2-(Di­phenyl­methyl­idene)-2,3-di­hydro-1H-inden-1-one

In the title mol­ecule, C₂₂H₁₆O, the indanone ring system is approximately planar with a dihedral angle between the fused rings of 5.13 (14)°. Two benzene rings are linked together at one side of a double bond, sitting on either side of the indanone ring system and making dihedral angles of 70.30 (12) and 44.74 (13)° with it. In the crystal, hydrogen bonding is not present, but weak C—H...π or π–π inter­actions occur and mol­ecules form a sheet-like structure in the bc plane.