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

作者：Hayyan Maan^*; Mjalli Farouq S; Hashim Mohd Ali; AlNashef Inas M

来源：Journal of Molecular Liquids, 2013, 181: 44-50.

DOI：10.1016/j.molliq.2013.02.001

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

Superoxide ion (O-2(center dot-)) 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, O-2(center dot-) was generated and analyzed electrochemically using cyclic voltammetry and chronoamperometry techniques from O-2 dissolved in 1-butyl-3-methylimidazolium trifluoromethanesulfonate [BMIm][TfO]. Furthermore, O-2(center dot-) 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 O-2(center dot-) and GC/MS was used to investigate the possible reaction between the generated O-2(center dot-) and [BMIm][TfO]. The results showed that O-2(center dot-) was unstable in this IL. The GC/MS results confirmed that O-2(center dot-) 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.

• 出版日期2013-5