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Acta Cryst. (2013). E69, o834
[ doi:10.1107/S1600536813011483 ]

2-Bromo-1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-b]furan-10,11-dione

C.-P. Fan, W.-P. Yin, X.-X. Cao and J.-C. Yao

Abstract: In the title compound, C19H17BrO3, the ring skeleton is located on a crystallographic mirror plane; two C atoms of the cyclohexene ring are disordered over the two locations to satisfy the preferred ring conformation. In the crystal, C-H...O hydrogen bonds link the molecules into chains along the a axis. [pi]-[pi] stacking interactions between benzoquinone rings, with a centroid-centroid distance of 3.7225 (4) Å, are also observed, which connect the chains into a two-dimensional networkparallel to the ab plane.


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