organic compounds
Open access
The asymmetric unit of the title compound, C20H24N2OS, consists of two crystallographically independent molecules. In each molecule, an intramolecular N—HO hydrogen bond forms an S(6) ring motif. The dihedral angles between the terminal benzene rings in the two molecules are 75.52 (7) and 42.80 (7)°. In the crystal, intermolecular N—HS interactions link the molecules into a chain along the c axis.
organic compounds
Open access
In the title compound, C23H17F3N2O3, an intramolecular C—HF hydrogen bond generates an S(6) ring motif. The essentially planar 1H-benzimidazole ring system [maximum deviation = 0.021 (2) Å] forms dihedral angles of 25.00 (10) and 62.53 (11)° with the trifluoromethoxy-substituted benzene and phenyl rings, respectively. The twist of the ethyl acetate group from the least-squares plane of the 1H-benzimidazole ring system is defined by a C(=O)—O—C—C torsion angle of 79.5 (3)°. In the crystal, molecules are linked into a two-dimensional network parallel to the bc plane by weak C—HN and C—HO hydrogen bonds. Weak C—Hπ interactions also observed.