Acta Cryst. (2002). E58, o615-o617  [ doi:10.1107/S1600536802007705 ]

cis,syn,cis-2,3,4,8,9-Pentachloro-1,5,7,7-tetramethoxytricyclo[4.3.0.0^2,5]nona-3,8-diene

R. Gilardi, D. Tang and P. E. Eaton

Abstract: The title compound, C₁₃H₁₃Cl₅O₄, is a highly substituted tricyclic fused-ring diene formed when a nonachlorohomocubane slowly reacts with anhydrous sodium methoxide in tetrahydrofuran at room temperature. Four chloro substituents on the starting material are replaced by methoxy groups. In addition to this replacement, which was detected by NMR techniques, an unexpected opening of the homocubane cage was discovered by the single-crystal X-ray analysis reported herein.

Online 11 May 2002

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