title: 9-Benzyl-10-methyl-acridinium trifluoro-methane-sulfonate.
abstract: In the crystal structure of the title compound, C(21)H(18)N(+)·CF(3)OS(3) (-), the cations form inversion dimers through π-π inter-actions between the acridine ring systems. These dimers are further linked by C-H⋯π inter-actions. The cations and anions are connected by C-H⋯O, C-F⋯π and S-O⋯π inter-actions. The acridine and benzene ring systems are oriented at a dihedral angle of 76.8 (1)°with respect to each other. The acridine moieties are either parallel or inclined at an angle of 62.4 (1)° in the crystal structure.
authors.affiliation: Faculty of Chemistry, University of Gdańsk, J. Sobieskiego 18, 80-952 Gdańsk, Poland.
authors.forename: Damian
authors.initials: D
authors.lastname: Trzybiński
authors.forename: Beata
authors.initials: B
authors.lastname: Zadykowicz
authors.forename: Karol
authors.initials: K
authors.lastname: Krzymiński
authors.forename: Artur
authors.initials: A
authors.lastname: Sikorski
authors.forename: Jerzy
authors.initials: J
authors.lastname: Błażejowski