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The molecule of the title compound, C16H14N2O3, is slightly non-planar, with a dihedral angle of 3.3 (1)° between the two benzene rings. In the crystal structure, the molecules are linked into centrosymmetric dimers by intermolecular C—H…O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The mol­ecule of the title compound, C17H16N2O3, is non-planar, with a dihedral angle of 15.3 (1)° between the two benzene rings. An intra­molecular C—H⋯O hydrogen bond forms a six-membered ring. [ABSTRACT FROM AUTHOR]

In the title compound, C13H9N3O2, the dihedral angle between the benzimidazole moiety and the benzene ring is 40.08 (6)°. The mol­ecules are linked into chains along the b axis by inter­molecular N—H⋯N hydrogen bonds. The chains are inter­linked into a two-dimensional network by C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, C19H14N2O2, the molecules are almost planar. The dihedral angle between the two aromatic ring systems is 3.67 (1)°. [ABSTRACT FROM AUTHOR]

The title compound, C21H20N4O5S, crystallizes with two mol­ecules in the asymmetric unit. The crystal structure is stabilized by a network of C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]