Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 9 (September 2012)


organic compounds



bt5992 scheme

Acta Cryst. (2012). E68, o2662-o2663    [ doi:10.1107/S1600536812034459 ]

tert-Butyl(2-hydroxyethyl)azanium 4-[(1,3-thiazol-2-ylazanidyl)sulfonyl]aniline

H. D. Arman, T. Kaulgud and E. R. T. Tiekink

Abstract: Two pairs of independent cations and anions comprise the asymmetric unit of the title salt, C6H16NO+·C9H8N3O2S2-. The cations are virtually superimposable and each exhibits a gauche disposition of the hydroxy O and ammonium N atoms [the O-C-C-N torsion angles are 55.5 (3) and 57.5 (3)°]. Significant differences are seen in the molecular structures of the anions as seen in the S-N-C-S [1.1 (3) and 32.9 (3)°] and C-S-N-C [-69.7 (2) and 91.4 (2)°] torsion angles. Despite the variations in conformation, intramolecular hypervalent S...O interactions persist in each anion [3.078 (2) and 2.8730 (19) Å]. In the crystal, supramolecular double layers are formed in the bc plane, being sustained by O-H...N, N-H...O and N-H...N hydrogen bonding. These are connected along the a axis via C-H...O interactions.


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