title: 3,4-Di-hydro-1H-benzo[c]chromene-1,6(2H)-dione.
abstract: In the title compound, C13H10O3, the pyran-one and benzene rings are almost coplanar, making a dihedral angle of 1.9 (1)°. The cyclo-hexenone ring adopts an envelope conformation, with a methyl-ene C atom located at the flap and displaced by 0.639 (3) Å from the mean plane of the other five atoms. In the crystal, pairs of weak C-H⋯π inter-actions occur between inversion-related mol-ecules.
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Normal University, Henan 453007, People's Republic of China.
authors.forename: Liang-Yan
authors.initials: LY
authors.lastname: Cui
authors.forename: Yan
authors.initials: Y
authors.lastname: He
authors.forename: Xue-Sen
authors.initials: XS
authors.lastname: Fan