title: Crystal structure of 3-[4-(benz-yloxy)phen-yl]-2,3-di-hydro-1H-benzo[f]chromen-1-one.
abstract: In the title compound, C26H20O3, the pyran ring has a distorted half-chair conformation and its mean plane is inclined to the naphthalene ring system, to which it is fused, by 10.79 (9)°. The dihedral angles between the napthalene unit and the benzene and phenyl rings are 54.39 (9) and 52.65 (12)°, respectively, while the benzene and phenyl rings are inclined to one another by 74.80 (14)°. There is a short C-H⋯O contact in the chromen-1-one unit. In the crystal, mol-ecules are linked by two pairs of C-H⋯O hydrogen bonds, forming inversion dimers described by graph set motifs R 2 (2)(8) and R 2 (2)(10), giving rise to chains running parallel to (101). The chains are linked via C-H⋯π inter-actions, forming sheets lying parallel to (010).
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: R
authors.initials: R
authors.lastname: Vasanthi
authors.affiliation: Department of Chemistry, Madras Christian College, Chennai-59, India.
authors.forename: D
authors.initials: D
authors.lastname: Reuben Jonathan
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: K S
authors.initials: KS
authors.lastname: Ezhilarasi
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: S
authors.initials: S
authors.lastname: Sathya
authors.affiliation: PG and Research Department of Physics, Queen Mary's College, Chennai-4, Tamilnadu, India.
authors.forename: G
authors.initials: G
authors.lastname: Usha
keywords: C—H⋯O hydrogen bonding; chalcone; chromenone; crystal structure; flavone