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The asymmetric unit of the title compound, C17H12O4, consists of two independent mol­ecules. The chromen-2-one ring and the 4-methyl­benzoate side chain are inclined to one another at a dihedral angle of 64.79 (10)° in one mol­ecule and 88.3 (1)° in the other. In the crystal, mol­ecules form R22(8) centrosymmetric dimers via C—H...O hydrogen bonds. These dimers are stacked by C—H...O hydrogen bonds, resulting in R22(18) and R32(16) ring motifs. π–π stacking inter­actions between two parallel chromen-2-one rings, with centroid–centroid distances of 3.743 (1) and 3.771 (1) Å, are also present.

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In the title compound, C12H10O4, the atoms of the 2-oxo-2H-chromene ring system and the non-H atoms of the 4-substituent all lie on a crystallographic mirror plane. The mol­ecular structure exhibits an intra­molecular C—H...O hydrogen bond, which generates an S(6) ring. In the crystal, mol­ecules form R32(12) trimeric units via C—H...O inter­actions which propagate into layers parallel to the ac plane. These layers are linked by weak C—H...O inter­actions along the [010] direction, generating a three-dimensional network.
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