Acta Crystallographica Section C

Crystal Structure Communications

Volume 64, Part 6 (June 2008)

organic compounds

hj3072 scheme

Acta Cryst. (2008). C64, o303-o305 [ doi:10.1107/S0108270108011360 ]

5-Phenyl-3,4-dihydro-2H-pyrrole: the first example of a planar monosubstituted 1-pyrroline

C. S. B. Gomes, C. A. Figueira, P. T. Gomes and M. T. Duarte

Abstract: In the title compound, C₁₀H₁₁N, the molecules assemble as pseudo-dimers through [pi] - [pi] interactions, each dimer being rotated by about 90° with respect to its neighbours. The relative positioning of the dimers and C-H [pi] interactions give, when seen along a, a supramolecular zigzag arrangement. The compound contains a planar pyrroline ring and, as a whole, its molecular conformation is also planar, which represents the first example of a totally planar 2-substituted 1-pyrroline and the simplest ever reported by X-ray diffraction.

Formula: C₁₀H₁₁N