9-(4-Fluoro­phen­oxy­carbon­yl)-10-methyl­acridinium trifluoro­methane­sulfonate

In the crystal structure of the title compound, C(21)H(15)FNO(2) (+)·CF(3)SO(3) (−), the cations form inversion dimers through C—H⋯O, C—F⋯π and π–π inter­actions. These dimers are further linked by π–π inter­actions. The cations and anions are connected through C—H⋯O, C—F⋯π and S—O⋯π inter­actions. The acridine and benzene ring systems are oriented at a dihedral angle of 74.1 (1)°. The carboxyl­ate group is twisted at an angle of 4.4 (1)° relative to the acridine skeleton. The mean planes of the adjacent acridine moieties are parallel or inclined at an angle of 55.4 (1)° in the crystal structure.