Acta Cryst. (2013). E69, o1283 [ doi:10.1107/S1600536813019697 ]
Abstract: The title compound, C16H22Br2Cl2, 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 molecule is built up from fused six- and seven-membered rings and an appended three-membered ring. The six-membered ring has a half-chair conformation, whereas the seven-membered ring displays a chair conformation. The dihedral angle between the two best plane through each ring is 59.5 (2)°. No specific intermolecular interactions were discerned in the crystal packing.
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