Acta Cryst. (2004). E60, o1603-o1605  [ doi:10.1107/S1600536804018252 ]

5,6-Dichloro-1-propylbenzimidazole

R. T. Stibrany, H. J. Schugar and J. A. Potenza

Abstract: The title compound, C₁₀H₁₀Cl₂N₂, forms centrosymmetric head-to-tail face-to-face dimers with the n-propyl groups exo to the dichlorobenzimidazole groups, which are effectively planar. Within a dimer, the least-squares planes are necessarily parallel and exhibit an interplanar spacing of 3.412 (2) Å, which lies near the short end of the range (3.3-3.8 Å) generally accepted to indicate - interactions. When viewed normal to the (100) planes, the structure appears as slanted columns of dimers arranged so as to form alternating -aromatic-aliphatic- layers parallel to the (001) planes.

Online 28 August 2004

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