Acta Cryst. (2012). E68, o3438-o3439
[ doi:10.1107/S1600536812047666 ]
Abstract: In the title molecule, C17H12O5, the chromen-2-one ring and the 4-methoxybenzoate side chain are inclined to one another at a dihedral angle of 69.82 (9)°. The crystal structure features parallel sheets of centrosymmetric R22(6) dimers joined by a C(7) chain, resulting in centrosymetric tetramers of hydrogen-bonded molecules with graph-set motif R44(40). These centrosymetric tetramers are connected by a pair of hydrogen bonds described by an R22(8) ring motif and a C(7) chain via C-HO interactions. In the structure, there are also - stacking interactions between chromene benzene and the six-membered heterocyclic rings [centroid-centroid distance = 3.691 (2) Å] and weak C=O interactions [O(ring centroid) distance = 3.357 (3) Å].
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