1
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Verma PK, Bhattacharyya A, Samanta S, Mohapatra PK. A highly efficient in situ redox stabilization strategy for Am-Cm separation using AgBiO 3. Dalton Trans 2024. [PMID: 39078269 DOI: 10.1039/d4dt01650e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
AgBiO3 is reported for the exclusive oxidation of Am3+ → AmO2+ at near-neutral pH conditions. Literature methods of AmO2+ generation are generally two-step processes; i.e., Am3+ → AmO22+ oxidation followed by AmO22+ → AmO2+ reduction. These methods for Am3+ → AmO2+ oxidation use high temperatures (80-100 °C) and/or several reagents, causing the in situ presence of the AmO2+-complex rather than the AmO2+aq ions. This not only interferes with the much-needed Am-Cm selectivity but also limits the use of AmO2+aq in any other experimental study. The single-step Am3+ → AmO2+ oxidation in the present work using AgBiO3 is done at 25 °C in a non-complexing medium at pH ∼4, making it a first-of-its-kind report. Am-Eu and Am-Cm separation in a single contact, with a separation factor >104, was achieved using the present method, which is unprecedented among aqueous feed solutions. The AmO2+ generated using the present method under non-complexing pH conditions makes it also suitable for exploring the fundamental chemistry of the higher valent americyl ion. A complexation study using the thus-generated AmO2+ ion with acetate ion supports the concept.
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Affiliation(s)
- Parveen K Verma
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | | | - Soumen Samanta
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
| | - Prasanta K Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
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2
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Gomez Martinez D, Sperling JM, Beck NB, Wineinger HB, Brannon JP, Whitefoot MA, Horne GP, Albrecht-Schönzart TE. Comparison of Americium(III) and Neodymium(III) Monothiophosphate Complexes. Inorg Chem 2024; 63:9237-9244. [PMID: 38722713 DOI: 10.1021/acs.inorgchem.4c00869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Mixed-donor ligands, such as those containing a combination of O/N or O/S, have been studied extensively for the selective extraction of trivalent actinides, especially Am3+ and Cm3+, from lanthanides during the recycling of used nuclear fuel. Oxygen/sulfur donor ligand combinations also result from the hydrolytic and/or radiolytic degradation of dithiophosphates, such as the Cyanex class of extractants, which are initially converted to monothiophosphates. To understand potential differences between the binding of such degraded ligands to Nd3+ and Am3+, the monothiophosphate complexes [M(OPS(OEt)2)5(H2O)2]2- (M3+ = Nd3+, Am3+) were prepared and characterized by single-crystal X-ray diffraction and optical spectroscopy and studied as a function of pressure up to ca. 14 GPa using diamond-anvil techniques. Although Nd3+ and Am3+ have nearly identical eight-coordinated ionic radii, these structures reveal that while the M-O bond distances in these complexes are almost equal, the M-S distances are statistically different. Moreover, for [Nd(OPS(OEt)2)5(H2O)2]2-, the hypersensitive 4I9/2 → 4G5/2 transition shifts as a function of pressure by -11 cm-1/GPa. Whereas for [Am(OPS(OEt)2)5(H2O)2]2-, the 7F0 → 7F6 transition shows a slightly stronger pressure dependence with a shift of -13 cm-1/GPa and also exhibits broadening of the 5f → 5f transitions at high pressures. These data likely indicate an increased involvement of the 5f orbitals in bonding with Am3+ relative to that of Nd3+ in these complexes.
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Affiliation(s)
- Daniela Gomez Martinez
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Joseph M Sperling
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Nicholas B Beck
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Hannah B Wineinger
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Jacob P Brannon
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Megan A Whitefoot
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, P.O. Box 1625, Idaho 83415, United States
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Nuclear Science and Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
- Center for Radiation Chemistry Research, Idaho National Laboratory, Idaho Falls, P.O. Box 1625, Idaho 83415, United States
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3
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Long BN, Beltrán-Leíva MJ, Sperling JM, Poe TN, Celis-Barros C, Albrecht-Schönzart TE. Altering the spectroscopy, electronic structure, and bonding of organometallic curium(III) upon coordination of 4,4'-bipyridine. Nat Commun 2023; 14:3774. [PMID: 37355669 DOI: 10.1038/s41467-023-39481-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/15/2023] [Indexed: 06/26/2023] Open
Abstract
Structural and electronic characterization of (Cp'3Cm)2(μ-4,4'-bpy) (Cp' = trimethylsilylcyclopentadienyl, 4,4'-bpy = 4,4'-bipyridine) is reported and provides a rare example of curium-carbon bonding. Cp'3Cm displays unexpectedly low energy emission that is quenched upon coordination by 4,4'-bipyridine. Electronic structure calculations on Cp'3Cm and (Cp'3Cm)2(μ-4,4'-bpy) rule out significant differences in the emissive state, rendering 4,4'-bipyridine as the primary quenching agent. Comparisons of (Cp'3Cm)2(μ-4,4'-bpy) with its samarium and gadolinium analogues reveal atypical bonding patterns and electronic features that offer insights into bonding between carbon with f-block metal ions. Here we show the structural characterization of a curium-carbon bond, in addition to the unique electronic properties never before observed in a curium compound.
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Affiliation(s)
- Brian N Long
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA
| | - María J Beltrán-Leíva
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA
| | - Joseph M Sperling
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA
| | - Todd N Poe
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA
| | - Cristian Celis-Barros
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA.
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, CO, 80401, USA.
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA.
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, CO, 80401, USA.
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4
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Zhang H, Hou X, Qiao J, Lin J. Determination of 241Am in Environmental Samples: A Review. Molecules 2022; 27:4536. [PMID: 35889408 PMCID: PMC9315525 DOI: 10.3390/molecules27144536] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
The determination of 241Am in the environment is of importance in monitoring its release and assessing its environmental impact and radiological risk. This paper aims to give an overview about the recent developments and the state-of-art analytical methods for 241Am determination in environmental samples. Thorough discussions are given in this paper covering a wide range of aspects, including sample pre-treatment and pre-concentration methods, chemical separation techniques, source preparation, radiometric and mass spectrometric measurement techniques, speciation analyses, and tracer applications. The paper focuses on some hyphenated separation methods based on different chromatographic resins, which have been developed to achieve high analytical efficiency and sample throughput for the determination of 241Am. The performances of different radiometric and mass spectrometric measurement techniques for 241Am are evaluated and compared. Tracer applications of 241Am in the environment, including speciation analyses of 241Am, and applications in nuclear forensics are also discussed.
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Affiliation(s)
- Haitao Zhang
- Northwest Institute of Nuclear Technology, Xi’an 710024, China; (H.Z.); (J.L.)
| | - Xiaolin Hou
- Department of Environmental and Resource Engineering, Technical University of Denmark, DTU Risø Campus, 4000 Roskilde, Denmark;
| | - Jixin Qiao
- Department of Environmental and Resource Engineering, Technical University of Denmark, DTU Risø Campus, 4000 Roskilde, Denmark;
| | - Jianfeng Lin
- Northwest Institute of Nuclear Technology, Xi’an 710024, China; (H.Z.); (J.L.)
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5
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Jennifer G A, Gao Y, Schreckenbach G, Varathan E. Chemical bonding in actinyl(V/VI) dipyriamethyrin complexes for the actinide series from americium to californium: a computational investigation. Dalton Trans 2022; 51:10006-10019. [PMID: 35703365 DOI: 10.1039/d2dt01142e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The separation of minor actinides in their dioxocation (i.e., actinyl) form in high-valence oxidation states requires efficient ligands for their complexation. In this work, we evaluate the complexation properties of actinyls including americyl, curyl, berkelyl, and californyl in their pentavalent and hexavalent oxidation states with the dipyriamethyrin ligand (L) using density functional theory calculations. The calculated bond parameters show shorter AnOyl bonds with covalent character and longer An-N bonds with ionic character. The bonding between the actinyl cation and the ligand anion shows a flow of charges from the ligand to actinyl in all [AnV/VIO2-L]1-/0 complexes. However, across the series, backdonation of charges from the metal to the ligand becomes prominent and stabilizes the complexes. The thermodynamic parameters in the gas phase and solution suggest that the complex formation reaction is spontaneous for [CfV/VIO2-L]1-/0 complexes and spontaneous at elevated temperatures (>298.15 K) for all other complexes. Spin-orbit corrections have a quantitative impact while the overall trend remains the same. Energy decomposition analysis (EDA) reveals that the interaction between actinyl and the ligand is mainly due to electrostatic contributions that decrease from Am to Cf along with an increase in orbital contributions due to the backdonation of charges from the actinyl metal center to the ligand that greatly stabilizes the Cf complex. The repulsive Pauli energy contribution is observed to increase in the case of [AnVO2-L]1- complexes from Am to Cf while a decrease is observed among [AnVIO2-L]0 complexes, showing minimum repulsion in [CfVIO2-L]0 complex formation. Overall, the hexavalent actinyl complexes show greater stability (increasing from Am to Cf) than their pentavalent counterparts.
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Affiliation(s)
- Abigail Jennifer G
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.
| | - Yang Gao
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada. .,Institut National de La Recherche Scientifique (INRS)-Centre Énergie Matériaux Télécommunications, Varennes, QC, J3X 1P7, Canada.,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Elumalai Varathan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.
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6
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Wang Z, Dong X, Yan Q, Chen J, Xu C. Separation of Americium from Curium through Oxidation State Control with Record Efficiency. Anal Chem 2022; 94:7743-7746. [PMID: 35608454 DOI: 10.1021/acs.analchem.2c01492] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Separation of americium (Am) from curium (Cm) could greatly facilitate the development of advanced nuclear fuel cycles, help with accurate nuclear forensic analysis, and allow for more efficient recovery and utilization of the two strategic elements. In this work, an Am/Cm separation strategy based on the stabilization of pentavalent Am in a biphasic solvent extraction system using bismuthate as the oxidant and N,N,N',N'-tetraoctyl diglycolamide (TODGA) as the extractant was developed. The distinctive differences between Am(V) and Cm(III) in terms of both steric configuration and charge density afford record high Cm/Am separation factors (>104) through only one single contact in solvent extraction. This separation strategy possesses superior features including fast kinetics, long-time stability, no secondary solid radioactive waste generation, and applicability over a wide range of HNO3 acidities, making it promising for Am/Cm separation and analysis in a variety of applications.
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Affiliation(s)
- Zhipeng Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Xue Dong
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Qiang Yan
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
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7
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Mutual separation of trivalent americium and curium using the BCPDTPA/XAD-7 composite sorbent with pure nitric acid solution. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07918-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Yu X, Einkauf JD, Bryantsev VS, Cheshire MC, Reinhart BJ, Autschbach J, Burns JD. Spectroscopic characterization of neptunium(VI), plutonium(VI), americium(VI) and neptunium(V) encapsulated in uranyl nitrate hexahydrate. Phys Chem Chem Phys 2021; 23:13228-13241. [PMID: 34086024 DOI: 10.1039/d1cp01047f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination of crystalline products resulting from the co-crystallization of Np(vi), Pu(vi), Am(vi), and Np(v) with uranyl nitrate hexahydrate (UNH) has been revealed through solid-state spectroscopic characterization via diffuse reflectance UV-Vis-NIR spectroscopy, SEM-EDS, and extended X-ray absorption fine structure (EXAFS) spectroscopy. Density functional and multireference wavefunction calculations were performed to analyze the An(vi/v)O2(NO3)2·2H2O electronic structures and to help assign the observed transitions in the absorption spectra. EXAFS show a similar coordination between the U(VI) in UNH and Np(vi) and Pu(vi); while Am resulted in a similar coordination to Am(iii), as reduction of Am(vi) occurred prior to EXAFS data being obtained. The co-crystallization of the oxidized transuranic species-penta- and hexavalent-with UNH, represents a significant advance from not only a practical standpoint in providing an elegant solution for used nuclear fuel recycle, but also as an avenue to expand the fundamental understanding of the 5f electronic behavior in the solid-state.
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Affiliation(s)
- Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
| | - Jeffrey D Einkauf
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA
| | - Michael C Cheshire
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA
| | | | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
| | - Jonathan D Burns
- Nuclear Engineering and Science Center, Texas A&M University, College Station, TX 77843, USA.
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9
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Einkauf JD, Burns JD. Recovery of Oxidized Actinides, Np(VI), Pu(VI), and Am(VI), from Cocrystallized Uranyl Nitrate Hexahydrate: A Single Technology Approach to Used Nuclear Fuel Recycling. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffrey D. Einkauf
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, United States
| | - Jonathan D. Burns
- Nuclear Engineering and Science Center, Texas A&M University, College Station, Texas 77843, United States
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10
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Fabrication of a novel porous silica-based extraction resin and application in the adsorption of trivalent actinides. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Amicangelo JC, Leenstra WR. Structural variability of pendant groups within the interlayer region of zirconium arene-phosph(on)ates: chemical and structural characterization of oxy- and methyl-linked 2-naphthyl phosphonates, and mixed oxy-linked derivatives. Dalton Trans 2020; 49:3796-3808. [DOI: 10.1039/c9dt03875b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zirconium phosph(on)ates containing naphthalene moieties have been synthesized and in one compound, conformational variations with 2-methylnaphthyl groups result in distinct resonances in the solid state 31P NMR spectrum.
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12
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Biswas S, Edwards SJ, Wang Z, Si H, Vintró LL, Twamley B, Kowalski PM, Baker RJ. Americium incorporation into studtite: a theoretical and experimental study. Dalton Trans 2019; 48:13057-13063. [PMID: 31407762 DOI: 10.1039/c9dt02848j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Studtite, [UO2(η2-O2)(H2O)2]·2H2O, and metastudtite, [UO2(η2-O2)(H2O)2], are important phase alterations of UO2 in a spent nuclear fuel repository and have previously been shown to react with Np(v). In this work we extend the study to Am(v) on a tracer scale and show spectroscopic evidence that the Am is incorporated into the structure of studtite as Am(iii). A computational study on the possible mechanisms for the incorporation of Np and Am shows that protonation of the -yl oxygen is the favoured route and the calculated incorporation energies are large and positive. The results suggest that Am is less favoured compared to Np but energetically more favoured to incorporate both actinide ions into metastudtite rather than studtite. Finally, we have shown that once incorporated, Am readily leaches into water but spectroscopic measurements suggest subtle changes in the structure of studtite.
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Affiliation(s)
- Saptarshi Biswas
- School of Chemistry, University of Dublin Trinity College, Dublin 2, Ireland.
| | - Samuel J Edwards
- School of Chemistry, University of Dublin Trinity College, Dublin 2, Ireland.
| | - Zheming Wang
- Pacific Northwest National Laboratory, MSIN K8-96, P.O. Box 999, Richland, WA 99352, USA
| | - Hang Si
- Institute of Energy and Climate Research, IEK-6: Nuclear Waste Management and Reactor Safety, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52428 Jülich, Germany.
| | - Luis León Vintró
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brendan Twamley
- School of Chemistry, University of Dublin Trinity College, Dublin 2, Ireland.
| | - Piotr M Kowalski
- Institute of Energy and Climate Research, IEK-6: Nuclear Waste Management and Reactor Safety, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52428 Jülich, Germany.
| | - Robert J Baker
- School of Chemistry, University of Dublin Trinity College, Dublin 2, Ireland.
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13
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Marie C, Kaufholz P, Vanel V, Duchesne MT, Russello E, Faroldi F, Baldini L, Casnati A, Wilden A, Modolo G, Miguirditchian M. Development of a Selective Americium Separation Process Using H4TPAEN as Water-Soluble Stripping Agent. SOLVENT EXTRACTION AND ION EXCHANGE 2019. [DOI: 10.1080/07366299.2019.1643569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Cécile Marie
- CEA, DEN, Research Department on Mining and Fuel Recycling Processes (DMRC), SPDS, LCPE, Bagnols-sur-Cèze cedex, France
| | - Peter Kaufholz
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung - Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich, Germany
| | - Vincent Vanel
- CEA, DEN, Research Department on Mining and Fuel Recycling Processes (DMRC), SPDS, LCPE, Bagnols-sur-Cèze cedex, France
| | - Marie-Thérèse Duchesne
- CEA, DEN, Research Department on Mining and Fuel Recycling Processes (DMRC), SPDS, LCPE, Bagnols-sur-Cèze cedex, France
| | - Emilie Russello
- CEA, DEN, Research Department on Mining and Fuel Recycling Processes (DMRC), SPDS, LCPE, Bagnols-sur-Cèze cedex, France
| | - Federica Faroldi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
| | - Laura Baldini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
| | - Alessandro Casnati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parma, Italy
| | - Andreas Wilden
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung - Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich, Germany
| | - Giuseppe Modolo
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung - Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich, Germany
| | - Manuel Miguirditchian
- CEA, DEN, Research Department on Mining and Fuel Recycling Processes (DMRC), SPDS, LCPE, Bagnols-sur-Cèze cedex, France
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14
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Effective separation of Am(III) and Cm(III) using a DGA resin via the selective oxidation of Am(III) to Am(V). J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06571-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Yu J, Ma J, Yang C, Yu H. Binding affinity of pyridines with Am III/Cm III elucidated by density functional theory calculations. Dalton Trans 2019; 48:1613-1623. [PMID: 30629054 DOI: 10.1039/c8dt04669g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent decades, N-heterocyclic ligands have been extensively used in the separation of lanthanides/actinides, whereas the selective extraction of amercium or curium has been very challenging. Using density functional theory calculations, this study is devoted to the investigation of the binding affinity of a series of modelling pyridine ligands with AmIII and CmIII. The structure-property correlations between the amercium and curium systems and the binding affinity were obtained, and promising strategies for efficient separation of AmIII/CmIII were proposed.
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Affiliation(s)
- Jie Yu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, PR China.
| | - Jun Ma
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China.
| | - Chuting Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China.
| | - Haizhu Yu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, PR China.
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16
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Einkauf JD, Wilcox AJ, Burns JD. Solubility and Complexation of the Bismuthate Ion in Nitric Acid Systems. Inorg Chem 2018; 57:15341-15349. [PMID: 30475603 DOI: 10.1021/acs.inorgchem.8b02672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The dissolution rate and solubility of NaBiO3 have been investigated in nitric acid systems ranging from 4 to 6 M HNO3 and were found to be 58-76 μg/cm2·d and 490-830 mM, respectively. The presence of 50 mM U(VI) drastically increased the solubility to 540-1200 mM, while rates of dissolution were relatively unchanged. The solubility of NaBiO3 increased with an increase in U(VI) concentrations at 4 M HNO3, with log-log analysis indicating a one-to-one complex between Bi and U and infrared spectroscopic evidence monitoring uranyl stretching, suggesting complex formation. Absorbance spectra were obtained experimentally and computationally with an absorbance band in the range of 450-600 nm that has been attributed to Bi(V). The ingrowth and decay of Bi(V) in solution was also studied as a function of mass of solid NaBiO3 present, acidity, and temperature. The activation energies of dissolution and decomposition were calculated to be 39 ± 4 and 61 ± 6 kJ/mol, respectively. These results indicate that dissolution of NaBiO3 into the respective Na+ and BiO3-occurs prior to undergoing reduction, a process which conventionally has been believed to occur in the reverse order.
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17
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Burns JD, Clearfield A. Kinetics of Ion Exchange of Zr/Sn(IV) Phosphonate–Phosphate Hybrid Materials for Separation of Lanthanides from Oxidized Actinides. SOLVENT EXTRACTION AND ION EXCHANGE 2018. [DOI: 10.1080/07366299.2018.1542971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jonathan D. Burns
- Center for Nuclear Security Science & Policy Initiatives, Texas A&M University, College Station, TX, USA
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18
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Lewis FW, Harwood LM, Hudson MJ, Afsar A, Laventine DM, Šťastná K, John J, Distler P. Separation of the Minor Actinides Americium(III) and Curium(III) by Hydrophobic and Hydrophilic BTPhen ligands: Exploiting Differences in their Rates of Extraction and Effective Separations at Equilibrium. SOLVENT EXTRACTION AND ION EXCHANGE 2018. [DOI: 10.1080/07366299.2018.1429358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Frank W. Lewis
- Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | | | - Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading, UK
| | - Ashfaq Afsar
- Department of Chemistry, University of Reading, Whiteknights, Reading, UK
| | | | - Kamila Šťastná
- Department of Nuclear Chemistry, Czech Technical University in Prague, Břehová, Prague, Czech Republic
| | - Jan John
- Department of Nuclear Chemistry, Czech Technical University in Prague, Břehová, Prague, Czech Republic
| | - Petr Distler
- Department of Nuclear Chemistry, Czech Technical University in Prague, Břehová, Prague, Czech Republic
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19
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Sturzbecher-Hoehne M, Yang P, D'Aléo A, Abergel RJ. Intramolecular sensitization of americium luminescence in solution: shining light on short-lived forbidden 5f transitions. Dalton Trans 2018; 45:9912-9. [PMID: 26961598 DOI: 10.1039/c6dt00328a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The photophysical properties and solution thermodynamics of water soluble trivalent americium (Am(III)) complexes formed with multidentate chromophore-bearing ligands, 3,4,3-LI(1,2-HOPO), Enterobactin, and 5-LIO(Me-3,2-HOPO), were investigated. The three chelators were shown to act as antenna chromophores for Am(III), generating sensitized luminescence emission from the metal upon complexation, with very short lifetimes ranging from 33 to 42 ns and low luminescence quantum yields (10(-3) to 10(-2)%), characteristic of Near Infra-Red emitters in similar systems. The specific emission peak of Am(III) assigned to the (5)D1 → (7)F1 f-f transition was exploited to characterize the high proton-independent stability of the complex formed with the most efficient sensitizer 3,4,3-LI(1,2-HOPO), with a log β110 = 20.4 ± 0.2 value. In addition, the optical and solution thermodynamic features of these Am(III) complexes, combined with density functional theory calculations, were used to probe the influence of electronic structure on coordination properties across the f-element series and to gain insight into ligand field effects.
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Affiliation(s)
- M Sturzbecher-Hoehne
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - P Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - A D'Aléo
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France.
| | - R J Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
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20
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Burns JD, Moyer BA. Group Hexavalent Actinide Separations: A New Approach to Used Nuclear Fuel Recycling. Inorg Chem 2016; 55:8913-9. [DOI: 10.1021/acs.inorgchem.6b01430] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan D. Burns
- Nuclear Security and Isotope Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, United States
| | - Bruce A. Moyer
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak
Ridge, Tennessee 37831, United States
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21
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Luca V, Tejada JJ, Vega D, Arrachart G, Rey C. Zirconium(IV)–Benzene Phosphonate Coordination Polymers: Lanthanide and Actinide Extraction and Thermal Properties. Inorg Chem 2016; 55:7928-43. [DOI: 10.1021/acs.inorgchem.6b00954] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vittorio Luca
- Comisión
Nacional de Energía Atómica, Centro Atómico Constituyentes, Avenida General Paz 1499, San Martin 1650, Buenos Aires, Argentina
| | - Juan J. Tejada
- Comisión
Nacional de Energía Atómica, Centro Atómico Constituyentes, Avenida General Paz 1499, San Martin 1650, Buenos Aires, Argentina
| | - Daniel Vega
- Comisión
Nacional de Energía Atómica, Centro Atómico Constituyentes, Avenida General Paz 1499, San Martin 1650, Buenos Aires, Argentina
| | - Guilhem Arrachart
- Institut
de Chimie Séparative de Marcoule, ICSM UMR 5257, CEA-CNRS-UM-ENSCM, Site de Marcoule, Bâtiment 426 BP 17171, F-30207 Bagnols sur Cèze, France
| | - Cyrielle Rey
- Institut
de Chimie Séparative de Marcoule, ICSM UMR 5257, CEA-CNRS-UM-ENSCM, Site de Marcoule, Bâtiment 426 BP 17171, F-30207 Bagnols sur Cèze, France
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22
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Richards JM, Sudowe R. Separation of Americium in High Oxidation States from Curium Utilizing Sodium Bismuthate. Anal Chem 2016; 88:4605-8. [DOI: 10.1021/acs.analchem.6b01026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jason M. Richards
- Radiochemistry
Program, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | - Ralf Sudowe
- Radiochemistry
Program, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
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23
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Silbernagel R, Martin CH, Clearfield A. Zirconium(IV) Phosphonate-Phosphates as Efficient Ion-Exchange Materials. Inorg Chem 2016; 55:1651-6. [PMID: 26821183 DOI: 10.1021/acs.inorgchem.5b02555] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Layered metal phosphonate-phosphate hybrid materials are known to be ion-exchange materials. Hybrids with zirconium metal centers were synthesized at varying phosphonate-phosphate ratios in order to explore the function and charge preference. The zirconium hybrid materials were found to have a range of applicable uses with preference for highly charged ions (3+) over lower charged ions (1+ and 2+). The addition of a large excess of phosphate altered the selectivity, and these materials were able to remove all ions from solution regardless of charge. In this paper, we describe newly synthesized compounds that are simple to prepare, reproducible, stable, and offer a variety of separation schemes.
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Affiliation(s)
- Rita Silbernagel
- Department of Chemistry, Texas A&M University , College Station, Texas 77843-3255, United States
| | - Caroline H Martin
- Department of Chemistry, Texas A&M University , College Station, Texas 77843-3255, United States
| | - Abraham Clearfield
- Department of Chemistry, Texas A&M University , College Station, Texas 77843-3255, United States
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24
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Abstract
In the recent past an enormous number of Metal–Organic Framework type compounds (MOFs) have been synthesized.
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25
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Jensen MP, Chiarizia R, Ulicki JS, Spindler BD, Murphy DJ, Hossain MM, Roca-Sabio A, de Blas A, Rodríguez-Blas T. Solvent Extraction Separation of Trivalent Americium from Curium and the Lanthanides. SOLVENT EXTRACTION AND ION EXCHANGE 2015. [DOI: 10.1080/07366299.2015.1046292] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Mincher BJ, Schmitt NC, Schuetz BK, Shehee TC, Hobbs DT. Recent advances in f-element separations based on a new method for the production of pentavalent americium in acidic solution. RSC Adv 2015. [DOI: 10.1039/c5ra03196f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A reliable method for the quantitative production of pentavalent americium in acidic solution.
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27
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Abney CW, Taylor-Pashow KML, Russell SR, Chen Y, Samantaray R, Lockard JV, Lin W. Topotactic Transformations of Metal–Organic Frameworks to Highly Porous and Stable Inorganic Sorbents for Efficient Radionuclide Sequestration. CHEMISTRY OF MATERIALS 2014; 26:5231-5243. [DOI: 10.1021/cm501894h] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/17/2024]
Affiliation(s)
- Carter W. Abney
- Department
of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | | | - Shane R. Russell
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Yuan Chen
- Department
of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Raghabendra Samantaray
- Department
of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Jenny V. Lockard
- Department
of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Wenbin Lin
- Department
of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
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28
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Jensen MP, Chiarizia R, Shkrob IA, Ulicki JS, Spindler BD, Murphy DJ, Hossain M, Roca-Sabio A, Platas-Iglesias C, de Blas A, Rodríguez-Blas T. Aqueous Complexes for Efficient Size-based Separation of Americium from Curium. Inorg Chem 2014; 53:6003-12. [DOI: 10.1021/ic500244p] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Mark P. Jensen
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, 9700 S. Cass
Ave., Argonne, Illinois 60439, United States
| | - Renato Chiarizia
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, 9700 S. Cass
Ave., Argonne, Illinois 60439, United States
| | - Ilya A. Shkrob
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, 9700 S. Cass
Ave., Argonne, Illinois 60439, United States
| | - Joseph S. Ulicki
- Department of Chemistry and Biochemistry, University of Wisconsin—Milwaukee, Milwaukee, Wisconsin 53201, United States
| | - Brian D. Spindler
- Department of Chemistry and Biochemistry, University of Wisconsin—Milwaukee, Milwaukee, Wisconsin 53201, United States
| | - Daniel J. Murphy
- Department of Chemistry and Biochemistry, University of Wisconsin—Milwaukee, Milwaukee, Wisconsin 53201, United States
| | - Mahmun Hossain
- Department of Chemistry and Biochemistry, University of Wisconsin—Milwaukee, Milwaukee, Wisconsin 53201, United States
| | - Adrián Roca-Sabio
- Departamento
de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Rúa da Fraga no. 10, 15008 A Coruña, Spain
| | - Carlos Platas-Iglesias
- Departamento
de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Rúa da Fraga no. 10, 15008 A Coruña, Spain
| | - Andrés de Blas
- Departamento
de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Rúa da Fraga no. 10, 15008 A Coruña, Spain
| | - Teresa Rodríguez-Blas
- Departamento
de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Rúa da Fraga no. 10, 15008 A Coruña, Spain
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