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Electrostatic and non-covalent interactions in dicationic imidazolium-sulfonium salts with mixed anions.
Journal article

Electrostatic and non-covalent interactions in dicationic imidazolium-sulfonium salts with mixed anions.

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  • 2014-03-05
Published in:
  • Chemistry (Weinheim an der Bergstrasse, Germany). - 2014
X-ray spectroscopy
dications
electrospray ionization mass spectrometry
ionic liquids
quantum-chemical calculations
English A series of thioether-functionalised imidazolium salts have been prepared and characterized. Subsequent reaction of the thioether-functionalised imidazolium salts with iodomethane affords imidazolium-sulfonium salts composed of doubly charged cations and two different anions. Imidazolium-sulfonium salts containing a single anion type are obtained either by a solvent extraction method or by anion exchange. The imidazolium-sulfonium salts undergo a methyl-transfer reaction on exposure to water, giving rise to a new, singly charged imidazolium salt with iodide introduced at the 2-position of the imidazolium ring. Crystal structures of some of the imidazolium-sulfonium salts were determined by X-ray crystallography providing the topology of the interactions between the dications and the anions. Electrospray ionization mass spectrometry and quantum-chemical calculations were used to rationalise the relative strength of these interactions.
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  • English
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closed
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https://sonar.ch/global/documents/150922
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