4-[2-(4-Chlorophenyl)hydrazinylidene]-3-methyl-1H-pyrazol-5(4H)-one
Open Access
- 17 September 2011
- journal article
- research article
- Published by International Union of Crystallography (IUCr) in Acta Crystallographica Section E Crystallographic Communications
- Vol. 67 (10) , o2670
Abstract
In the title compound, C(10)H(9)ClN(4)O, the pyrazole ring [maximum deviation = 0.014 (2) Å] forms a dihedral angle of 7.06 (14)° with the chloro-benzene ring. The mol-ecular conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R(2) (2)(16) ring motifs. The dimers are further connected by N-H⋯N hydrogen bonds, thereby forming layers lying parallel to the bc plane.Keywords
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