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Weng H, Wang Y, Li F, Muroya Y, Yamashita S, Cheng S. Recovery of platinum group metal resources from high-level radioactive liquid wastes by non-contact photoreduction. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131852. [PMID: 37331059 DOI: 10.1016/j.jhazmat.2023.131852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/29/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023]
Abstract
Recovery of platinum group metals (PGMs) including palladium (Pd), rhodium (Rh), and ruthenium (Ru) from high-level radioactive liquid waste (HLLW) possesses enormous environmental and economic benefits. A non-contact photoreduction method was herein developed to selectively recover each PGM from HLLW. Soluble Pd(II), Rh(III), and Ru(III) ions were reduced to insoluble zero-valent metals and separated from simulated HLLW containing neodymium (Nd) as a representative for lanthanides, another main component in HLLW. Detailed investigation on the photoreduction of different PGMs revealed that Pd(II) could be reduced under 254- or 300-nm UV exposure using either ethanol or isopropanol as reductants. Only 300-nm UV light enabled the reduction of Rh(III) in the presence of ethanol or isopropanol. Ru(III) was the most difficult to reduce, which was only realized by 300-nm UV illumination in isopropanol solution. The effects of pH was also studied, suggesting that lower pH favored the separation of Rh(III) but hindered the reduction of Pd(II) and Ru(III). A delicate three-step process was accordingly designed to achieve the selective recovery of each PGM from simulated HLLW. Pd(II) was reduced by 254-nm UV light with the help of ethanol in the first step. Then Rh(III) was reduced by 300-UV light in the second step after the pH was adjusted to 0.5 to suppress the Ru(III) reduction. In the third step, Ru(III) was reduced by 300-nm UV light after isopropanol was added and the pH was adjusted to 3.2. The separation ratios of Pd, Rh, and Ru exceeded 99.8%, 99.9%, and 90.0%, respectively. Meanwhile, all Nd(III) still remained in the simulated HLLW. The separation coefficients between Pd/Rh and Rh/Ru exceeded 56,000 and 75,000, respectively. This work may provide an alternative method to recover PGMs from HLLW, which minimize the secondary radioactive wastes compared with other approaches.
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Affiliation(s)
- Hanqin Weng
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Department of Beam Material Science, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan; Nuclear Professional School, School of Engineering, The University of Tokyo, 2-22 Shirakata-shirane, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan.
| | - Yi Wang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China
| | - Fuhai Li
- Suzhou Nuclear Power Research Institute Co. Ltd., Suzhou, Jiangsu 215004, China
| | - Yusa Muroya
- Department of Beam Material Science, SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Shinichi Yamashita
- Nuclear Professional School, School of Engineering, The University of Tokyo, 2-22 Shirakata-shirane, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan; Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 4-7-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Sheng Cheng
- Instrumental Analysis Center, Hefei University of Technology, Hefei, Anhui 230009, China
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Hu Y, Tang D, Shen Z, Yao L, Zhao G, Wang X. Photochemically triggered self-extraction of uranium from aqueous solution under ambient conditions. APPLIED CATALYSIS B: ENVIRONMENTAL 2023; 322:122092. [DOI: doi.org/10.1016/j.apcatb.2022.122092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
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Martin CR, Leith GA, Shustova NB. Beyond structural motifs: the frontier of actinide-containing metal-organic frameworks. Chem Sci 2021; 12:7214-7230. [PMID: 34163816 PMCID: PMC8171348 DOI: 10.1039/d1sc01827b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022] Open
Abstract
In this perspective, we feature recent advances in the field of actinide-containing metal-organic frameworks (An-MOFs) with a main focus on their electronic, catalytic, photophysical, and sorption properties. This discussion deviates from a strictly crystallographic analysis of An-MOFs, reported in several reviews, or synthesis of novel structural motifs, and instead delves into the remarkable potential of An-MOFs for evolving the nuclear waste administration sector. Currently, the An-MOF field is dominated by thorium- and uranium-containing structures, with only a few reports on transuranic frameworks. However, some of the reported properties in the field of An-MOFs foreshadow potential implementation of these materials and are the main focus of this report. Thus, this perspective intends to provide a glimpse into the challenges, triumphs, and future directions of An-MOFs in sectors ranging from the traditional realm of gas sorption and separation to recently emerging areas such as electronics and photophysics.
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Affiliation(s)
- Corey R Martin
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
| | - Gabrielle A Leith
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
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Blanes Díaz A, Kravchuk DV, Peroutka AA, Cole E, Basile MC, Forbes TZ. Photoinduced Transformation of Uranyl Nitrate Crown Ether Compounds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000705] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anamar Blanes Díaz
- Department of Chemistry University of Iowa Iowa City IA 52242 United States
| | - Dmytro V. Kravchuk
- Department of Chemistry University of Iowa Iowa City IA 52242 United States
| | | | - Erica Cole
- Department of Chemistry University of Iowa Iowa City IA 52242 United States
| | - Madeline C. Basile
- Department of Chemistry University of Iowa Iowa City IA 52242 United States
| | - Tori Z. Forbes
- Department of Chemistry University of Iowa Iowa City IA 52242 United States
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Li Y, Zhang G, Eugen Schwarz WH, Li J. Excited-State Chemistry: Photocatalytic Methanol Oxidation by Uranyl@Zeolite through Oxygen-Centered Radicals. Inorg Chem 2020; 59:6287-6300. [PMID: 32309927 DOI: 10.1021/acs.inorgchem.0c00388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have elucidated the complex reaction network of partial methanol oxidation, H3COH + O2 → H2CO + H2O2, at a visible-light-activated actinide photocatalyst. The reaction inertness of C-H bonds and O═O diradicals at ambient conditions is overcome through catalysis by photoexcited uranyl units (*UO22+) anchored on a mesoporous silicate. The electronic ground- and excited-state energy hypersurfaces are investigated with quasirelativistic density-functional and ab initio correlated wave function approaches. Our study suggests that the molecular cluster can react on the excited energy surface due to the longevity of excited uranyl, typical for f-element compounds. The theoretically predicted energy profiles, chemical intermediates, related radicals, and product species are consistent with various experimental findings. The uranyl excitation opens various reaction pathways for the oxidation of volatile organic compounds (VOCs) by "hole-driven hydrogen transfer" (HDHT) through several exothermic steps over low activation barriers toward environmentally clean or chemically interesting products. Quantum-chemical modeling reveals the high efficiency of the uranyl photocatalysis and directs the way to further understanding and improvement of VOC degradation, chemical synthesis, and biologic photochemical interactions between uranyl and the environment.
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Affiliation(s)
- Yong Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.,School of Materials & Energy, Guangdong University of Technology, Guangzhou 510006, China.,Institute of Applied and Physical Chemistry, University of Bremen, Bremen 28359, Germany
| | - Guoqing Zhang
- School of Materials & Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - W H Eugen Schwarz
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.,Department of Chemistry, University of Siegen, Siegen 57068, Germany
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.,Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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Separation of Re(VII) from aqueous solution by acetone-enhanced photoreduction: an insight into the role of acetone. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.04.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pyridine solvated dioxouranium complex with salen ligand: Synthesis, characterization and luminescence properties. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2019.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li F, Shang Y, Ding Z, Weng H, Xiao J, Lin M. Efficient extraction and separation of palladium (Pd) and ruthenium (Ru) from simulated HLLW by photoreduction. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.03.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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McGrail BT, Pianowski LS, Burns PC. Photochemical Water Oxidation and Origin of Nonaqueous Uranyl Peroxide Complexes. J Am Chem Soc 2014; 136:4797-800. [DOI: 10.1021/ja502425t] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Brendan T. McGrail
- Department of Civil & Environmental Engineering & Earth Sciences and ‡Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Laura S. Pianowski
- Department of Civil & Environmental Engineering & Earth Sciences and ‡Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C. Burns
- Department of Civil & Environmental Engineering & Earth Sciences and ‡Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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Salomone VN, Meichtry JM, Schinelli G, Leyva AG, Litter MI. Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2013.12.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Natrajan LS. Developments in the photophysics and photochemistry of actinide ions and their coordination compounds. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.029] [Citation(s) in RCA: 175] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Odoh SO, Pan QJ, Shamov GA, Wang F, Fayek M, Schreckenbach G. Theoretical Study of the Reduction of Uranium(VI) Aquo Complexes on Titania Particles and by Alcohols. Chemistry 2012; 18:7117-27. [DOI: 10.1002/chem.201101197] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 12/20/2011] [Indexed: 11/06/2022]
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Wang D, van Gunsteren WF, Chai Z. Recent advances in computational actinoid chemistry. Chem Soc Rev 2012; 41:5836-65. [DOI: 10.1039/c2cs15354h] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Redmond MP, Cornet SM, Woodall SD, Whittaker D, Collison D, Helliwell M, Natrajan LS. Probing the local coordination environment and nuclearity of uranyl(vi) complexes in non-aqueous media by emission spectroscopy. Dalton Trans 2011; 40:3914-26. [DOI: 10.1039/c0dt01464h] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Abstract
AbstractThe surface adsorption and reaction of water with PuO2thin films was investigated by X-ray and ultra-violet photoelectron spectroscopies (XPS and UPS, respectively). Initial motivation of the work was to further investigate the potential role of water in promoting the surface oxidation of PuO2to Pu(IV)/Pu(V) mixed oxides formerly discussed in literature which may seriously impede the stability of spent nuclear fuel. Water may act as oxidant, as catalyst for the oxidation by O2, or as reactant leading to formation of hydrous oxide being oxidized by O2instead of PuO2(cr). In order to obtain high water coverage under the experimentally required ultra-high vacuum conditions, water was adsorbed at low temperature (77 K) as thick ice film. Results were compared to thin water layers adsorbed at room temperature.When adsorbed at 298 K, water dissociates forming a thin hydroxyl (OH−) layer with small amounts of molecularly adsorbed water but no further reaction (in the sense of oxidation or reduction) is detected. At 77 K, water condenses as ice film. Here, a mainly non-dissociative adsorption of water is observed for layers ∼1 ML while for higher dosages, only molecular water/ice is observed and no significant contribution of OH (in the water layers) is detected. When exposing the sample to UV light while warming it up, the ice layer thaws and desorbs leaving behind a Pu2O3surface. This surprising reduction of PuO2stands in sharp contrast to the radiolytically driven oxidation of spent fuel in presence of water. It is discussed in terms of a photochemically driven interface reaction.
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Affiliation(s)
| | - T. Gouder
- European Commission, Institute for Transuranium Elements, Karlsruhe
| | - F. Huber
- European Commission, Institute for Transuranium, Karlsruhe
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Kirishima A, Kimura T, Nagaishi R, Tochiyama O. Luminescence properties of tetravalent uranium in aqueous solution. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.92.9.705.54971] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Summary
The luminescence spectra of U4+ in aqueous solutions were observed in the UV-VIS region at ambient and liquid nitrogen temperatures. The excitation spectrum indicates that the luminescence is arising from the deexcitation of a 5f electron at the 1
S
0 level and no other emissions of U4+ in aqueous solutions were detected for other f–f transitions. All the luminescence peaks were assigned to the transitions from 1
S
0 to lower 5f levels. To estimate the luminescence lifetime, luminescence decay curves were measured using time-resolved laser-induced fluorescence spectroscopy. At room temperature, the decay curve indicated that the lifetime was shorter than 20 ns. On the other hand, the frozen sample of U4+ in aqueous solution at liquid nitrogen temperature showed the same emission spectrum as at room temperature and its lifetime was 149 ns in H2O system and 198 ns in D2O system. The longer lifetime at liquid nitrogen temperature made it possible to measure the spectrum of U4+ at the concentration as low as 10-6 M. The difference in the anion species (ClO4
-, Cl-, SO4
2-) affected the structure of the emission spectrum to some extent.
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Tsushima S. Photochemical Reduction of UO22+ in the Presence of Alcohol Studied by Density Functional Theory Calculations. Inorg Chem 2009; 48:4856-62. [DOI: 10.1021/ic900066z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Satoru Tsushima
- Institut für Radiochemie, Forschungszentrum Dresden-Rossendorf (FZD), P.O. Box 51 01 19, Dresden D-01314, Germany
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Horeglad P, Nocton G, Filinchuk Y, Pécaut J, Mazzanti M. Pentavalent uranyl stabilized by a dianionic bulky tetradentate ligand. Chem Commun (Camb) 2009:1843-5. [DOI: 10.1039/b821398d] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hayton TW, Wu G. Mixed-Ligand Uranyl(V) β-Diketiminate/β-Diketonate Complexes: Synthesis and Characterization. Inorg Chem 2008; 47:7415-23. [DOI: 10.1021/ic800778j] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106
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Hayton TW, Wu G. Synthesis, Characterization, and Reactivity of a Uranyl β-Diketiminate Complex. J Am Chem Soc 2008; 130:2005-14. [DOI: 10.1021/ja077538q] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara California 93106
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara California 93106
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TORAISHI T, KIMURA T, ARISAKA M. Toward Innovative Actinide Separation Processes: Sequential Reduction Scheme of Uranium, Neptunium, and Plutonium in 3 M HNO3by External Ultrasound Irradiation. J NUCL SCI TECHNOL 2007. [DOI: 10.1080/18811248.2007.9711365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kannan S, Moody MA, Barnes CL, Duval PB. Fluoride Abstraction and Reversible Photochemical Reduction of Cationic Uranyl(VI) Phosphine Oxide Complexes. Inorg Chem 2006; 45:9206-12. [PMID: 17083218 DOI: 10.1021/ic060742e] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The syntheses, structural and spectroscopic characterization, fluoride abstraction reactions, and photochemical reactivity of cationic uranyl(VI) phosphine oxide complexes are described. [UO2(OPPh3)4][X]2 (1a, X = OTf; 1b, X = BF4) and [UO2(dppmo)2(OPPh3)][X]2 (2a, X = OTf; 2b, X = BF(4)) are prepared from the corresponding uranyl(VI) chloride precursor and 2 equiv each of AgX and phosphine oxide. The BF4- compounds 1b and 2b are prone to fluoride abstraction reactions in methanol, leading to dinuclear fluoride-bridged uranyl(VI) complexes. Fluoride abstraction of 2b in methanol generates two structural isomers of the fluoride-bridged uranyl(VI) dimer [(UO2(dppmo)2)2(mu-F)][BF4]3 (4), both of which have been structurally characterized. In the major isomer 4C, the four dppmo ligands are all chelating, while in the minor isomer 4B, two of the dppmo ligands bridge adjacent uranyl(VI) centers. Photolysis of 2b in methanol proceeds through 4 to form the uranium(IV) fluoride complex [UO2F2(dppmo)3][BF4]2 (5), involving another fluoride abstraction step. X-ray crystallography shows 5 to be a rare example of a structurally characterized uranium(IV) complex possessing terminal U-F bonds. Complex 5 reverts to 4 in solution upon exposure to air.
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Affiliation(s)
- Shanmugaperumal Kannan
- Department of Chemistry, University of Missouri-Columbia, 601 South College Avenue, Columbia, Missouri 65211, USA
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Naik D, Sureshkumar M, Rakshit S. Studies on photo-degradation of thionine in the presence of uranyl ion and H2O2. J Photochem Photobiol A Chem 2004. [DOI: 10.1016/j.jphotochem.2004.03.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Watanabe CN, Gehlen MH. Luminescence quenching of uranyl ion adsorbed in nafion membrane by alcohols and vinyl monomers. J Photochem Photobiol A Chem 2003. [DOI: 10.1016/s1010-6030(03)00002-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Billard I. Lanthanide and actinide solution chemistry as studied by time-resolved emission spectroscopy. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0168-1273(02)33006-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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