Acta Cryst. (2008). E64, o2151  [ doi:10.1107/S1600536808031139 ]

1,3,4,6-Tetrachloro-7,7-bis(4-chlorophenyl)bicyclo[4.2.0]oct-3-ene-2,5-dione

H. Hu, L. Li, J.-F. Ji and Z.-G. Shen

Abstract: The title compound, C₂₀H₁₀Cl₆O₂, a quinone derivative, was obtained by the irradiation of 2,3,5,6-tetrachlorobenzoquinone and 4,4'-(ethene-1,1-diyl)bis(chlorobenzene). The six- and four-membered rings are fused in a cis configuration. The dihedral angle between them is 53.4 (3)°.

Online 22 October 2008

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