Dramatic Changes in the Solubilities of Ions Induced by Ligand Addition in Biphasic System D2O/DNO3//[C1C4im][Tf2N]: A Phenomenological Study
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- 作者：Dariia Ternova ; Maria Boltoeva ; Laure Cointeaux ; Clotilde Gaillard ; Vitaly Kalchenko ; Valérie Mazan ; Stanislav Miroshnichenko ; Prasanta K. Mohapatra ; Ali Ouadi ; Nicolas Papaiconomou ; Maria Petrova ; Isabelle Billard
- 刊名：Journal of Physical Chemistry B
- 出版年：2016
- 出版时间：August 4, 2016
- 年：2016
- 卷：120
- 期：30
- 页码：7502-7510
- 全文大小：471K
- 年卷期：0
- ISSN：1520-5207
文摘
The solubilities of C1C4im+ and Tf2N– in nitric aqueous phases have been measured for several ligand types and concentrations (0.04 M tributylphosphine oxide, 0.05 M N,N′-dimethyl-N,N′-dibutylmalonamide, 0.10 M 1-methyl-3-[4-(dibutylphosphinoyl)butyl]-3H-imidazol-1-ium bis(trifluoromethylsulphonyl)imidate, and 1.1 M N,N-dihexyloctanamide). The data evidence a significant difference between the solubilities of the cations and anions of the ionic liquid as a consequence of several ion-exchange and/or ion-pairing mechanisms involving all ions present in the system as well as the protonation/nitric-extraction ability of the ligand.