate chelating ligand. An analysis of the extended structure of the title compound reveals a very short, offset face-to-face - interaction involving the pyridazine and 6-substituted pyrazole rings of adjacent molecules.

Online 22 November 2002

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