title: 2-Bromo-5-tert-butyl-N-methyl-N-[2-(methyl-amino)-phen-yl]-3-(1-methyl-1H-benzimidazol-2-yl)benzamide.
abstract: In the title compound, C27H29BrN4O, benzimidazole ring system and the amide moiety are planar [r.m.s. deviations = 0.016 (2) and 0.017 (1) Å, respectively]. The mol-ecule adopts a conformation in which the amide linkage is almost perpendicular to the central ring [dihedral angle = 85.79 (8)°], while the benzimidazole ring system makes a dihedral angle of 70.26 (11)° with the central ring. In the crystal, the mol-ecules form dimers through N-H⋯O hydrogen bonds and C-H⋯O interactions. These dimers are further linked into zigzag ribbons along [201] by weak C-H⋯Br inter-actions. As a result of the bulky nature of the mol-ecule, as evidenced by the large dihedral angles between rings, there is little evidence for any π-π inter-actions.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
authors.forename: Poonam Rajesh
authors.initials: PR
authors.lastname: Prasad
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
authors.forename: Shikha
authors.initials: S
authors.lastname: Das
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
authors.forename: Harkesh B
authors.initials: HB
authors.lastname: Singh
authors.affiliation: Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA.
authors.forename: Ray J
authors.initials: RJ
authors.lastname: Butcher
keywords: crystal structure