Ethyl 1-sec-butyl-2-p-tolyl-1H-benzimidazole-5-carboxyl-ate

Abstract

In the title compound, C(21)H(24)N(2)O(2), the butyl group is disordered over two orientations with refined site occupancies of 0.883 (3) and 0.117 (3). The dihedral angle between the mean plane of benzimidazole ring system and the benzene ring is 39.32 (4)° and the dihedral angle between the mean plane of carboxyl-ate group and the benzimidazole ring system is 6.87 (5)°. A weak intra-molecular C-H⋯π inter-action may have some influence on the conformation of the mol-ecule. In the crystal structure, mol-ecules are linked into infinite chains along the b axis by weak inter-molecular C-H⋯O hydrogen bonds.

Fig. 1.

The molecular structure of the title compound with atom labels and 50% probability displacement ellipsoids for non-H atoms. All disorder components are shown.

Fig. 2.

The crystal packing of the title compound, viewed along the a axis, showing one-dimensional chains along the b axis. Intermolecular hydrogen bonds are shown as dashed lines. Only the major disorder component is shown.