Acta Cryst. (2013). E69, o763 [ doi:10.1107/S1600536813009422 ]
Abstract: In the racemic title compound, C21H18O4, the chromone ring is essentially planar [maximum deviation from the least-squares plane = 0.026 (3) Å], with a dihedral angle of 78.18 (12)° between the benzene rings of the chromanone and chromenone moieties. In the crystal, there are weak - stacking interactions [minimum ring centroid separation = 3.9286 (17) Å].
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