4-[(Anthracen-9-ylmethylidene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

Abstract

In the title compound, C26H21N3O, the phenyl ring of the 4-aminoantipyrine group and the heterocyclic five-membered ring along with its substituents, except for the N-bound methyl group (r.m.s. deviation = 0.0027 Å), form a dihedral angle of 54.20 (5)°. Two S(6) ring motifs are formed due to intramolecular C—H...N and C—H...O hydrogen bonds. In the crystal, molecules are linked into supramolecular chains along the a-axis direction via C—H...O contacts.