Date Published: August 01, 2012
Publisher: International Union of Crystallography
Author(s): Huai-Ling Guo, Jia-Cheng Liu, Chao-Hu Xiao, Ting Pang, Ping Cao.
The whole molecule of the title compound, C20H18N4O4, is generated by an inversion center. The benzimidazole ring mean plane make a dihedral angle of 89.4 (8)° with the plane passing through the acetate group (COO). In the crystal, molecules are linked via weak C—H⋯O hydrogen bonds and π–π interactions [centroid–centroid distance = 3.743 (3) Å] involving inversion-related benzimidazole groups.
For related structures, see: Al-Mohammed et al. (2012 ▶); Fu & Xu (2009 ▶); Xu & Wang (2008 ▶). For the synthesis of 2,2′-bibenzimidazole, see: Tang et al. (2007 ▶).