title: Ethyl 2-(4-nitro-phen-yl)-1-[3-(2-oxopyrrolidin-1-yl)prop-yl]-1H-benzimidazole-5-carboxyl-ate.
abstract: In the title compound, C(23)H(24)N(4)O(5), the essentially planar benzimidazole ring system [maximum deviation = 0.008 (2) Å] forms a dihedral angle of 39.22 (7)° with the attached nitro-benzene ring. The pyrrolidin-2-one ring adopts an envelope conformation with a C atom as the flap. In the crystal, mol-ecules are connected by C-H⋯O inter-actions, forming sheets propagating in (011). The crystal packing also features weak π-π stacking inter-actions [centroid-centroid = 3.6746 (12) Å].
authors.forename: Yeong Keng
authors.initials: YK
authors.lastname: Yoon
authors.forename: Mohamed Ashraf
authors.initials: MA
authors.lastname: Ali
authors.forename: Tan Soo
authors.initials: TS
authors.lastname: Choon
authors.forename: Safra Izuani Jama
authors.initials: SI
authors.lastname: Asik
authors.forename: Ibrahim Abdul
authors.initials: IA
authors.lastname: Razak