The cation in the title compound, C23H23N2+·Cl−·H2O, features a benzimidazole ring connected to two 4‐methylbenzyl rings via methylene bridges. The crystal structure is stabilized by C—H⋯O, C—H⋯Cl and O—H⋯Cl hydrogen‐bonding interactions, leading to a three‐dimensional framework.
The title compound, C31H26N2O5, is a compound with a spiro junction between β‐lactam and isatin ring systems. Its four‐ and five‐membered rings are nearly planar, with maximum deviations of −0.020 (1) and 0.050 (1) Å for their carbonyl C atoms, respectively. The dihedral angle between these two rings is 86.44 (5)°. The crystal structure is stabilized by intramolecular C—H⋯O hydrogen‐bonding and van der Waals interactions.
The title compound, C26H24N4, contains one pyrazole ring and two phenyl rings, which are nearly perpendicular to the benzimidazole ring system. In the structure, there is one intramolecular C—H⋯N hydrogen‐bonding interaction.
The title compound, [CoCl2(C11H11N3O2)2], was synthesized from 1-(but-2-enyl)-5-nitrobenzimidazole and cobalt dichloride in ethanol. The CoII atom has a distorted tetrahedral geometry, coordinated by two Cl atoms and two N atoms. The molecule is located on a twofold rotation axis, which passes through the Co atom. In the crystal structure, molecules are connected by intermolecular C—H...O hydrogen-bonding interactions.
The title compound, C20H26Cl3N3O, was synthesized from 1‐(4‐chlorobenzyl)benzimidazole and 1‐(2‐chloroethyl)pyrrolidine hydrochloride in dimethylformamide. The dihedral angle between the benzene ring and the benzimidazole ring system is 68.33 (8)°. The five‐membered pyrrolidine ring has a slightly distorted envelope conformation. The crystal structure is stabilized by O—H⋯Cl, C—H⋯Cl, N—H⋯Cl and C—H⋯O hydrogen bonds.
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