2-[(3,5-Dimethyl-1-phenyl-1<i>H</i>-pyrazol-4-yl)methylidene]indan-1,3-dione

In the title compound, C(21)H(16)N(2)O(2), the five-membered heterocyclic ring makes a dihedral angle of 47.06 (6)° with the attached benzene ring, whereas the indan-1,3-dione ring system and the benzene ring are oriented at a dihedral angle of 21.92 (7)°. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R(2) (2)(22) loops. Aromatic π-π stacking inter-actions [centroid-centroid distances = 3.8325 (12)-3.8600 (12) Å] also occur.