Acta Cryst. (2008). E64, o2160  [ doi:10.1107/S1600536808033837 ]

1-[3-(2,4-Dichloro-5-fluorophenyl)-5-(3-methyl-2-thienyl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone

N. Anuradha, A. Thiruvalluvar, M. Mahalinga and R. J. Butcher

Abstract: In the title molecule, C₁₆H₁₃Cl₂FN₂OS, the dihedral angle between the thiophene and benzene rings is 80.34 (12)°. The pyrazoline ring is in an envelope conformation, and the plane through the four coplanar atoms makes dihedral angles of 85.13 (9) and 6.89 (10)° with the thiophene and benzene rings, respectively. The C and O atoms of the acetyl group are nearly coplanar with the attached pyrazoline ring. In the crystal structure, inversion dimers arise from pairs of intermolecular C-HO hydrogen bonds. A short intermolecular ClS contact of 3.4250 (13) Å is also found.

Online 22 October 2008

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