Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 10 (October 2013)


organic compounds



is5298 scheme

Acta Cryst. (2013). E69, o1504-o1505    [ doi:10.1107/S1600536813023817 ]

(2R*,4R*,7S*,10R*,12R*)-3,11,13,15-Tetraoxapentacyclo[5.5.3.01,7.02,4.010,12]pentadeca-5,8-dien-14-one

G. Mehta, S. Sen and C. S. A. Kumar

Abstract: The title compound, C11H8O5, features a `skipped' diene, an anti-bis(epoxide) and a cyclic carbonate, all embedded in a densely functionalized [4.4.3]propellane scaffold. The crystal packing of this diepoxide is effected primarily by C-H...O hydrogen bonds, which link the molecules into tapes along the b axis. Inter-tape connectivity is brought about by centrosymmetrically disposed pairs of C...O contacts [3.183 (4) Å] between the C[delta]+=O[delta]- dipoles of neighbouring carbonate moieties.


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