In the title compound, C(16)H(16)N(2)O(3), the dihedral angle between the mean planes of the aromatic ring systems is 30.90 (15)°. In the crystal structure, the mol-ecules form [010] chains by way of N-H⋯N hydrogen bonds.

The intramolecular proton transfer of 2-(2′-hydroxyvinyl)benzimidazole (HVBI) and 2-(2′-hydroxyphenyl)imidazole (HPI) in the ground state and in the 1ππ*, 1nπ*, and 3ππ* excited states has been studied at the HF/CIS/D95** level of theory. Their rotamerism reaction in the ground and 1ππ* excited states has been also analyzed. These systems are two different fragments of 2-(2′-hydroxyphenyl)benzi...

A new series of N-Mannich bases 2-Phenyl-5-benzimidazole sulfonic acid have been synthesized through amino methylation reaction with secondary amines. The two moieties were held together a methylene bridge, which comes from formaldehyde (Formalin Solution 37%) used in the reaction. Chemical structures newly compounds confirmed using FT-IR, 1HNMR and 13CNMR. Different vitro assays including Anti...

In the mol-ecule of the title compound, C(22)H(18)Cl(2)N(2)O, the planar benzimidazole ring system is oriented with respect to the phenyl and dichloro-benzene rings at dihedral angles of 12.73 (3) and 36.57 (4)°, respectively. The dihedral angle between the dichloro-benzene and phenyl rings is 29.95 (6)°. There are C-H⋯π contacts between the benzimidazole and dichloro-benzene rings, between the...

In title compound, C(15)H(14)N(2)O(2), the dihedral angle between the 3,4-dimeth-oxy-phenyl group and the benzimidazole system is 26.47 (6)°. In the crystal, neighbouring mol-ecules are linked by N-H⋯N hydrogen bonds into C(4) chains propagating along the c-axis direction. The crystal structure also features weak C-H⋯O inter-actions.

The mol-ecule of the title compound, C(31)H(29)N(3), contains a hexyl chain, a coordination unit (benzimidazole) and a functional group (carbazole). The benzimidazole ring is not coplanar with either the phenyl ring or the carbazole system, making dihedral angles of 43.26 (3) and 39.03 (2)°, respectively. The dihedral angle between the phenyl ring and the carbazole system is 24.42 (3)°. The hex...