1
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Murillo J, Seed JA, Wooles AJ, Oakley MS, Goodwin CAP, Gregson M, Dan D, Chilton NF, Gaunt AJ, Kozimor SA, Liddle ST, Scott BL. Carbene Complexes of Plutonium: Structure, Bonding, and Divergent Reactivity to Lanthanide Analogs. J Am Chem Soc 2024; 146:4098-4111. [PMID: 38301208 PMCID: PMC10870714 DOI: 10.1021/jacs.3c12719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/21/2023] [Accepted: 01/08/2024] [Indexed: 02/03/2024]
Abstract
Organoplutonium chemistry was established in 1965, yet structurally authenticated plutonium-carbon bonds remain rare being limited to π-bonded carbocycle and σ-bonded isonitrile and hydrocarbyl derivatives. Thus, plutonium-carbenes, including alkylidenes and N-heterocyclic carbenes (NHCs), are unknown. Here, we report the preparation and characterization of the diphosphoniomethanide-plutonium complex [Pu(BIPMTMSH)(I)(μ-I)]2 (1Pu, BIPMTMSH = (Me3SiNPPh2)2CH) and the diphosphonioalkylidene-plutonium complexes [Pu(BIPMTMS)(I)(DME)] (2Pu, BIPMTMS = (Me3SiNPPh2)2C) and [Pu(BIPMTMS)(I)(IMe4)2] (3Pu, IMe4 = C(NMeCMe)2), thus disclosing non-actinyl transneptunium multiple bonds and transneptunium NHC complexes. These Pu-C double and dative bonds, along with cerium, praseodymium, samarium, uranium, and neptunium congeners, enable lanthanide-actinide and actinide-actinide comparisons between metals with similar ionic radii and isoelectronic 4f5 vs 5f5 electron-counts within conserved ligand fields over 12 complexes. Quantum chemical calculations reveal that the orbital-energy and spatial-overlap terms increase from uranium to neptunium; however, on moving to plutonium the orbital-energy matching improves but the spatial overlap decreases. The bonding picture that emerges is more complex than the traditional picture of the bonding of lanthanides being ionic and early actinides being more covalent but becoming more ionic left to right. Multiconfigurational calculations on 2M and 3M (M = Pu, Sm) account for the considerably more complex UV/vis/NIR spectra for 5f5 2Pu and 3Pu compared to 4f5 2Sm and 3Sm. Supporting the presence of Pu═C double bonds in 2Pu and 3Pu, 2Pu exhibits metallo-Wittig bond metathesis involving the highest atomic number element to date, reacting with benzaldehyde to produce the alkene PhC(H)═C(PPh2NSiMe3)2 (4) and "PuOI". In contrast, 2Ce and 2Pr do not react with benzaldehyde to produce 4.
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Affiliation(s)
- Jesse Murillo
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - John A. Seed
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Ashley J. Wooles
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Meagan S. Oakley
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Conrad A. P. Goodwin
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Matthew Gregson
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - David Dan
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nicholas F. Chilton
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Research
School of Chemistry, The Australian National
University, Sullivans
Creek Road, Canberra, ACT 2601, Australia
| | - Andrew J. Gaunt
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Stosh A. Kozimor
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Stephen T. Liddle
- Department
of Chemistry and Centre for Radiochemistry Research, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Brian L. Scott
- Materials
Physics & Applications Division, Los
Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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2
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Niklas JE, Studvick CM, Bacsa J, Popov IA, La Pierre HS. Ligand Control of Oxidation and Crystallographic Disorder in the Isolation of Hexavalent Uranium Mono-Oxo Complexes. Inorg Chem 2023; 62:2304-2316. [PMID: 36668669 DOI: 10.1021/acs.inorgchem.2c04056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The development of high-valent transuranic chemistry requires robust methodologies to access and fully characterize reactive species. We have recently demonstrated that the reducing nature of imidophosphorane ligands supports the two-electron oxidation of U4+ to U6+ and established the use of this ligand to evaluate the inverse-trans-influence (ITI) in actinide metal-ligand multiple bond (MLMB) complexes. To extend this methodology and analysis to transuranic complexes, new small-scale synthetic strategies and lower-symmetry ligand derivatives are necessary to improve crystallinity and reduce crystallographic disorder. To this end, the synthesis of two new imidophosphorane ligands, [N═PtBu(pip)2]- (NPC1) and [N═PtBu(pyrr)2]- (NPC2) (pip = piperidinyl; pyrr = pyrrolidinyl), is presented, which break pseudo-C3 axes in the tetravalent complexes, U[NPC1]4 and U[NPC2]4. The reaction of these complexes with two-electron oxygen-atom-transfer reagents (N2O, trimethylamine N-oxide (TMAO) and 2,3:5,6-dibenzo-7-azabicyclo[2.2.1]hepta-2,5-diene (dbabhNO)) yields the U6+ mono-oxo complexes U(O)[NPC1]4 and U(O)[NPC2]4. This methodology is optimized for direct translation to transuranic elements. Of the two ligands, the NPC2 framework is most suitable for facilitating detailed bonding analysis and assessment of the ITI. Theoretical evaluation of the U-(NPC) bonding confirms a substantial difference between axially and equatorially bonded N atoms, revealing markedly more covalent U-Nax interactions. The U 6d + 5f combined contribution for U-Nax is nearly double that of U-Neq, accounting for ITI shortening and increased bond order of the axial bond. Two distinct N-atom hybridizations in the pyrrolidine/piperidine rings are noted across the complexes, with approximate sp2 and sp3 configurations describing the slightly shorter P-N"planar" and slightly longer P-N"pyramidal" bonds, respectively. In all complexes, the NPC2 ligands feature more planar N atoms than NPC1, in accordance with a higher electron-donating capacity of the former.
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Affiliation(s)
- Julie E Niklas
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Chad M Studvick
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - John Bacsa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States.,Nuclear and Radiological Engineering Program, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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3
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Su J, Cheisson T, McSkimming A, Goodwin CAP, DiMucci IM, Albrecht-Schönzart T, Scott BL, Batista ER, Gaunt AJ, Kozimor SA, Yang P, Schelter EJ. Complexation and redox chemistry of neptunium, plutonium and americium with a hydroxylaminato ligand. Chem Sci 2021; 12:13343-13359. [PMID: 34777753 PMCID: PMC8528073 DOI: 10.1039/d1sc03905a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/03/2021] [Indexed: 11/25/2022] Open
Abstract
There is significant interest in ligands that can stabilize actinide ions in oxidation states that can be exploited to chemically differentiate 5f and 4f elements. Applications range from developing large-scale actinide separation strategies for nuclear industry processing to carrying out analytical studies that support environmental monitoring and remediation efforts. Here, we report syntheses and characterization of Np(iv), Pu(iv) and Am(iii) complexes with N-tert-butyl-N-(pyridin-2-yl)hydroxylaminato, [2-(tBuNO)py]−(interchangeable hereafter with [(tBuNO)py]−), a ligand which was previously found to impart remarkable stability to cerium in the +4 oxidation state. An[(tBuNO)py]4 (An = Pu, 1; Np, 2) have been synthesized, characterized by X-ray diffraction, X-ray absorption, 1H NMR and UV-vis-NIR spectroscopies, and cyclic voltammetry, along with computational modeling and analysis. In the case of Pu, oxidation of Pu(iii) to Pu(iv) was observed upon complexation with the [(tBuNO)py]− ligand. The Pu complex 1 and Np complex 2 were also isolated directly from Pu(iv) and Np(iv) precursors. Electrochemical measurements indicate that a Pu(iii) species can be accessed upon one-electron reduction of 1 with a large negative reduction potential (E1/2 = −2.26 V vs. Fc+/0). Applying oxidation potentials to 1 and 2 resulted in ligand-centered electron transfer reactions, which is different from the previously reported redox chemistry of UIV[(tBuNO)py]4 that revealed a stable U(v) product. Treatment of an anhydrous Am(iii) precursor with the [(tBuNO)py]− ligand did not result in oxidation to Am(iv). Instead, the dimeric complex [AmIII(μ2-(tBuNO)py)((tBuNO)py)2]2 (3) was isolated. Complex 3 is a rare example of a structurally characterized non-aqueous Am-containing molecular complex prepared using inert atmosphere techniques. Predicted redox potentials from density functional theory calculations show a trivalent accessibility trend of U(iii) < Np(iii) < Pu(iii) and that the higher oxidation states of actinides (i.e., +5 for Np and Pu and +4 for Am) are not stabilized by [2-(tBuNO)py]−, in good agreement with experimental observations. The coordination modes and electronic properties of a strongly coordinating hydroxylaminato ligand with Np, Pu and Am were investigated.Complexes were characterized by a range of experimental and computational techniques.![]()
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Affiliation(s)
- Jing Su
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Thibault Cheisson
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
| | - Alex McSkimming
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
| | - Conrad A P Goodwin
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Ida M DiMucci
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Thomas Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way Tallahassee Florida 32306 USA
| | - Brian L Scott
- Materials and Physics Applications Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Stosh A Kozimor
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Eric J Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
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4
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Galley SS, Pattenaude SA, Ray D, Gaggioli CA, Whitefoot MA, Qiao Y, Higgins RF, Nelson WL, Baumbach R, Sperling JM, Zeller M, Collins TS, Schelter EJ, Gagliardi L, Albrecht-Schönzart TE, Bart SC. Using Redox-Active Ligands to Generate Actinide Ligand Radical Species. Inorg Chem 2021; 60:15242-15252. [PMID: 34569783 DOI: 10.1021/acs.inorgchem.1c01766] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Using a redox-active dioxophenoxazine ligand, DOPO (DOPO = 2,4,6,8-tetra-tert-butyl-1-oxo-1H-phenoxazine-9-olate), a family of actinide (U, Th, Np, and Pu) and Hf tris(ligand) coordination compounds was synthesized. The full characterization of these species using 1H NMR spectroscopy, electronic absorption spectroscopy, SQUID magnetometry, and X-ray crystallography showed that these compounds are analogous and exist in the form M(DOPOq)2(DOPOsq), where two ligands are of the oxidized quinone form (DOPOq) and the third is of the reduced semiquinone (DOPOsq) form. The electronic structures of these complexes were further investigated using CASSCF calculations, which revealed electronic structures consistent with metals in the +4 formal oxidation state and one unpaired electron localized on one ligand in each complex. Furthermore, f orbitals of the early actinides show a sizable bonding overlap with the ligand 2p orbitals. Notably, this is the first example of a plutonium-ligand radical species and a rare example of magnetic data being recorded for a homogeneous plutonium coordination complex.
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Affiliation(s)
- Shane S Galley
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Scott A Pattenaude
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Debmalya Ray
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Centre, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carlo Alberto Gaggioli
- Department of Chemistry, Pritzker School of Molecular Engineering, James Franck Institute, and Chicago Center for Theoretical Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Megan A Whitefoot
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Yusen Qiao
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Robert F Higgins
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - W L Nelson
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States.,Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
| | - Ryan Baumbach
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States.,Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph M Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Matthias Zeller
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tyler S Collins
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Eric J Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Laura Gagliardi
- Department of Chemistry, Pritzker School of Molecular Engineering, James Franck Institute, and Chicago Center for Theoretical Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Suzanne C Bart
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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5
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Su DM, Cai HX, Zheng XJ, Niu S, Pan QJ. Theoretical design and exploration of low-valent uranium metallocenes via manipulating cyclopentadienyl substituent. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2020.113107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Windorff CJ, Sperling JM, Albrecht-Schönzart TE, Bai Z, Evans WJ, Gaiser AN, Gaunt AJ, Goodwin CAP, Hobart DE, Huffman ZK, Huh DN, Klamm BE, Poe TN, Warzecha E. A Single Small-Scale Plutonium Redox Reaction System Yields Three Crystallographically-Characterizable Organoplutonium Complexes. Inorg Chem 2020; 59:13301-13314. [PMID: 32910649 DOI: 10.1021/acs.inorgchem.0c01671] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An approach to obtaining substantial amounts of data from a hazardous starting material that can only be obtained and handled in small quantities is demonstrated by the investigation of a single small-scale reaction of cyclooctatetraene, C8H8, with a solution obtained from the reduction of Cp'3Pu (Cp' = C5H4SiMe3) with potassium graphite. This one reaction coupled with oxidation of a product has provided single-crystal X-ray structural data on three organoplutonium compounds as well as information on redox chemistry thereby demonstrating an efficient route to new reactivity and structural information on this highly radioactive element. The crystal structures were obtained from the reduction of C8H8 by a putative Pu(II) complex, (Cp'3PuII)1-, generated in situ, to form the Pu(III) cyclooctatetraenide complex, [K(crypt)][(C8H8)2PuIII], 1-Pu, and the tetra(cyclopentadienyl) Pu(III) complex, [K(crypt)][Cp'4PuIII], 2-Pu. Oxidation of the sample of 1-Pu with Ag(I) afforded a third organoplutonium complex that has been structurally characterized for the first time, (C8H8)2PuIV, 3-Pu. Complexes 1-Pu and 3-Pu contain Pu sandwiched between parallel (C8H8)2- rings. The (Cp'4PuIII)- anion in 2-Pu features three η5-Cp' rings and one η1-Cp' ring, which is a rare example of a formal Pu-C η1-bond. In addition, this study addresses the challenge of small-scale synthesis imparted by radiological and material availability of transuranium isotopes, in particular that of pure metal samples. A route to an anhydrous Pu(III) starting material from the more readily available PuIVO2 was developed to facilitate reproducible syntheses and allow complete spectroscopic analysis of 1-Pu and 2-Pu. PuIVO2 was converted to PuIIIBr3(DME)2 (DME = CH3OCH2CH2OCH3) and subsequently PuIIIBr3(THF)x, which was used to independently synthesize 1-Pu, 2-Pu, and 3-Pu.
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Affiliation(s)
- Cory J Windorff
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States.,Department of Chemistry, University of California-Irvine, Irvine, California 92697, United States.,Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Joseph M Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Zhuanling Bai
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - William J Evans
- Department of Chemistry, University of California-Irvine, Irvine, California 92697, United States
| | - Alyssa N Gaiser
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Conrad A P Goodwin
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - David E Hobart
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Zachary K Huffman
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Daniel N Huh
- Department of Chemistry, University of California-Irvine, Irvine, California 92697, United States
| | - Bonnie E Klamm
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Todd N Poe
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Evan Warzecha
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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7
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Brewster JT, Mangel DN, Gaunt AJ, Saunders DP, Zafar H, Lynch VM, Boreen MA, Garner ME, Goodwin CAP, Settineri NS, Arnold J, Sessler JL. In-Plane Thorium(IV), Uranium(IV), and Neptunium(IV) Expanded Porphyrin Complexes. J Am Chem Soc 2019; 141:17867-17874. [DOI: 10.1021/jacs.9b09123] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- James T. Brewster
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Daniel N. Mangel
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Andrew J. Gaunt
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Douglas P. Saunders
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Hadiqa Zafar
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Vincent M. Lynch
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael A. Boreen
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Mary E. Garner
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Conrad A. P. Goodwin
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nicholas S. Settineri
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - John Arnold
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jonathan L. Sessler
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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8
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Marsh ML, White FD, Meeker DS, McKinley CD, Dan D, Van Alstine C, Poe TN, Gray DL, Hobart DE, Albrecht-Schmitt TE. Electrochemical Studies of Selected Lanthanide and Californium Cryptates. Inorg Chem 2019; 58:9602-9612. [DOI: 10.1021/acs.inorgchem.9b00920] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew L. Marsh
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Frankie D. White
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - David S. Meeker
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Carla D. McKinley
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - David Dan
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Cayla Van Alstine
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Todd N. Poe
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Danielle L. Gray
- Department of Chemistry, University of Illinois at Urbana−Champaign, Champaign, Illinois 61820, United States
| | - David E. Hobart
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Thomas E. Albrecht-Schmitt
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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9
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Horne GP, Mezyk SP, Moulton N, Peller JR, Geist A. Time-resolved and steady-state irradiation of hydrophilic sulfonated bis-triazinyl-(bi)pyridines - modelling radiolytic degradation. Dalton Trans 2019; 48:4547-4554. [PMID: 30869725 DOI: 10.1039/c9dt00474b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Efficient separation of the actinides from the lanthanides is a critical challenge in the development of a more sophisticated spent nuclear fuel recycling process. Based upon the slight differences in f-orbital distribution, a new class of soft nitrogen-donor ligands, the sulfonated bis-triazinyl-(bi)pyridines, has been identified and shown to be successful for this separation under anticipated, large-scale treatment conditions. The radiation robustness of these ligands is key to their implementation; however, current stability studies have yielded conflicting results. Here we report on the radiolytic degradation of the sulfonated 2,6-bis(1,2,4-triazin-3-yl)pyridine (BTP(S)) and 6,6'-bis(1,2,4-triazin-3-yl)-2,2'-bipyridine (BTBP(S)) in aerated, aqueous solutions using a combination of time-resolved pulsed electron techniques to ascertain their reaction kinetics with key aqueous radiolysis products (eaq-, H˙, ˙OH, and ˙NO3), and steady state gamma radiolysis in conjunction with liquid chromatography for identification and quantification of both ligands as a function of absorbed dose. These data were used to construct a predictive deterministic model to provide critical insight into the fundamental radiolysis mechanisms responsible for the ligands' radiolytic stability. The first-order decays of BTP(S) and BTBP(S) are predominantly driven by oxidative processes (˙OH and, to a lesser extent, H2O2), for which calculations demonstrate that the rate of degradation is inhibited by the formation of ligand degradation products that undergo secondary reactions with the primary products of water radiolysis. Overall, BTP(S) is ∼20% more radiolytically stable than BTBP(S), but over 90% of either ligand is consumed within 1 kGy.
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Affiliation(s)
- Gregory P Horne
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
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10
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Su J, Windorff CJ, Batista ER, Evans WJ, Gaunt AJ, Janicke MT, Kozimor SA, Scott BL, Woen DH, Yang P. Identification of the Formal +2 Oxidation State of Neptunium: Synthesis and Structural Characterization of {Np II[C 5H 3(SiMe 3) 2] 3} 1. J Am Chem Soc 2018; 140:7425-7428. [PMID: 29870238 DOI: 10.1021/jacs.8b03907] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a new formal oxidation state for neptunium in a crystallographically characterizable molecular complex, namely Np2+ in [K(crypt)][NpIICp″3] [crypt = 2.2.2-cryptand, Cp″ = C5H3(SiMe3)2]. Density functional theory calculations indicate that the ground state electronic configuration of the Np2+ ion in the complex is 5f46d1.
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Affiliation(s)
| | - Cory J Windorff
- Department of Chemistry , University of California-Irvine , Irvine , California 92697-2025 , United States
| | | | - William J Evans
- Department of Chemistry , University of California-Irvine , Irvine , California 92697-2025 , United States
| | | | | | | | - Brian L Scott
- Materials Physics and Applications Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - David H Woen
- Department of Chemistry , University of California-Irvine , Irvine , California 92697-2025 , United States
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11
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Pattenaude SA, Anderson NH, Bart SC, Gaunt AJ, Scott BL. Non-aqueous neptunium and plutonium redox behaviour in THF – access to a rare Np(iii) synthetic precursor. Chem Commun (Camb) 2018; 54:6113-6116. [DOI: 10.1039/c8cc02611d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Redox stability of tetravalent Np and Pu in THF is explored, leading to facile access routes into anhydrous Np(iii) chemistry.
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Affiliation(s)
- Scott A. Pattenaude
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
- H. C. Brown Laboratory
| | | | - Suzanne C. Bart
- H. C. Brown Laboratory
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | - Andrew J. Gaunt
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - Brian L. Scott
- Materials and Physics Applications Division
- Los Alamos National Laboratory
- Los Alamos
- USA
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12
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Boreen MA, Parker BF, Hohloch S, Skeel BA, Arnold J. f-Block complexes of a m-terphenyl dithiocarboxylate ligand. Dalton Trans 2018; 47:96-104. [DOI: 10.1039/c7dt04073c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homoleptic thorium(iv), uranium(iv), and lanthanum(iii) dithiocarboxylate complexes were prepared and studied electrochemically; the lanthanum complex was found to bind toluene.
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Affiliation(s)
| | - Bernard F. Parker
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| | - Stephan Hohloch
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| | | | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
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13
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Klamm BE, Windorff CJ, Marsh ML, Meeker DS, Albrecht-Schmitt TE. Schiff-base coordination complexes with plutonium(iv) and cerium(iv). Chem Commun (Camb) 2018; 54:8634-8636. [DOI: 10.1039/c8cc03571g] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of a Pu(iv) salen complex reveals the stabilization of the +4 oxidation state with respect to that observed with Ce(iv).
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Affiliation(s)
- Bonnie E. Klamm
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee
- USA
| | - Cory J. Windorff
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee
- USA
| | - Matthew L. Marsh
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee
- USA
| | - David S. Meeker
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee
- USA
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14
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Wehbie M, Arrachart G, Arrambide Cruz C, Karamé I, Ghannam L, Pellet-Rostaing S. Organization of diglycolamides on resorcinarene cavitand and its effect on the selective extraction and separation of HREEs. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.06.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Abstract
Fifty years have passed since the foundation of organometallic neptunium chemistry, and yet only a handful of complexes have been reported, and even fewer have been fully characterized. Yet, increasingly, combined synthetic/spectroscopic/computational studies are demonstrating how covalently bonding, soft, carbocyclic organometallic ligands provide an excellent platform for advancing the fundamental understanding of the differences in orbital contributions and covalency in f-block metal-ligand bonding. Understanding the subtleties is the key to the safe handling and separations of the highly radioactive nuclei. This review describes the complexes that have been synthesized to date and presents a critical assessment of the successes and difficulties in their analysis and the bonding information they have provided. Because of increasing recent efforts to start new Np-capable air-sensitive inorganic chemistry laboratories, the importance of radioactivity, the basics of Np decay and its ramifications (including the radiochemical synthesis of one organometallic compound), and the available anhydrous starting materials are also surveyed. The review also highlights a range of instances in which important differences in the chemical behavior between Np and its closest neighbors, uranium and plutonium, are found.
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Affiliation(s)
- Polly L Arnold
- EaStCHEM School of Chemistry, University of Edinburgh , The King's Buildings, Edinburgh, EH9 3FJ, U.K
| | - Michał S Dutkiewicz
- EaStCHEM School of Chemistry, University of Edinburgh , The King's Buildings, Edinburgh, EH9 3FJ, U.K.,European Commission, DG Joint Research Centre, Directorate G-Nuclear Safety and Security, Advanced Nuclear Knowledge-G.I.5, Postfach 2340, D-76125, Karlsruhe, Germany
| | - Olaf Walter
- European Commission, DG Joint Research Centre, Directorate G-Nuclear Safety and Security, Advanced Nuclear Knowledge-G.I.5, Postfach 2340, D-76125, Karlsruhe, Germany
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16
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Windorff CJ, Chen GP, Cross JN, Evans WJ, Furche F, Gaunt AJ, Janicke MT, Kozimor SA, Scott BL. Identification of the Formal +2 Oxidation State of Plutonium: Synthesis and Characterization of {Pu II[C 5H 3(SiMe 3) 2] 3}<sup/>. J Am Chem Soc 2017; 139:3970-3973. [PMID: 28235179 DOI: 10.1021/jacs.7b00706] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Over 70 years of chemical investigations have shown that plutonium exhibits some of the most complicated chemistry in the periodic table. Six Pu oxidation states have been unambiguously confirmed (0 and +3 to +7), and four different oxidation states can exist simultaneously in solution. We report a new formal oxidation state for plutonium, namely Pu2+ in [K(2.2.2-cryptand)][PuIICp″3], Cp″ = C5H3(SiMe3)2. The synthetic precursor PuIIICp″3 is also reported, comprising the first structural characterization of a Pu-C bond. Absorption spectroscopy and DFT calculations indicate that the Pu2+ ion has predominantly a 5f6 electron configuration with some 6d mixing.
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Affiliation(s)
- Cory J Windorff
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Guo P Chen
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | | | - William J Evans
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Filipp Furche
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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17
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Arnold PL, Turner ZR. Carbon oxygenate transformations by actinide compounds and catalysts. Nat Rev Chem 2017. [DOI: 10.1038/s41570-016-0002] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Liu H, Ghatak T, Eisen MS. Organoactinides in catalytic transformations: scope, mechanisms and Quo Vadis. Chem Commun (Camb) 2017; 53:11278-11297. [DOI: 10.1039/c7cc04415a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The last decade has witnessed brilliant and remarkable advances in the chemistry of the early actinides in stoichiometric and in challenging catalytic processes. This canvas of knowledge allows the design of chemical reactivities reaching a high level of sophistication. This review highlights the latest results obtained since 2008 on those catalytic processes.
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Affiliation(s)
- Heng Liu
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
| | - Tapas Ghatak
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion
- Israel
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19
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Surbella RG, Ducati LC, Pellegrini KL, McNamara BK, Autschbach J, Schwantes JM, Cahill CL. A new Pu(iii) coordination geometry in (C5H5NBr)2[PuCl3(H2O)5]·2Cl·2H2O as obtained via supramolecular assembly in aqueous, high chloride media. Chem Commun (Camb) 2017; 53:10816-10819. [DOI: 10.1039/c7cc05988d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel hydrated Pu(iii) chloride, (C5H5NBr)2[PuCl3(H2O)5]·Cl·2H2O, is prepared from aqueous media and the non-covalent interaction pairings are rationalized using electrostatic potentials.
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Affiliation(s)
- Robert G. Surbella
- Department of Chemistry
- The George Washington University
- 800 22nd Street
- NW
- USA
| | - Lucas C. Ducati
- Department of Fundamental Chemistry Institute of Chemistry
- University of São Paulo
- Av. Prof. Lineu Prestes 748
- Brazil
| | | | - Bruce K. McNamara
- Pacific Northwest National Laboratory
- 902 Battelle Boulevard
- Richland
- USA
| | - Jochen Autschbach
- Department of Chemistry
- University at Buffalo
- State University of New York
- 312 Natural Sciences Complex
- Buffalo
| | - Jon M. Schwantes
- Department of Fundamental Chemistry Institute of Chemistry
- University of São Paulo
- Av. Prof. Lineu Prestes 748
- Brazil
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20
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Brown JL, Gaunt AJ, King DM, Liddle ST, Reilly SD, Scott BL, Wooles AJ. Neptunium and plutonium complexes with a sterically encumbered triamidoamine (TREN) scaffold. Chem Commun (Camb) 2016; 52:5428-31. [PMID: 27009799 DOI: 10.1039/c6cc01656a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses and characterisation of isostructural neptunium(iv) and plutonium(iv) complexes [An(IV)(TREN(TIPS))(Cl)] [An = Np, Pu; TREN(TIPS) = {N(CH2CH2NSiPr(i)3)3}(3-)] are reported, along with the demonstration that they are likely reduced to the corresponding neptunium(iii) and plutonium(iii) products [An(III)(TREN(TIPS))]; this chemistry provides new platforms from which to target a plethora of unprecedented molecular functionalities in transuranic chemistry and the neptunium(iv) molecule is the first structurally characterised neptunium(iv)-amide complex.
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Affiliation(s)
- Jessie L Brown
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - David M King
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Stephen T Liddle
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Sean D Reilly
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Brian L Scott
- Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Ashley J Wooles
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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21
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Lewis FW, Harwood LM, Hudson MJ, Geist A, Kozhevnikov VN, Distler P, John J. Hydrophilic sulfonated bis-1,2,4-triazine ligands are highly effective reagents for separating actinides(iii) from lanthanides(iii) via selective formation of aqueous actinide complexes. Chem Sci 2015; 6:4812-4821. [PMID: 29142716 PMCID: PMC5667576 DOI: 10.1039/c5sc01328c] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/27/2015] [Indexed: 11/21/2022] Open
Abstract
Tetrasulfonated bis-1,2,4-triazine ligands can selectively complex and separate actinides from lanthanides in aqueous nitric acid with very high selectivities.
We report the first examples of hydrophilic 6,6′-bis(1,2,4-triazin-3-yl)-2,2′-bipyridine (BTBP) and 2,9-bis(1,2,4-triazin-3-yl)-1,10-phenanthroline (BTPhen) ligands, and their applications as actinide(iii) selective aqueous complexing agents. The combination of a hydrophobic diamide ligand in the organic phase and a hydrophilic tetrasulfonated bis-triazine ligand in the aqueous phase is able to separate Am(iii) from Eu(iii) by selective Am(iii) complex formation across a range of nitric acid concentrations with very high selectivities, and without the use of buffers. In contrast, disulfonated bis-triazine ligands are unable to separate Am(iii) from Eu(iii) in this system. The greater ability of the tetrasulfonated ligands to retain Am(iii) selectively in the aqueous phase than the corresponding disulfonated ligands appears to be due to the higher aqueous solubilities of the complexes of the tetrasulfonated ligands with Am(iii). The selectivities for Am(iii) complexation observed with hydrophilic tetrasulfonated bis-triazine ligands are in many cases far higher than those found with the polyaminocarboxylate ligands previously used as actinide-selective complexing agents, and are comparable to those found with the parent hydrophobic bis-triazine ligands. Thus we demonstrate a feasible alternative method to separate actinides from lanthanides than the widely studied approach of selective actinide extraction with hydrophobic bis-1,2,4-triazine ligands such as CyMe4-BTBP and CyMe4-BTPhen.
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Affiliation(s)
- Frank W Lewis
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK . .,Department of Applied Sciences , Faculty of Health and Life Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , UK .
| | - Laurence M Harwood
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK .
| | - Michael J Hudson
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK .
| | - Andreas Geist
- Karlsruher Institut für Technologie (KIT-INE) , Institut für Nukleare Entsorgung , Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen , Germany .
| | - Valery N Kozhevnikov
- Department of Applied Sciences , Faculty of Health and Life Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , UK .
| | - Petr Distler
- Department of Nuclear Chemistry , Czech Technical University in Prague , Břehová 7 , 115 19 Prague 1 , Czech Republic .
| | - Jan John
- Department of Nuclear Chemistry , Czech Technical University in Prague , Břehová 7 , 115 19 Prague 1 , Czech Republic .
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22
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Schnaars DD, Wilson RE. Lattice Solvent and Crystal Phase Effects on the Vibrational Spectra of UO2Cl42–. Inorg Chem 2014; 53:11036-45. [DOI: 10.1021/ic501553m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- David D. Schnaars
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Richard E. Wilson
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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23
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La Pierre HS, Meyer K. Activation of Small Molecules by Molecular Uranium Complexes. PROGRESS IN INORGANIC CHEMISTRY 2014. [DOI: 10.1002/9781118792797.ch05] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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24
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Jones MB, Gaunt AJ, Gordon JC, Kaltsoyannis N, Neu MP, Scott BL. Uncovering f-element bonding differences and electronic structure in a series of 1 : 3 and 1 : 4 complexes with a diselenophosphinate ligand. Chem Sci 2013. [DOI: 10.1039/c2sc21806b] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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25
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Löble MW, Oña-Burgos P, Fernández I, Apostolidis C, Morgenstern A, Walter O, Bruchertseifer F, Kaden P, Vitova T, Rothe J, Dardenne K, Banik NL, Geist A, Denecke MA, Breher F. Exploring the solution behavior of f-element coordination compounds: a case study on some trivalent rare earth and plutonium complexes. Chem Sci 2013. [DOI: 10.1039/c3sc50708d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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26
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27
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The Circuitous Journey from Malonamides to BTPhens. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/b978-0-08-099362-1.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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28
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Jones MB, Gaunt AJ. Recent developments in synthesis and structural chemistry of nonaqueous actinide complexes. Chem Rev 2012; 113:1137-98. [PMID: 23130707 DOI: 10.1021/cr300198m] [Citation(s) in RCA: 262] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew B Jones
- Inorganic, Isotope, and Actinide Group, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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29
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Reilly SD, Scott BL, Gaunt AJ. [N(n-Bu)4]2[Pu(NO3)6] and [N(n-Bu)4]2[PuCl6]: Starting Materials To Facilitate Nonaqueous Plutonium(IV) Chemistry. Inorg Chem 2012; 51:9165-7. [DOI: 10.1021/ic301518g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sean D. Reilly
- Chemistry
Division and ‡Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
| | - Brian L. Scott
- Chemistry
Division and ‡Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
| | - Andrew J. Gaunt
- Chemistry
Division and ‡Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
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30
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Lewis FW, Harwood LM, Hudson MJ, Drew MGB, Sypula M, Modolo G, Whittaker D, Sharrad CA, Videva V, Hubscher-Bruder V, Arnaud-Neu F. Complexation of lanthanides, actinides and transition metal cations with a 6-(1,2,4-triazin-3-yl)-2,2':6',2''-terpyridine ligand: implications for actinide(III)/lanthanide(III) partitioning. Dalton Trans 2012; 41:9209-19. [PMID: 22729349 DOI: 10.1039/c2dt30522d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The quadridentate N-heterocyclic ligand 6-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-2,2' : 6',2''-terpyridine (CyMe(4)-hemi-BTBP) has been synthesized and its interactions with Am(III), U(VI), Ln(III) and some transition metal cations have been evaluated by X-ray crystallographic analysis, Am(III)/Eu(III) solvent extraction experiments, UV absorption spectrophotometry, NMR studies and ESI-MS. Structures of 1:1 complexes with Eu(III), Ce(III) and the linear uranyl (UO(2)(2+)) ion were obtained by X-ray crystallographic analysis, and they showed similar coordination behavior to related BTBP complexes. In methanol, the stability constants of the Ln(III) complexes are slightly lower than those of the analogous quadridentate bis-triazine BTBP ligands, while the stability constant for the Yb(III) complex is higher. (1)H NMR titrations and ESI-MS with lanthanide nitrates showed that the ligand forms only 1:1 complexes with Eu(III), Ce(III) and Yb(III), while both 1:1 and 1:2 complexes were formed with La(III) and Y(III) in acetonitrile. A mixture of isomeric chiral 2:2 helical complexes was formed with Cu(I), with a slight preference (1.4:1) for a single directional isomer. In contrast, a 1:1 complex was observed with the larger Ag(I) ion. The ligand was unable to extract Am(III) or Eu(III) from nitric acid solutions into 1-octanol, except in the presence of a synergist at low acidity. The results show that the presence of two outer 1,2,4-triazine rings is required for the efficient extraction and separation of An(III) from Ln(III) by quadridentate N-donor ligands.
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Affiliation(s)
- Frank W Lewis
- Department of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, UK.
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31
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Hudson MJ, Harwood LM, Laventine DM, Lewis FW. Use of Soft Heterocyclic N-Donor Ligands To Separate Actinides and Lanthanides. Inorg Chem 2012; 52:3414-28. [DOI: 10.1021/ic3008848] [Citation(s) in RCA: 216] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Dominic M. Laventine
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Frank W. Lewis
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
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32
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Schnaars DD, Gaunt AJ, Hayton TW, Jones MB, Kirker I, Kaltsoyannis N, May I, Reilly SD, Scott BL, Wu G. Bonding Trends Traversing the Tetravalent Actinide Series: Synthesis, Structural, and Computational Analysis of AnIV(Aracnac)4 Complexes (An = Th, U, Np, Pu; Aracnac = ArNC(Ph)CHC(Ph)O; Ar = 3,5-tBu2C6H3). Inorg Chem 2012; 51:8557-66. [DOI: 10.1021/ic301109f] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- David D. Schnaars
- Department of Chemistry and
Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | | | - Trevor W. Hayton
- Department of Chemistry and
Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | | | - Ian Kirker
- Department
of Chemistry, University College London, 20 Gordon Street, London
WC1H 0AJ, United Kingdom
| | - Nikolas Kaltsoyannis
- Department
of Chemistry, University College London, 20 Gordon Street, London
WC1H 0AJ, United Kingdom
| | | | | | | | - Guang Wu
- Department of Chemistry and
Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
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33
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Minasian SG, Boland KS, Feller RK, Gaunt AJ, Kozimor SA, May I, Reilly SD, Scott BL, Shuh DK. Synthesis and Structure of (Ph4P)2MCl6 (M = Ti, Zr, Hf, Th, U, Np, Pu). Inorg Chem 2012; 51:5728-36. [DOI: 10.1021/ic300179d] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stefan G. Minasian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
| | | | | | | | | | | | | | | | - David K. Shuh
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
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34
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Lewis FW, Harwood LM, Hudson MJ, Drew MGB, Desreux JF, Vidick G, Bouslimani N, Modolo G, Wilden A, Sypula M, Vu TH, Simonin JP. Highly Efficient Separation of Actinides from Lanthanides by a Phenanthroline-Derived Bis-triazine Ligand. J Am Chem Soc 2011; 133:13093-102. [DOI: 10.1021/ja203378m] [Citation(s) in RCA: 268] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frank W. Lewis
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Jean F. Desreux
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Geoffrey Vidick
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Nouri Bouslimani
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Giuseppe Modolo
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Andreas Wilden
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Michal Sypula
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Trong-Hung Vu
- Laboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Jean-Pierre Simonin
- Laboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, France
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Schnaars DD, Batista ER, Gaunt AJ, Hayton TW, May I, Reilly SD, Scott BL, Wu G. Differences in actinide metal–ligand orbital interactions: comparison of U(iv) and Pu(iv) β-ketoiminate N,O donor complexes. Chem Commun (Camb) 2011; 47:7647-9. [DOI: 10.1039/c1cc12409a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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