1,5-Dimethyl-4-{[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylidene) (thiophen-2-yl)methyl]amino}-2-phenyl-1H-pyrazol-3(2H)-one

Abstract

In the title compound, C26H23N5O 2S, an intramolecular N -H⋯O interaction generates an S(6) ring. The essentially planar S(6) and pyrazole rings [maximum deviations = -0.0270 (14) and 0.0195 (15) Å, respectively] are nearly coplanar, making a dihedral angle of 3.94 (6)°. The S(6) ring makes dihedral angles of 23.79 (6), 78.53 (6) and 67.91 (6)° with the pyrazolone ring, the pyrazole ring and the benzene ring of antipyrine, respectively. The structure exhibits a thienylring flip disorder with occupancy factors in the ratio 0.82:0.18.