2-(1H-Benzimidazol-1-yl)-1-(2-furyl)ethanone O-isopropyloxime

In the molecule of the title compound, C16H17N3O2, the planar benzimidazole ring system [maximum deviation = 0.015 (2) Å] is oriented at a dihedral angle of 72.17 (4)° with respect to the furan ring. An intramolecular C—H⋯O interaction results in the formation of a six-membered ring having an envelope conformation. In the crystal structure, intermolecular C—H⋯N interactions link the molecules into centrosymmetric R 2 2(18) dimers.

In the molecule of the title compound, C 16 H 17 N 3 O 2 , the planar benzimidazole ring system [maximum deviation = 0.015 (2) Å ] is oriented at a dihedral angle of 72.17 (4) with respect to the furan ring. An intramolecular C-HÁ Á ÁO interaction results in the formation of a six-membered ring having an envelope conformation. In the crystal structure, intermolecular C-HÁ Á ÁN interactions link the molecules into centrosymmetric R 2 2 (18) dimers.
In our earlier studies, we reported X-ray structures of benzimidazole substituted oxiconazole derivatives (Özel Güven et al., 2007a;2007b;2009). Now, we report herein the crystal structure of the title alkyl oxime ether.
In the molecule of the title compound ( Fig. 1), the bond lengths and angles are generally within normal ranges. The planar benzimidazole ring system [with a maximum deviation of 0.015 (2) Å for atom C5] is oriented with respect to the furan ring at a dihedral angle of 72.17 (4)°. Atoms C8 and C9 are -0.037 (1) and 0.008 (1) Å away from the furan ring plane, respectively, while atom C8 is at a distance of -0.008 (1) Å to the benzimidazole ring plane. So, they are coplanar with the adjacent angles are narrowed. An Intramolecular C-H···O interaction (Table 1) results in the formation of a six-membered ring, (O2/N3/C9-C11/H11), having envelope conformation with atom H11 displaced by -0.126 (15) Å from the plane of the other ring atoms.
In the crystal structure, intermolecular C-H···N interactions (Table 1)
supplementary materials sup-2 Refinement All H atoms were located from difference Fourier syntheses and refined isotropically [C-H = 0.948 (17)-1.057 (18) Å, Fig. 1. The molecular structure of the title molecule with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. Hydrogen bond is shown as dashed line.