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Acta Cryst. (2013). E69, o1542
[ doi:10.1107/S1600536813025026 ]

9-[(E)-2-(4-Chlorophenyl)ethenyl]-3,3,6,6-tetramethyl-2,3,4,5,6,7,8,9-octahydro-1H-xanthene-1,8-dione

B.-Y. Yu, J. K. Lee, Y. S. Cho, S.-J. Min and J. C. Woo

Abstract: In the title compound, C25H27ClO3, each of the cyclohexenone rings adopts an envelope conformation, whereas the six-membered pyran ring adopts a flattened boat conformation, with the O and methine C atoms deviating from the plane of the other four atoms. The C=C double bond is in the trans conformation. In the crystal, weak C-H...O hydrogen bonds link the molecules into chains running parallel to the b axis.


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