Acta Cryst. (2008). E64, o2147  [ doi:10.1107/S1600536808032121 ]

2,7-Dibromo-9-octyl-9H-carbazole

E. Gagnon and D. Laliberté

Abstract: In the crystal structure of the title compound, C₂₀H₂₃Br₂N, the octyl chains are extended in an anti conformation and form a segregating bilayer, isolating rows of carbazole units. The carbazole moieties are engaged in offset - interactions; the smallest centroid-to-centroid distance is 4.2822 (11) Å. This offset packing motif allows the methylene group attached directly to the N atom to be involved in two short C-H interactions (Hcentroid distances = 2.96 and 2.99 Å) with an adjacent carbazole. One of the Br atoms also participates in a short contact [3.5475 (3) Å] with a symmetry-related (-x, 1 - y, -z) Br atom. This value is significantly smaller than the sum of the van der Waals radii for bromine (3.70 Å).

Online 22 October 2008

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