Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 11 (November 2012)


organic compounds



fy2067 scheme

Acta Cryst. (2012). E68, o3148    [ doi:10.1107/S160053681204086X ]

(Z)-4-[(2-Amino-4,5-dichloroanilino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one

D. Zou, X. Lü, S. Zhao and X. Liu

Abstract: The molecule of the title compound, C23H18Cl2N4O, assumes a non-planar conformation in which the pyrazolone ring forms dihedral angles of 32.61 (19), 76.73 (14) and 52.57 (19)° with the three benzene rings. The secondary amino group is involved in an intramolecular N-H...O hydrogen bond. In the crystal, molecules are linked by pairs of N-H...O hydrogen bonds, forming inversion dimers. An offset stacking interaction is observed between the chloro-substituted benzene rings protruding on both sides of these dimers [centroid-centroid distance = 3.862 (1) Å].


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