Research Article: 1-Methyl-2-({[(1-methyl-1H-benzimid­azol-2-yl)meth­yl](phen­yl)amino}­meth­yl)1H-benzimidazol-3-ium picrate

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Bin Liu, Fan Kou, Fei Jia, Jingkui Yuan, Huilu Wu.

http://doi.org/10.1107/S1600536811024275

Abstract

In the title molecular salt, C24H24N5+·C6H2N3O7−, the dihedral angle between the benzimidazole rings of the cation is 5.041 (2)°. In the anion, the three nitro groups make dihedral angles of 2.468 (3), 12.795 (3) and 24.958 (4)° with respect to the central ring. In the crystal, weak aromatic π–π stacking [centroid–centroid distance = 3.599 (15) Å] consolidates the packing. In addition, an intra­molecular N—H⋯N hydrogen bond is observed.

Partial Text

For background to proton-transfer compounds, see: Aghabozorg et al. (2008 ▶) and to benzimidazoles, see: Ram et al. (1992 ▶). For the biological activivity of benzimidazoles, see: Baraldi et al. (2004 ▶); Göker et al. (2002 ▶); Jayasekera et al. (2005 ▶); Starčević et al. (2007 ▶).

Source:

http://doi.org/10.1107/S1600536811024275