Acta Cryst. (2012). E68, o2314 [ doi:10.1107/S1600536812029315 ]
Abstract: In the title compound, C20H18O2, the fused-ring systems are essentially planar (r.m.s. deviations of the nine fitted atoms = 0.009 and 0.027 Å) and exhibit an orthogonal relationship [dihedral angle = 79.83 (5)°]. To a first approximation, the ketone-O atoms are directed to opposite sides of the molecule. A three-dimensional architecture arises in the crystal packing owing to C-HO, C-H and - interactions [between centrosymmetrically related benzene rings with centroid-centroid distance = 3.7647 (10) Å].
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