endo-2,4-dibromo-3a,4,7,7a-tetrahydro-4,7-methanoindene-1,8-dione 8-ethylene acetal

Abstract

In the title compound, C12H10Br2O3, the Csp2-Br bond is found to be shorter than the Csp3-Br bond, while the bonds involving the apical C atom (the methano bridge) have distances between those observed for the corresponding bonds in the chloro-substituted compound 1,2,4,5,6,7,8,9-octachloro-10, 10-dimethoxytricyclo-[5.2.1.02,6]deca-4,8-diene-3-one [Galešić et al. (1985). Acta Cryst. C41, 1662-1664] and those observed for the corresponding bonds in similar compounds without halogen substituents.