Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 5 (May 2013)


organic compounds



zs2250 scheme

Acta Cryst. (2013). E69, o763    [ doi:10.1107/S1600536813009422 ]

rac-7-Methyl-3-[(7-methyl-4-oxochroman-3-yl)methyl]-4H-chromen-4-one

M. Somasundaram, A. Rajendiran, K. K. Balasubramanian, K. Krishnasamy and S. Kabilan

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 [pi]-[pi] stacking interactions [minimum ring centroid separation = 3.9286 (17) Å].


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