Acta Cryst. (2013). E69, o111
[ doi:10.1107/S1600536812050349 ]

(E)-16-(4-Chlorobenzylidene)estrone

J. Suresh, H. Thenmozhi, V. Jeyachandran, R. R. Kumar and P. L. N. Lakshman

Abstract: In the title compound, C₂₅H₂₅ClO₂, the C ring adopts a chair conformation, while the B ring approximates a half-chair conformation. The five-membered ring D has a twist conformation on the C-C bond fused with the C ring. Aromatic rings A and E are not coplanar, as evidenced by the dihedral angle of 7.51 (1)°. In the crystal, O-HO hydrogen bonds form a double chain along the ab plane interconnected by C-HO interactions.

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