Crystal structure of 4-[(2,4-dichlorophenyl)(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methyl]-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one

Abstract

In the title compound C27H22Cl2N4O2, the pyrazol-5-ol ring makes a dihedral angle of 34.80 (11)° with the phenyl ring to which it is bound, while the pyrazolone ring is inclined at 34.34 (12)° to its attached phenyl ring. In the crystal, N—H...O and C—H...Cl hydrogen bonds link the molecules into chains along [010]. Intermolecular π–π interactions are observed between the pyrazolone ring and the phenyl ring bound to the pyrazol-5-ol ring system [centroid–centroid separation = 3.916 (2) Å].

Keywords

• crystal structure
• pyrazolone
• hydrogen bonding
• π–π interactions