1,1′-[(2,3,3a,4,5,6,7,7a-Octa-hydro-1H-1,3-benzimidazole-1,3-di-yl) bis-(methyl-ene)]bis-(1H-benzotriazole)

Abstract

The cyclo-hexane ring in the title compound, C21H 24N8, adopts a chair conformation and the five-membered heterocyclic ring to which it is fused adopts a twist conformation on their common C - C bond. The substituents on the N atoms of the central five-membered heterocycle are arranged trans with respect to the central ring. The terminal benzotriazole rings are oriented at angles of 74.66 (8) and 84.18 (8)° with respect to the mean plane of the central heterocycle. The angle between the two benzotriazole rings is 30.80 (9)°. The bond lengths and angles are within normal ranges; the largest deviation from expecta-tion is for a long N - CH 2 bond length [1.476 (2) Å] as a consequence of an anomeric effect. In the crystal, mol-ecules are connected by C - H⋯N hydrogen bonds. © Rivera et al. 2011.