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Acta Cryst. (2013). E69, o1519
[ doi:10.1107/S1600536813024513 ]

2,3,4,5,6-Pentafluoro-trans-cinnamic acid

A. Navarrete, R. Somanathan and G. Aguirre

Abstract: The title compound, C9H3F5O2, crystallizes as O-H...O hydrogen-bonded carboxylic acid dimers that, together with C-H...F interactions and O...F [2.8065 (13) and 2.9628 (13) Å] and F...F [2.6665 (11), 2.7049 (12) and 2.7314 (12) Å] contacts, form a sheet-like structure. The sheets are stacked via short [pi]-[pi] interactions [centroid-centroid distance = 4.3198 (11) Å]. An intramolecular C-H...F interaction is also observed.

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