Licai Zhu, Zhengang Zhao, Shujuan Yu
Jan 4, 2008
Citations
1
Influential Citations
3
Citations
Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
The title compound, C19H18O7, also known as chrysoobtusin, was isolated from Cassia tora L. (Leguminosae). The anthraquinone ring system is almost planar, the dihedral angle between the two benzene rings being 4.27 (4)°. The structure is stabilized by intra- and intermolecular O—H⋯O and C—H⋯O hydrogen bonds, and by weak π–π stacking interactions along the b axis, with a centroid–centroid distance between related benzene rings of 3.800 (4) Å.