title: Crystal structure of 4-methyl-7-prop-oxy-2H-chromen-2-one.
abstract: The asymmetric unit of the title compound, C13H14O3, contains two independent mol-ecules, A and B, that are inter-connected through an offset π-π inter-action [inter-centroid separation = 3.6087 (4) Å]. The fused benzene and pyran-2-one rings in each mol-ecule are essentially coplanar, having dihedral angles of 1.22 (12) and 1.57 (12)° for mol-ecules A and B, respectively. Similarly, the coumarin ring system and the 7-prop-oxy substituent are close to being coplanar [C-C-O-C torsion angles = 2.9 (2) and 1.4 (2)° for mol-ecules A and B, respectively]. In the crystal, the mol-ecules are connected by C-H⋯O hydrogen bonds, forming supra-molecular tapes along [100] that are linked into a three-dimensional network by C-H⋯π inter-actions, as well as by the aforementioned π-π inter-actions.
authors.affiliation: Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col. Chamilpa CP 62100, Cuernavaca Mor., México.
authors.forename: Samuel
authors.initials: S
authors.lastname: Estrada-Soto
authors.affiliation: Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col. Chamilpa CP 62100, Cuernavaca Mor., México.
authors.forename: Amanda
authors.initials: A
authors.lastname: Sánchez-Recillas
authors.affiliation: Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col. Chamilpa CP 62100, Cuernavaca Mor., México.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Navarrete-Vázquez
authors.affiliation: Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col., Chamilpa, CP 62100, Cuernavaca Mor., México.
authors.forename: Hugo
authors.initials: H
authors.lastname: Tlahuext
keywords: C—H⋯O inter­actions; coumarin derivative; crystal structure; offset π–π inter­actions