Acta Cryst. (2012). E68, o87-o88  [ doi:10.1107/S1600536811052391 ]

Ethyl 2-(4-hydroxy-3-methoxyphenyl)-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-benzimidazole-5-carboxylate monohydrate

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

Abstract: In the title compound, C₂₄H₂₇N₃O₅·H₂O, the essentially planar benzimidazole ring system [maximum deviation = 0.020 (1) Å] forms dihedral angles of 54.10 (11) and 67.79 (6)°, respectively, with the mean plane of pyrrolidin-2-one ring and the benzene ring. The pyrrolidin-2-one ring adopts an envelope conformation with one of the methylene C atoms at the flap. An intramolecular C-H interaction is observed. In the crystal, O-HO and O-HN hydrogen bonds link the two components into a double-tape structure along the a axis. The crystal packing is further stabilized by weak - stacking [centroid-centroid distance = 3.6632 (9) Å] and C-HO interactions.

Online 10 December 2011

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