organic compounds
Open access
In the title Schiff-base type compound, C18H13N3O5, the central furan ring makes dihedral angles of 12.80 (7) and 51.43 (4)° with the terminal benzene rings. The dihedral angle between the benzene rings is 45.43 (3)°. In the crystal, C—HO hydrogen bonds link the molecules into layers parallel to (010). In addition, there are π–π stacking interactions within the layer [centroid–centroid distance = 3.584 (1) Å] and between the layers [centroid–centroid distance 3.751 (1) Å].
organic compounds
Open access
In the title compound, C12H10N2O3S, the dihedral angle between the benzene and thiophene rings is 43.17 (4)°. The crystal structure is devoid of any hydrogen-bonding interactions. However, π–π interactions between the benzene and thiophene rings [distance between ring centroids = 3.6850 (11) Å] stack the molecules along the a axis. The absolute structure could not be determined as the crystal studied was a racemic twin with a BASF parameter of 0.31 (6).