pi-stacking and C-X center dot center dot center dot center dot D (X = H, NO2; D = O, pi) interactions in the crystal network of both C-H center dot center dot center dot center dot N and pi-stacked dimers of 1,2-bis(4-bromophenyl)-1H-benzimidazole and 2-(4-bromophenyl)-1-(4-nitrophenyl)-1H-benzimidazole
Salazar Pereda, Verónica
2014
pi-stacking and C-X center dot center dot center dot center dot D (X = H, NO2; D = O, pi) interactions in the crystal network of both C-H center dot center dot center dot center dot N and pi-stacked dimers of 1,2-bis(4-bromophenyl)-1H-benzimidazole and 2-(4-bromophenyl)-1-(4-nitrophenyl)-1H-benzimidazoleJazmin E. González-Padilla, Martha C. Rosales-Hernández, Itzia I. Padilla-Martínez, Efren V. García-Báez, Susana Rojas-Lima and Veronica Salazar-Pereda, ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 2014, C70, 55-59 DOI: 10.1107/S2053229613033329.
Abstract
Molecules of 1,2-bis(4-bromophenyl)-1H-benzimidazole, C19H12Br2N2, (I), and 2-(4-bromophenyl)-1-(4-nitrophenyl)-1H-benzimidazole, C19H12BrN3O2, (II), are arranged in dimeric units through C?H...N and parallel-displaced ?-stacking interactions favored by the appropriate disposition of N- and C-bonded phenyl rings with respect to the mean benzimidazole plane. The molecular packing of the dimers of (I) and (II) arises by the concurrence of a diverse set of weak intermolecular C?X...D (X = H, NO2; D = O, ?) interactions.
