2-[2-(4-Acetylphenyl)hydrazinylidene]-1,3-diphenylpropane-1,3-dione

In the title compound, C ₂₃H ₁₈N ₂O ₃, the inter-planar angle between the benzoyl units is 80.51 (6)° while the dihedral angles between the hydrazinyl-idene and benzoyl groups are 43.43 (6) and 54.16 (6)°. In the crystal, a strong resonance-assisted intra-molecular N - H⋯O hydrogen bond is observed. The molecules form an inversion dimer via a pair of weak C - H⋯O hydrogen bonds and a π-π inter-action [centroid-centroid distance of 3.5719 (10) Å]. These dimers are linked via weak C - H⋯O contacts, forming chains along the b axis.