title: (3E,5E)-1-Benzyl-3,5-bis-(2-fluoro-benzyl-idene)piperidin-4-one.
abstract: The inversion-related mol-ecules of the title compound, C(26)H(21)F(2)NO, associate into closed dimeric subunits via co-operative C-H⋯π inter-actions. Two non-classical C-H⋯O and one C-H⋯N intra-molecular hydrogen bonds are also found in the crystal structure. The piperidin-4-one ring adopts a sofa conforamtion with the 1-benzyl group in the equatorial position, and the equiplanar fluoro-phenyl substituents in the 3- and 5-positions stretched out on either side. The 1-benzyl group is disposed towards the substituent in the 6th position of the piperidin-4-one ring. The 3,5-diene units possess E configurations.
authors.forename: R S
authors.initials: RS
authors.lastname: Rathore
authors.forename: N S
authors.initials: NS
authors.lastname: Karthikeyan
authors.forename: K
authors.initials: K
authors.lastname: Sathiyanarayanan
authors.forename: P G
authors.initials: PG
authors.lastname: Aravindan