| Autor: |
Gaster CB; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States., Felton DE; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States., Sweet TFM; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States., Oliver AG; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States., Latuda A; Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States., Rogers J; Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States., Burns PC; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.; Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States. |
| Abstrakt: |
Four uranyl peroxide compounds with novel structures were formed following the dissolution of studtite, [(UO 2 )(O 2 )(H 2 O) 2 ](H 2 O) 2 , in imidazolium-based ionic liquids. The compounds were characterized using single crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), Raman and infrared (IR) spectroscopy, and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS). The ionic liquids used in the experiments were 1-ethyl-3-methylimidazolium (EMIm) diethyl phosphate, EMIm ethyl sulfate, and EMIm acetate. Each of the four uranyl peroxide compounds contain components from the ionic liquids as terminal ligands on uranyl peroxide molecular units, bridging ligands in uranyl peroxide sheet structures, or charge balancing cations located in the interstitial space. The studtite dissolved in and reacted with the ionic liquids, producing unique crystal structures depending on the anionic component of the ionic liquid, the temperature at which the synthesis was performed, and the introduction of additional ionic species into the solution. This is the first report of studtite dissolving in and reacting with ionic liquids to form uranyl peroxide compounds, which has the potential to vastly increase the number of synthetic routes for the formation of uranyl peroxide clusters and uranyl peroxide cage clusters. |
