Abstract
In the crystal structure of the title compound, C21H15BrNO2 +·CF3SO3 −, adjacent cations are linked through C—Br⋯π and π–π contacts [centroid–centroid distance = 3.744 (2) Å], and neighbouring cations and anions via C—H⋯O, C—F⋯π and S—O⋯π interactions. The acridine and benzene ring systems are oriented at a dihedral angle of 18.7 (1)°. The carboxy group is twisted at an angle of 69.3 (1)° relative to the acridine skeleton. The mean planes of adjacent acridine moieties are either parallel or inclined at an angle of 27.8 (1)° in the lattice.
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