Acta Cryst. (2008). E64, o1664  [ doi:10.1107/S1600536808024112 ]

(±)-trans-3-Benzoylbicyclo[2.2.2]octane-2-carboxylic acid

R. A. Lalancette, H. W. Thompson and A. P. J. Brunskill

Abstract: The title keto acid, C₁₆H₁₈O₃, displays significant twisting of all three ethylene bridges in its bicyclo[2.2.2]octane structure owing to steric interactions; the bridgehead-to-bridgehead torsion angles are 13.14 (12), 13.14 (13) and 9.37 (13)°. The compound crystallizes as centrosymmetric carboxyl dimers [OO = 2.6513 (12) Å and O-HO = 178°], which have two orientations within the cell and contain no significant carboxyl disorder.

Online 6 August 2008

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