Acta Crystallographica Section E

Volume 67, Part 10 (October 2011)

organic compounds

 

4-[2-(4-Chlorophenyl)hydrazinylidene]-3-methyl-1H-pyrazol-5(4H)-one

H.-K. Fun, C. K. Quah, Nithinchandra and B. Kalluraya

Abstract: In the title compound, C₁₀H₉ClN₄O, the pyrazole ring [maximum deviation = 0.014 (2) Å] forms a dihedral angle of 7.06 (14)° with the chlorobenzene ring. The molecular conformation is stabilized by an intramolecular N-HO hydrogen bond, which generates an S(6) ring motif. In the crystal, inversion dimers linked by pairs of C-HO hydrogen bonds generate R₂²(16) ring motifs. The dimers are further connected by N-HN hydrogen bonds, thereby forming layers lying parallel to the bc plane.

	Hyper-Text Markup Language (HTML) file (56.0 kbytes) [ doi:10.1107/S1600536811037020/hb6405sup0.html ] Supplementary materials
	Chemical Markup Language (CML) file (4.3 kbytes) [ doi:10.1107/S1600536811037020/hb6405Isup3.cml ] Supplementary material

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