Chain and ring motifs in 4-carboxyphenyl­ammonium trifluoro­acetate

In the title compound, C7H8NO2+·C2F3O2−, the carboxyl plane of the cation is twisted out of the plane of the aromatic ring. The cations form C(8) chains through 'head-to-tail' N—H⋯O hydrogen-bonding inter­actions. These chains form a sheet-like structures, separated by an inter­layer distance of 3.388 (2) A. Furthermore, cations and anions form R42(8) and R44(24) ring motifs through N—H⋯O and O—H⋯O hydrogen bonds.