Acta Cryst. (2012). E68, o2777
[ doi:10.1107/S1600536812034770 ]

(Z)-4-[(3-Aminonaphthalen-2-ylamino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one

Z. Zhang, X. Lü, S. Zhao and X. Liu

Abstract: The molecule of the title compound, C₂₇H₂₂N₄O, assumes a non-planar conformation in which the pyrazolone ring forms dihedral angles of 12.73 (11), 65.17 (6) and 49.82 (6)°, respectively, with the two benzene rings and the naphthalene ring system. In the crystal, pairs of molecules are linked by intermolecular N-HN hydrogen bonds, forming dimers. The secondary amino group is involved in an intramolecular N-HO hydrogen bond.

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