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Acta Cryst. (2008). E64, o399 [ doi:10.1107/S1600536807063660 ]
Abstract: The title compound (systematic name: 4,7-methano-2,2'-spirobi[1,3-benzodioxole]), C14H14O4, is an asymmetric spiro ester of orthocarbonic acid and two diols, viz. the aromatic benzene-1,2-diol and the aliphatic vicinal norbornane-exo-cis-2,3-diol. The orthocarbonate molecule is close to having non-crystallographic Cs symmetry. The five-membered ring stemming from the aliphatic diol has an envelope conformation. C-O bonds including the spiro-C atom span an approximately 0.07 Å range, but are within 0.02 Å of the respective distances in a density functional theory calculation, i.e. the distance difference is not caused by packing forces. Accordingly, the crystal packing is characterized by weak C-H
O and C-H![[pi]](/logos/entities/pi_rmgif.gif)
interactions.
Online 9 January 2008
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