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(E)-4-[4-(Diethylamino)benzylideneammonio]benzenesulfonate

Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 7 (July 2012)


organic compounds



is5152 scheme

Acta Cryst. (2012). E68, o2155-o2156    [ doi:10.1107/S1600536812026402 ]

(E)-4-[4-(Diethylamino)benzylideneammonio]benzenesulfonate

P. Ruanwas, S. Chantrapromma and H.-K. Fun

Abstract: The title compound, C17H20N2O3S, synthesised from sulfanilic acid and 4-diethylaminobenzaldehyde, crystallized out as a zwitterion with the central N atom protonated. The zwitterion exists in an E conformation with respect to the C=N double bond. The dihedral angle between the benzene rings is 37.57 (5)°. In the crystal, the zwitterions are linked into a tape along the a axis by N-H...O hydrogen bonds. The crystal structure is further stabilized by weak C-H...O interactions and [pi]-[pi] interactions with a centroid-centroid distance of 3.8541 (6) Å. An O...O [2.8498 (11) Å] short contact is present.

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