organic compounds
Open access
The title compound, C9H3F5O2, crystallizes as O—HO hydrogen-bonded carboxylic acid dimers that, together with C—HF interactions and OF [2.8065 (13) and 2.9628 (13) Å] and FF [2.6665 (11), 2.7049 (12) and 2.7314 (12) Å] contacts, form a sheet-like structure. The sheets are stacked via short π–π interactions [centroid–centroid distance = 4.3198 (11) Å]. An intramolecular C—HF interaction is also observed.
organic compounds
Open access
In the crystal structure of the title compound, C6H7NO2, N—HO and O—HO hydrogen bonds link the molecules, forming a zigzag array along [001] and a layer structure parallel to the ab plane.