[1-(4-Chlorophenyl)-5-hydroxy-3-phenyl-1H-pyrazol-4-yl](thiophen-2-yl)methanone

Abstract

In the title compound, C20H13ClN2O2S, the chlorophenyl, phenyl and thienoyl rings are oriented at dihedral angles 17.84 (7), 53.13 (8) and 34.03 (8)°, respectively, to the central pyrazole ring. An intramolecular O—H...O hydrogen bond occurs. In the crystal, pairs of bifurcated O—H...O hydrogen bonds link molecules into inversion dimers with R22(12) graph-set motifs.