In the title molecule, C22H18O, theo-tolyl ring is connected through a conjugated double bond. The molecule adopts anEconformation and the C—C=C—C torsion angle is 178.77 (13)°. The overall conformation may be described by the values of dihedral angles between the different planes. The terminal rings are twisted by an angle of 54.75 (8)°, while the biphenyl part is not planar, the dihedral angle between the planes of the rings being 40.65 (8)°. The dihedral angle between the benzene rings is 14.10 (7)°. There are three weak C—H...π interactions found in the crystal structure. No classic hydrogen bonds are observed.
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