An investigation of the reaction between 1-butyl-3-methylimidazolium trifluoromethanesulfonate and superoxide ion

Maan Hayyan, Farouq S. Mjalli, Mohd Ali Hashim, Inas M. Alnashef

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Superoxide ion (O2 -) generation in ionic liquids (ILs) has been investigated recently using various types of ILs. Imidazolium based ILs are the most frequently studied ILs. In this work, O2 - was generated and analyzed electrochemically using cyclic voltammetry and chronoamperometry techniques from O2 dissolved in 1-butyl-3-methylimidazolium trifluoromethanesulfonate [BMIm][TfO]. Furthermore, O2 - was generated chemically by potassium superoxide addition into the same IL. UV/Vis spectrophotometry was utilized for testing the long term stability of the generated O2 - and GC/MS was used to investigate the possible reaction between the generated O 2 - and [BMIm][TfO]. The results showed that O 2 - was unstable in this IL. The GC/MS results confirmed that O2 - has reacted with [BMIm][TfO] producing 1-butyl-3-methyl-2-imidazolone in a high purity and excellent yield. This product and its family are used widely in various applications and have a very important role in pharmacology and chemotherapy.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalJournal of Molecular Liquids
Volume181
DOIs
Publication statusPublished - May 2013

Keywords

  • 2-Imidazolone
  • Imidazolium cation
  • Ionic liquid
  • Potassium superoxide
  • Superoxide ion
  • Trifluoromethanesulfonate anion

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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