Demonstration of Chemisorption of Carbon Dioxide in 1,3-Dialkylimidazolium Acetate Ionic Liquids


  • H.R. is grateful to the Spanish Ministry of Science and Innovation for support through the “Ramón y Cajal” program. We also thank Dr. Roland Fischer for providing crystallographic data.


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Real chemistry: Spectroscopic and crystallographic analyses confirm the chemical reaction of CO2 with carbene present in 1,3-dialkylimidazolium acetate ionic liquids and the supporting role of the acetate ion. When CO2 was bubbled through [C2mim][OAc], formation of the corresponding imidazolium carboxylate, [C2mim+-COO], could be observed.