organic compounds
Open access
In the title compound, C14H16O4S2, the thieno[2,3-b]thiophene ring systems are planar [maximum deviation = 0.008 (2) Å]. The molecular conformation is stabilized by intramolecular C—HO hydrogen bonds, while the crystal packing is stabilized by C—HO, C—Hπ and π–π stacking [centroid–centroid distance = 3.6605 (14) Å] interactions, which lead to supramolecular layers in the ab plane.
organic compounds
Open access
In the title compound, C15H12N2O, the phenyl ring makes a dihedral angle of 32.45 (9)° with the benzene ring of the 1,5-benzodiazepin-2-one unit. The seven-membered ring adopts a boat conformation with the methylene group as the prow and the fused benzene-ring C atoms as the stern. In the crystal, inversion dimers linked by pairs of N—HO hydrogen bonds generate R22(8) loops. The dimers are further linked by C—HO hydrogen bonds, so forming a column along the a-axis direction.