Acta Cryst. (2008). E64, o2448 [ doi:10.1107/S1600536808039093 ]
Abstract: The asymmetric unit of the title compound, C22H22O4, consists of two independent molecules (A and B) which differ significantly in the orientations of ethyl carboxylate groups. The phenyl ring in molecule B is disordered over two orientations with occupancies of 0.55 (2) and 0.45 (2). The cyclohexenone ring of both molecules adopts an envelope conformation. The dihedral angle between the two aromatic rings is 81.12 (7)° in molecule A and 70.8 (3)° in molecule B [57.5 (4)° in the minor disorder component]. The crystal structure is stabilized by weak intermolecular C-HO hydrogen bonds and C-H interactions.
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