title: Cinnamyl 2-oxo-2H-chromene-3-carboxyl-ate.
abstract: The title compound, C(19)H(14)O(4), was prepared by the reaction of 2-oxo-2H-chromene-3-acyl chloride with cinnamic alcohol. The whole mol-ecule is not planar, the dihedral angle between the planes of coumarin and benzene rings being 13.94 (4)°, but the plane of the coumarin ring and that of the ester group are almost coplanar, making a dihedral angle of 2.9 (1)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link two mol-ecules into dimers, and π-π stacking inter-actions between inversion-related rings of the coumarin groups [centroid-centroid distance 3.8380 (15) Å with a slippage of 1.535 Å], which connect the dimers into columns extending along [010].
authors.forename: Cui-Lian
authors.initials: CL
authors.lastname: Xu
authors.forename: Nan
authors.initials: N
authors.lastname: Yang
authors.forename: Guo-Yu
authors.initials: GY
authors.lastname: Yang
authors.forename: Su-Fang
authors.initials: SF
authors.lastname: Fan
authors.forename: Cao-Yuan
authors.initials: CY
authors.lastname: Niu