title: 3-[(4-Oxo-4H-thio-chromen-3-yl)meth-yl]-4H-thio-chromen-4-one.
abstract: The title mol-ecule, C19H12S2O2, lies on a twofold rotation axis. The thio-chromonone unit is essentially planar, with a maximum deviation of 0.0491 (14) Å. The dihedral angle between the thio-chromenone ring systems is 64.48 (4)°. In the crystal, there are weak π-π stacking inter-actions, with a centroid-centroid distance of 3.7147 (9) Å.
authors.affiliation: Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram, India.
authors.forename: M
authors.initials: M
authors.lastname: Somasundaram
authors.forename: S
authors.initials: S
authors.lastname: Athavan
authors.forename: K K
authors.initials: KK
authors.lastname: Balasubramanian
authors.forename: R
authors.initials: R
authors.lastname: Saiganesh
authors.forename: S
authors.initials: S
authors.lastname: Kabilan