Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 9 (September 2012)


organic compounds



lh5511 scheme

Acta Cryst. (2012). E68, o2715-o2716    [ doi:10.1107/S1600536812034903 ]

Ethyl 1-phenyl-2-[4-(trifluoromethoxy)phenyl]-1H-benzimidazole-5-carboxylate

Y. K. Yoon, M. A. Ali, T. S. Choon, S. Arshad and I. A. Razak

Abstract: In the title compound, C23H17F3N2O3, an intramolecular C-H...F hydrogen bond generates an S(6) ring motif. The essentially planar 1H-benzimidazole ring system [maximum deviation = 0.021 (2) Å] forms dihedral angles of 25.00 (10) and 62.53 (11)° with the trifluoromethoxy-substituted benzene and phenyl rings, respectively. The twist of the ethyl acetate group from the least-squares plane of the 1H-benzimidazole ring system is defined by a C(=O)-O-C-C torsion angle of 79.5 (3)°. In the crystal, molecules are linked into a two-dimensional network parallel to the bc plane by weak C-H...N and C-H...O hydrogen bonds. Weak C-H...[pi] interactions also observed.


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