Fluorinated Diluents- A Review

Бабаин, В. А.; Alyapyshev, M. Yu.; Ekberg, Christian; Todd, T. A.

doi:10.1080/07366299.2023.2188055

Cited by 11 publications

(9 citation statements)

References 150 publications

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“…The decrease in distribution ratios following an increase in the IL fraction in the organic phase (Figure ) might be attributed to the effect of the medium, as in the case of molecular solvents. For heterocyclic acid diamides, a decrease in the extraction efficiency is observed when less polar solvents are utilized. ,,, However, in the case of ionic liquids, we observe the opposite pattern: the values of the distribution ratio are higher for pure ionic liquids compared to the molecular solvent F-3 (dielectric constant typically around 10 for ionic liquids). Therefore, we cannot use the dielectric constant as a parameter for evaluating the extraction capabilities of our system.…”

Section: Resultsmentioning

confidence: 66%

“…18 Polar-fluorinated organic compounds are considered as prospective solvents for the extraction systems for separation An(III) and Ln(III). 19 Metanitrobenzotrifluoride (F-3) is one of the most prominent representatives of this class of solvents. It has high solubilizing ability of polar compounds, chemical, radiation, fire, and explosion resistance.…”

Section: Introductionmentioning

confidence: 99%

“…19−21 Extraction systems based on the F-3 solvent with the N,O-donor ligand are currently under active investigation. 3,9,12,19,22 Hydrophobic ionic liquids are another type of diluents that can be used in extraction systems for the separation of felements. 23−27 These compounds exhibit exceptional physicochemical properties, being nonvolatile, nonflammable, and possessing high ionic conductivity as well as the thermal and electrochemical stability.…”

Section: Introductionmentioning

confidence: 99%

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Ionic Liquid as a N,O-Donor Ligand-Based Extraction System Modifier: Establishing the Mechanism of Am(III)-Selectivity Increasing

Gerasimov,

Pozdeev,

Evsiunina

et al. 2024

Inorg. Chem.

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In this work, we studied the extraction systems for the separation f-elements based on the tetradentate N,O-donor ligand di(N-ethyl-4-ethylanilide) 2,2′-dipyridyl-6,6′-dicarboxylic acid (L). The organic phase of these systems was perspective fluorine-containing organic solvents−metanitrobenzotrifluoride (F-3), ionic liquid C 4 mimNTf 2 (IL), and their mixture. The increase of Am(III) selectivity in the presence of Ln(III) in cases of the diluent mixture was shown. The mechanism of the f-element complexation leading to the improved properties of the extraction systems was studied by UV−visible, Raman-spectroscopy, XRDstudy, and density functional theory calculations.

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Section: Resultsmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ionic Liquid as a N,O-Donor Ligand-Based Extraction System Modifier: Establishing the Mechanism of Am(III)-Selectivity Increasing

Gerasimov,

Pozdeev,

Evsiunina

et al. 2024

Inorg. Chem.

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“…For this reason, we used solvent F-3 ( meta -nitrobenzotrifluoride) to compare the ligands under the same conditions. The advantages of F-3 over classical nonpolar solvents are that it has a high explosion and fire safety in contact with nitric acid solutions and prevents forming a third phase. , …”

Section: Resultsmentioning

confidence: 99%

“…The advantages of F-3 over classical nonpolar solvents are that it has a high explosion and fire safety in contact with nitric acid solutions and prevents forming a third phase. 31,32 2.3.1. Solvent Extraction of Am(III) and Eu(III).…”

Section: Uranium(vi)mentioning

confidence: 99%

Small Cyclic Diglycolamides: Tautomerism, Solvent Extraction and Coordination with f-Elements: One Strain to Rule Them All

Kalinin,

Evsiunina,

Kalle

et al. 2023

Inorg. Chem.

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The search for new effective extractants is an important task for the management of high-level liquid waste (HLW) generated during the reprocessing of spent nuclear fuel. Here, we synthesized a series of diglycolamides with cyclic substituents for the first time. We disclosed their coordination with f-element nitrates [La(NO 3 ) 3 and UO 2 (NO 3 ) 2 ] by SC-XRD study and complexation properties toward Am(III), Ln(III), and U(VI) during solvent extraction from nitric acid solutions. Using dynamic nuclear magnetic resonance (NMR) and density functional theory (DFT) calculations, the importance of tautomerism in the extraction properties of diglycolamides was shown.

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Remarkable Effect of Stereoisomerism on the Am(III)/Ln(III) Solvent Extraction. New Ligands for Highly Efficient Separation of Americium

Petrov,

Lemport,

Evsiunina

et al. 2024

Chemistry A European J

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Two novel 1,10‐phenanthroline‐2,9‐diamide ligands were constructed based on 2‐phenylpyrrolidine and obtained as pure diastereomers. These ligands demonstrated advanced properties in liquid‐liquid extraction tests. They revealed high efficiency of americium(III) extraction alongside with the record values of selectivity in the separation of americium from light lanthanides from strongly acidic media. An abrupt increase of extraction efficiency when moving along the lanthanide series from lanthanum to lutetium was observed. The examination of the extraction behavior of pure diastereomeric forms revealed noticeable differences in their selectivity while maintaining the overall extraction trend. The explanation of the discovered patterns was elucidated by a comprehensive study of the ability of the ligands to bind lanthanide nitrates in solutions. All the data collected (UV‐vis and NMR titration, X‐ray analysis of resulting complexes, solvation numbers estimation) were supported by quantum chemical calculation. These data clearly indicated that in case of light lanthanides the formation of 1:1 complexes is most preferable. In the same time, complexes with heavy lanthanides, such as ytterbium and lutetium, exist as ionic pairs which may consist of [L2M]z+ cations counterbalanced by metallates anions, which may result in formation of unusual composition species L2M2 or even L4M5 clusters.

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Fluorinated Diluents- A Review

Cited by 11 publications

References 150 publications

Ionic Liquid as a N,O-Donor Ligand-Based Extraction System Modifier: Establishing the Mechanism of Am(III)-Selectivity Increasing

Ionic Liquid as a N,O-Donor Ligand-Based Extraction System Modifier: Establishing the Mechanism of Am(III)-Selectivity Increasing

Small Cyclic Diglycolamides: Tautomerism, Solvent Extraction and Coordination with f-Elements: One Strain to Rule Them All

Remarkable Effect of Stereoisomerism on the Am(III)/Ln(III) Solvent Extraction. New Ligands for Highly Efficient Separation of Americium

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