Acta Cryst. (2004). E60, o1257-o1259  [ doi:10.1107/S1600536804014898 ]

Quinolin-8-aminium toluene-4-sulfonate

G. Smith, U. D. Wermuth and P. C. Healy

Abstract: The crystal structure of the 1:1 proton-transfer compound of 8-aminoquinoline with toluene-4-sulfonic acid, viz. quinolin-8-aminium toluene-4-sulfonate, C₉H₉N₂⁺·C₇H₇O₃S^-, is different from previously characterized proton-transfer compounds of 8-aminoquinoline, in that the 8-amino group rather than the quinoline N atom is protonated. All H atoms of this aminium group are subsequently involved in intermolecular hydrogen-bonding interactions with sulfonate O-atom acceptors, linking the cationic and anionic species and forming a linear polymer structure.

Online 26 June 2004

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