Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 4 (April 2013)

organic compounds

Acta Cryst. (2013). E69, o589-o590    [ doi:10.1107/S1600536813007642 ]


A. Oukhrib, A. Benharref, M. Saadi, M. Berraho and L. El Ammari

Abstract: The title compound, C16H25Cl2N, was synthesized from [beta]-himachalene (3,5,5,9-tetra­methyl-2,4a,5,6,7,8-hexa­hydro-1H-benzocyclo­heptene), which was isolated from the essential oil of the Atlas cedar (Cedrus Atlantica). The mol­ecule is built up from fused six- and seven-membered rings linked to two three-membered rings. The six-membered ring shows a half-chair conformation, whereas the seven-membered ring displays a boat conformation. The dihedral angle between the mean planes through the six- and seven-membered rings is 59.8 (2)°. The two three-membered rings lie to one side and each is nearly perpendicular to the six-membered ring, forming dihedral angles of 83.2 (2) and 86.0 (2)°. The absolute structure was established unambiguously from anomalous dispersion effects. No specific inter­molecular inter­actions are noted in the crystal structure.

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