Acta Cryst. (2011). E67, o1144  [ doi:10.1107/S1600536811013389 ]

3-Acetyl-5-hydroxy-2-methylanthra[1,2-b]furan-6,11-dione

R. Ahmad, M. F. Jeinie, N. H. Ismail, H. Hazni and S. W. Ng

Abstract: The asymmetric unit of the title compound, C₁₉H₁₂O₅, contains two independent molecules, both slightly buckled along an axis passing through the C=O bonds of the anthraquinone ring system (r.m.s. deviation of non-H atoms = 0.082 and 0.148 Å): the benzene rings are twisted to each other by 4.3 (3)°in one molecule and 10.6(3)° in the other. In both molecules, the hydroxy group forms an intramolecular O-HO hydrogen bond. The two independent molecules interact by - stacking with a centroid-centroid distance of 3.539 (2) Å between hydroxybenzene rings of adjacent molecules.

Online 16 April 2011

Copyright © International Union of Crystallography
IUCr Webmaster