Research Article: 3-Benzyl-2H-chromen-2-one

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Guo-Qiang Li, Yao-Lan Li, Tao Jiang, Ren-Wang Jiang, Guo-Cai Wang.


The title compound, C16H12O2, is a coumarin which was isolated from stones of the Chinese traditional medicine Clausena lansium. The pyrone ring is almost planar, with a mean deviation of 0.0135 (4) Å. The benzene ring (A) of the benzopyrone unit forms dihedral angles of 1.82 (5) and 72.86 (2)° with the pyrone ring and the substituent benzene ring, respectively. The crystal structure is stabilized by weak π–π stacking inter­actions, with a minimum centroid–centroid distance between benzene rings of 3.6761 (7) Å.

Partial Text

For general background to the isolation of the title compound, see: Wisanu et al. (2010 ▶, 2012 ▶). For the biological activity of Clausena lansium, see: Adebajo et al. (2009 ▶).