3-(9H-Fluoren-9-yl)-3-(4-methyl­phen­yl)-1-phenyl­propan-1-one

In the title compound, C₂₉H₂₄O, the phenyl and methyl­phenyl rings are approximately perpendicular to each other, making a dihedral angle of 87.67 (10)°, and are oriented at dihedral angles of 62.49 (9) and 84.77 (7)°, respectively, to the nearly planar fluorene ring system [maximum deviation = 0.077 (2) Å] In the crystal, weak C—H...π inter­actions are observed.

3-(9H-Fluoren-9-yl)-1,3-diphenyl­propan-1-one

In the title compound, C₂₈H₂₂O, the fluorene ring system is approximately planar [maximum deviation = 0.044 (2) Å] and forms dihedral angles of 69.88 (6) and 89.46 (6)° with the phenyl rings. The crystal packing is stabilized by weak π–π stacking inter­actions, with centroid–centroid distances of 3.7172 (13) and 3.7827 (11) Å.