Acta Cryst. (2003). E59, o1759-o1761  [ doi:10.1107/S1600536803023043 ]

The zwitterion 1-butylimidazolium-3-(n-butanesulfonate)

J. M. Pringle, C. M. Forsyth, M. Forsyth and D. R. MacFarlane

Abstract: The molecule of the title compound, C₁₁H₂₀N₂O₃S, contains a positively charged imidazolium head group and a negatively charged sulfonate tethered together by a four-carbon chain. There is weak intermolecular hydrogen bonding within the structure between the sulfonate O atoms and the H atoms of the imidazolium ring. The sulfonate group causes a twisting of the butyl chain and a decrease in the dihedral angle between the second and third carbon chain compared to the unsubstituted butyl group.

Online 23 October 2003

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