Acta Cryst. (2003). E59, o1835-o1837  [ doi:10.1107/S1600536803024371 ]

Ethyl 3-methyl-1-(2,4-dinitrophenyl)-1H-pyrazole-4-carboxylate

S. Etti, G. Shanmugam, M. N. Ponnuswamy, R. Sridhar, R. Murugan, P. T. Perumal and K. Ravikumar

Abstract: The title compound, C₁₃H₁₂N₄O₆, containing a dinitrophenyl ring substituted on the pyrazole ring, was obtained by a reaction of ethyl acetoacetate (2,4-dinitrophenyl)hydrazone with Vilsmeier reagent. The benzene and pyrazole rings are oriented at an angle of 35.49  (6)° with respect to each other. The packing of the molecules is controlled by intermolecular C-HO hydrogen bonds, in addition to van der Waals forces.

Online 31 October 2003

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