Acta Cryst. (2013). E69, o739 [ doi:10.1107/S1600536813010040 ]
Abstract: The title compound, C17H24Br2Cl2, was synthesized from -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 asymmetric unit contains two independent molecules. Each molecule is built up from fused six-, seven- and two three-membered rings. In both molecules, the six-membered ring has a half-chair conformation, whereas the seven-membered ring displays a boat conformation. No specific intermolecular interactions are noted in the crystal packing.
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