Acta Cryst. (2012). E68, o2677 [ doi:10.1107/S1600536812034605 ]
Abstract: In the title compound, C20H21N3O2S, the 2,3-dihydro-1H-pyrazole ring is nearly planar (r.m.s. deviation = 0.023 Å) and forms dihedral angles of 16.96 (6) and 38.93 (6)° with the benzene and phenyl rings, respectively. The dihedral angle between the benzene and phenyl rings is 55.54 (6)°. The molecular conformation is consolidated by an intramolecular C-HO hydrogen bond, which forms an S(6) ring. In the crystal, inversion dimers linked by pairs of N-HOp (p = pyrazole) hydrogen bonds generate R22(10) loops. The dimers are linked by C-HO hydrogen bonds into sheets lying parallel to (100).
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