Crystal structure of 3-benzoyl-2-[(5-bromo-2-hydroxy-3-methoxybenzylidene)amino]-4,5,6,7-tetrahydrobenzo[b]thiophene

Abstract

In the cyclohexene ring of the title compound, C23H20BrNO3S, the –(CH2)4– atoms are positionally disordered [occupancy ratio = 0.753 (6):0.247 (6)]. The ring has a half-chair conformation for both the major and minor components. The dihedral angles between the mean plane of the thiophene ring and those of the benzene and phenyl rings are 35.2 (4) and 57.7 (3)°, respectively. The planes of the two aryl rings are twisted with respect to each other by 86.4 (6)°. In the molecule, there is an O—H...N hydrogen bond forming an S(6) ring motif. In the crystal, molecules are linked via C—H...O hydrogen bonds, forming chains parallel to [100].

Keywords

• crystal structure
• 2-aminothiophene
• 4,5,6,7-tetrahydrobenzo[b]thiophene
• Schiff base
• hydrogen bonding