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Wingering PMR, Hohnstein S, Krämer F, Dilanas MEA, Ruiz-Martínez C, Fernández I, Breher F. Synthesis, Crystal Structures, and Ion Pairing of κ 6 N Complexes with Rare-Earth Elements in the Solid State and in Solution. Chemistry 2023; 29:e202301529. [PMID: 37294063 DOI: 10.1002/chem.202301529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 06/10/2023]
Abstract
The rare earth element complexes (Ln=Y, La, Sm, Lu, Ce) of several podant κ6 N-coordinating ligands have been synthetized and thoroughly characterized. The structural properties of the complexes have been investigated by X-ray diffraction in the solid state and by advanced NMR methods in solution. To estimate the donor capabilities of the presented ligands, an experimental comparison study has been conducted by cyclic voltammetry as well as absorption experiments using the cerium complexes and by analyzing 89 Y NMR chemical shifts of the different yttrium complexes. In order to obtain a complete and detailed picture, all experiments were corroborated by state-of-the-art quantum chemical calculations. Finally, coordination competition studies have been carried out by means of 1 H and 31 P NMR spectroscopy to investigate the correlation with donor properties and selectivity.
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Affiliation(s)
- Perrine M R Wingering
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Silvia Hohnstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Felix Krämer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Melina E A Dilanas
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Cristina Ruiz-Martínez
- Laboratory of Organic Chemistry, University of Almería Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Ignacio Fernández
- Laboratory of Organic Chemistry, University of Almería Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Frank Breher
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
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2
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Relativistic effects on the chemical bonding properties of the heavier elements and their compounds. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.215000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Keot N, Sarma M. Computational insight into a mechanistic overview of water exchange kinetics and thermodynamic stabilities of bis and tris-aquated complexes of lanthanides. RSC Adv 2023; 13:1516-1529. [PMID: 36688060 PMCID: PMC9816859 DOI: 10.1039/d2ra05810c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/08/2022] [Indexed: 01/09/2023] Open
Abstract
A thorough investigation of Ln3+ complexes with more than one inner-sphere water molecule is crucial for designing high relaxivity contrast agents (CAs) used in magnetic resonance imaging (MRI). This study accomplished a comparative stability analysis of two hexadentate (H3cbda and H3dpaa) and two heptadentate (H4peada and H3tpaa) ligands with Ln3+ ions. The higher stability of the hexadentate H3cbda and heptadentate H4peada ligands has been confirmed by the binding affinity and Gibbs free energy analysis in aqueous solution. In addition, energy decomposition analysis (EDA) reveals the higher binding affinity of the peada4- ligand than the cbda3- ligand towards Ln3+ ions due to the higher charge density of the peada4- ligand. Moreover, a mechanistic overview of water exchange kinetics has been carried out based on the strength of the metal-water bond. The strength of the metal-water bond follows the trend Gd-O47 (w) > Gd-O39 (w) > Gd-O36 (w) in the case of the tris-aquated [Gd(cbda)(H2O)3] and Gd-O43 (w) > Gd-O40 (w) for the bis-aquated [Gd(peada)(H2O)2]- complex, which was confirmed by bond length, electron density (ρ), and electron localization function (ELF) at the corresponding bond critical points. Our analysis also predicts that the activation energy barrier decreases with the decrease in bond strength; hence k ex increases. The 17O and 1H hyperfine coupling constant values of all the coordinated water molecules were different, calculated by using the second-order Douglas-Kroll-Hess (DKH2) approach. Furthermore, the ionic nature of the bonding in the metal-ligand (M-L) bond was confirmed by the Quantum Theory of Atoms-In-Molecules (QTAIM) and ELF along with energy decomposition analysis (EDA). We hope that the results can be used as a basis for the design of highly efficient Gd(iii)-based high relaxivity MRI contrast agents for medical applications.
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Affiliation(s)
- Niharika Keot
- Department of Chemistry, Indian Institute of Technology GuwahatiAssam781039India+91 361 2582318
| | - Manabendra Sarma
- Department of Chemistry, Indian Institute of Technology GuwahatiAssam781039India+91 361 2582318
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4
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Beck NB, Bai Z, Brannon JP, Martinez DG, Grödler D, Long BN, Poe TN, Rotermund BM, Albrecht-Schönzart TE, Sperling JM. Two Neptunium(III) Mellitate Coordination Polymers: Completing the Series Np–Cf of Trans-Uranic An(III) Mellitates. Inorg Chem 2022; 61:17730-17737. [DOI: 10.1021/acs.inorgchem.2c02873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas B. Beck
- 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
| | - Jacob P. Brannon
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Daniela Gomez Martinez
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Dennis Grödler
- Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstr. 4-6, Cologne 50939, Germany
| | - Brian N. Long
- 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
| | - Brian M. Rotermund
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | | | - Joseph M. Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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5
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Köhler L, Patzschke M, Schmidt M, Stumpf T, März J. How 5 f Electron Polarisability Drives Covalency and Selectivity in Actinide N-Donor Complexes. Chemistry 2021; 27:18058-18065. [PMID: 34747538 PMCID: PMC9299701 DOI: 10.1002/chem.202102849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Indexed: 01/12/2023]
Abstract
We report a series of isostructural tetravalent actinide (Th, U−Pu) complexes with the N‐donor ligand N,N’‐ethylene‐bis((pyrrole‐2‐yl)methanimine) (H2L, H2pyren). Structural data from SC‐XRD analysis reveal [An(pyren)2] complexes with different An−Nimine versus An−Npyrrolide bond lengths. Quantum chemical calculations elucidated the bonding situation, including differences in the covalent character of the coordinative bonds. A comparison to the intensely studied analogous N,N′‐ethylene‐bis(salicylideneimine) (H2salen)‐based complexes [An(salen)2] displays, on average, almost equal electron sharing of pyren or salen with the AnIV, pointing to a potential ligand‐cage‐driven complex stabilisation. This is shown in the fixed ligand arrangement of pyren and salen in the respective AnIV complexes. The overall bond strength of the pure N‐donor ligand pyren to AnIV (An=Th, U, Np, Pu) is slightly weaker than to salen, with the exception of the PaIV complex, which exhibits extraordinarily high electron sharing of pyren with PaIV. Such an altered ligand preference within the early AnIV series points to a specificity of the 5f1 configuration, which can be explained by polarisation effects of the 5 f electrons, allowing the strongest f electron backbonding from PaIV (5f1) to the N donors of pyren.
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Affiliation(s)
- Luisa Köhler
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Michael Patzschke
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Moritz Schmidt
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Thorsten Stumpf
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Juliane März
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
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6
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Mason MM, Smith C, Vasiliu M, Carrick JD, Dixon DA. Prediction of An(III)/Ln(III) Separation by 1,2,4-Triazinylpyridine Derivatives. J Phys Chem A 2021; 125:6529-6542. [PMID: 34286991 DOI: 10.1021/acs.jpca.1c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of frustrated Lewis donors on metal selectivity between actinides and lanthanides was studied using a series of novel organic ligands. Structures and thermodynamic energies were predicted in the gas phase, in water, and in butanol using 9-coordinate, explicitly solvated (H2O) Eu, Gd, Am, and Cm in the +III oxidation state as reactants in the formation of complexes with 2-(6-[1,2,4]-triazin-3-yl-pyridin-2-yl)-1H-indole (Core 1), 3-[6-(2H-pyrazol-3-yl)pyridin-2-yl]-1,2,4-triazine (Core 2), and several derivatives. These complexations were studied using density functional theory (DFT) incorporating scalar relativistic effects on the actinides and lanthanides using a small core pseudopotential and corresponding basis set. A self-consistent reaction field approach was used to model the effect of water and butanol as solvents. Coordination preferences and metal selectivity are predicted for each ligand. Several ligands are predicted to have a high degree of selectivity, particularly when a low ionization potential in the ligand permits charge transfer to Eu(III), reducing it to Eu(II) and creating a half-filled f7 shell. Reasonable separation is predicted between Cm(III) and Gd(III) with Core 1 ligands, possibly due to ligand donor frustration. This separation is largely absent from Core 2 ligands, which are predicted to lose their frustration due to proton transfer from the 2N to the 3N position of the pyrazole component of the ligands via tautomerization.
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Affiliation(s)
- Marcos M Mason
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Caris Smith
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Jesse D Carrick
- Department of Chemistry, Tennessee Technological University, 803 Stadium Drive, Cookeville, Tennessee 38505-0001, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
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7
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Apostolidis C, Kovács A, Walter O, Colineau E, Griveau J, Morgenstern A, Rebizant J, Caciuffo R, Panak PJ, Rabung T, Schimmelpfennig B, Perfetti M. Tris-{hydridotris(1-pyrazolyl)borato}actinide Complexes: Synthesis, Spectroscopy, Crystal Structure, Bonding Properties and Magnetic Behaviour. Chemistry 2020; 26:11293-11306. [PMID: 32519790 PMCID: PMC7497007 DOI: 10.1002/chem.202001095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/26/2020] [Indexed: 01/10/2023]
Abstract
The isostructural compounds of the trivalent actinides uranium, neptunium, plutonium, americium, and curium with the hydridotris(1-pyrazolyl)borato (Tp) ligand An[η3 -HB(N2 C3 H3 )3 ]3 (AnTp3 ) have been obtained through several synthetic routes. Structural, spectroscopic (absorption, infrared, laser fluorescence) and magnetic characterisation of the compounds were performed in combination with crystal field, density functional theory (DFT) and relativistic multiconfigurational calculations. The covalent bonding interactions were analysed in terms of the natural bond orbital (NBO) and quantum theory of atoms in molecules (QTAIM) models.
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Affiliation(s)
| | - Attila Kovács
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | - Olaf Walter
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | - Eric Colineau
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | | | - Alfred Morgenstern
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | - Jean Rebizant
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | - Roberto Caciuffo
- European Commission, Joint Research CentrePostfach 234076125KarlsruheGermany
| | - Petra J. Panak
- Institut für Nukleare EntsorgungForschungszentrum KarlsruhePostfach 364076021KarlsruheGermany
| | - Thomas Rabung
- Institut für Nukleare EntsorgungForschungszentrum KarlsruhePostfach 364076021KarlsruheGermany
| | - Bernd Schimmelpfennig
- Institut für Nukleare EntsorgungForschungszentrum KarlsruhePostfach 364076021KarlsruheGermany
| | - Mauro Perfetti
- Department of ChemistryUniversity of CopenhagenUniversitetsparken 52100CopenhagenDenmark
- Department of Chemistry “Ugo Schiff” and INSTM Research UnitUniversity of FlorenceVia della Lastruccia 350019Sesto FiorentinoItaly
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8
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Jian T, Yu X, Dan D, Albrecht-Schmitt TE, Autschbach J, Gibson JK. Gas-Phase Complexes of Americium and Lanthanides with a Bis-triazinyl Pyridine: Reactivity and Bonding of Archetypes for F-Element Separations. J Phys Chem A 2020; 124:2982-2990. [PMID: 32207621 DOI: 10.1021/acs.jpca.0c00675] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bis-triazinyl pyridines (BTPs) exhibit solution selectivity for trivalent americium over lanthanides (Ln), the origins of which remain uncertain. Here, electrospray ionization was used to generate gas-phase complexes [ML3]3+, where M = La, Lu, or Am and L is EtBTP 2,6-bis(5,6-diethyl-1,2,4-triazin-3-yl)-pyridine. Collision-induced dissociation (CID) of [ML3]3+ in the presence of H2O yielded a protonated ligand [L(H)]+ and hydroxide [ML2(OH)]2+ or hydrate [ML(L-H)(H2O)]2+, where (L-H)- is a deprotonated ligand. Although solution affinities indicate stronger binding of BTPs toward Am3+ versus Ln3+, the observed CID process is contrastingly more facile for M = Am versus Ln. To understand the disparity, density functional theory was employed to compute potential energy surfaces for two possible CID processes, for M = La and Am. In accordance with the CID results, both the rate determining transition state barrier and the net energy are lower for [AmL3]3+ versus [LaL3]3+ and for both product isomers, [ML2(OH)]2+ and [ML(L-H)(H2O)]2+. More facile removal of a ligand from [AmL3]3+ by CID does not necessarily contradict stronger Am3+-L binding, as inferred from solution behavior. In particular, the formation of new bonds in the products can distort kinetics and thermodynamics expected for simple bond cleavage reactions. In addition to correctly predicting the seemingly anomalous CID behavior, the computational results indicate greater participation of Am 5f versus La 4f orbitals in metal-ligand bonding.
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Affiliation(s)
- Tian Jian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - David Dan
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Thomas E Albrecht-Schmitt
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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9
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Huang ZW, Hu KQ, Mei L, Kong XH, Yu JP, Liu K, Zeng LW, Chai ZF, Shi WQ. A mixed-ligand strategy regulates thorium-based MOFs. Dalton Trans 2020; 49:983-987. [DOI: 10.1039/c9dt04158c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A thorium-based MOF formed via the synergistic construction of porphyrin and bipyridyl based on the mixed-ligand strategy has the effect of enhancing photocatalysis.
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Affiliation(s)
- Zhi-wei Huang
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Kong-qiu Hu
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Xiang-he Kong
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Ji-pan Yu
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Kang Liu
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Li-wen Zeng
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
- Engineering Laboratory of Advanced Energy Materials
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry. Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
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10
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Zhang X, Kong X, Yuan L, Chai Z, Shi W. Coordination of Eu(III) with 1,10-Phenanthroline-2,9-dicarboxamide Derivatives: A Combined Study by MS, TRLIF, and DFT. Inorg Chem 2019; 58:10239-10247. [DOI: 10.1021/acs.inorgchem.9b01400] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xinrui Zhang
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- University of Chinese Academy of Science, Beijing 100049, People’s Republic of China
| | - Xianghe Kong
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Liyong Yuan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhifang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, People’s Republic of China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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11
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Kirschner KM, Ratvasky SC, Pink M, Zaleski JM. Anion Control of Lanthanoenediyne Cyclization. Inorg Chem 2019; 58:9225-9235. [PMID: 31257867 DOI: 10.1021/acs.inorgchem.9b00856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A suite of lanthanoenediyne complexes of the form Ln(macrocycle)X3 (Ln = La3+, Ce3+, Eu3+, Gd3+, Tb3+, Lu3+; X = NO3-, Cl-, OTf-) was prepared by utilizing an enediyne-containing [2 + 2] hexaaza-macrocycle (2). The solid-state Bergman cyclization temperatures, measured via DSC, decrease with the denticity of X (bidentate NO3-, T = 267-292 °C; monodentate Cl-, T = 238-262 °C; noncoordinating OTf-, T = 170-183 °C). 13C NMR characterization shows that the chemical shifts of the acetylenic carbon atoms also rely on the anion identity. The alkyne carbon closest to the metal binding site, CA, exhibits a Δδ > 3 ppm downfield shift, while the more distal alkyne carbon, CB, displays a concomitant Δδ ≤ 2.5 ppm upfield shift, reflecting a depolarization of the alkyne on metal inclusion. For all metals studied, the degree of perturbation follows the trend 2 < NO3- < Cl- < OTf-. This belies a greater degree of electronic rearrangement in the coordinated macrocycle as the denticity of X and its accompanying shielding of the metal's Lewis acidity decrease. Computationally modeled structures of LnX3 show a systematic increase in the lanthanide-2 coordination number (CNLa-mc = 2 (NO3-), 4 (Cl-), 5 (H2O, model for OTf-)) and a decrease in the mean Ln-N bond length (La-Naverage = 2.91 Å (NO3-), 2.78 Å (Cl-), 2.68 Å (H2O)), further suggesting that a decrease in the anion coordination number correlates with an increase in the metal-macrocycle interaction. Taken together, these data illustrate a Bergman cyclization landscape that is influenced by the bonding of metal to an enediyne ligand but whose reaction barrier is ultimately dominated by the coordinating ability of the accompanying anion.
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12
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Comparative Study of Complexes of Rare Earths and Actinides with 2,6-Bis(1,2,4-triazin-3-yl)pyridine. INORGANICS 2019. [DOI: 10.3390/inorganics7030026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Complexes of group III metals (rare earth and actinides) with 2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (BTP) have been investigated by computational (DFT) and, in limited cases, by experimental (FT-IR, X-ray) techniques with the goal of determining the characteristics of metal–ligand interactions. The DFT calculations using the M062X exchange-correlation functional revealed that metal–ligand distances correlate with the ionic radii of the metals, in agreement with available X-ray diffraction results on the Sc, Y, La, U, and Pu complexes. A related blue-shift trend could be observed in seven characteristic bands in the IR spectra associated with metal–ligand vibrations. The computations uncovered considerable charge transfer interactions, particularly in the actinide complexes, as important covalent contributions to the metal–ligand bonding. The covalent character of the metal–ligand bonds decreases in the actinides, from U to Cm.
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13
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Pagano JK, Arney DSJ, Scott BL, Morris DE, Kiplinger JL, Burns CJ. A sulphur and uranium fiesta! Synthesis, structure, and characterization of neutral terminal uranium(vi) monosulphide, uranium(vi) η2-disulphide, and uranium(iv) phosphine sulphide complexes. Dalton Trans 2019; 48:50-57. [DOI: 10.1039/c8dt02932f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new uranium species, (C5Me5)2U(N-2,6-iPr2-C6H3)(S), (C5Me5)2U(N-2,6-iPr2-C6H3)(η2-S2), and (C5Me5)2U(N-2,6-iPr2-C6H3)(SPMe3) have been prepared.
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14
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Decomposition of d- and f-Shell Contributions to Uranium Bonding from the Quantum Theory of Atoms in Molecules: Application to Uranium and Uranyl Halides. INORGANICS 2018. [DOI: 10.3390/inorganics6030088] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The electronic structures of a series of uranium hexahalide and uranyl tetrahalide complexes were simulated at the density functional theoretical (DFT) level. The resulting electronic structures were analyzed using a novel application of the Quantum Theory of Atoms in Molecules (QTAIM) by exploiting the high symmetry of the complexes to determine 5f- and 6d-shell contributions to bonding via symmetry arguments. This analysis revealed fluoride ligation to result in strong bonds with a significant covalent character while ligation by chloride and bromide species resulted in more ionic interactions with little differentiation between the ligands. Fluoride ligands were also found to be most capable of perturbing an existing electronic structure. 5f contributions to overlap-driven covalency were found to be larger than 6d contributions for all interactions in all complexes studied while degeneracy-driven covalent contributions showed significantly greater variation. σ-contributions to degeneracy-driven covalency were found to be consistently larger than those of individual π-components while the total π-contribution was, in some cases, larger. Strong correlations were found between overlap-driven covalent bond contributions, U–O vibrational frequencies, and energetic stability, which indicates that overlap-driven covalency leads to bond stabilization in these complexes and that uranyl vibrational frequencies can be used to quantitatively probe equatorial bond covalency. For uranium hexahalides, degeneracy-driven covalency was found to anti-correlate with bond stability.
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15
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Kovács A, Dau PD, Marçalo J, Gibson JK. Pentavalent Curium, Berkelium, and Californium in Nitrate Complexes: Extending Actinide Chemistry and Oxidation States. Inorg Chem 2018; 57:9453-9467. [PMID: 30040397 DOI: 10.1021/acs.inorgchem.8b01450] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pentavalent actinyl nitrate complexes AnVO2(NO3)2- were produced by elimination of two NO2 from AnIII(NO3)4- for An = Pu, Am, Cm, Bk, and Cf. Density functional theory (B3LYP) and relativistic multireference (CASPT2) calculations confirmed the AnO2(NO3)2- as AnVO2+ actinyl moieties coordinated by nitrates. Computations of alternative AnIIIO2(NO3)2- and AnIVO2(NO3)2- revealed significantly higher energies. Previous computations for bare AnO2+ indicated AnVO2+ for An = Pu, Am, Cf, and Bk, but CmIIIO2+: electron donation from nitrate ligands has here stabilized the first CmV complex, CmVO2(NO3)2-. Structural parameters and bonding analyses indicate increasing An-NO3 bond covalency from Pu to Cf, in accordance with principles for actinide separations. Atomic ionization energies effectively predict relative stabilities of oxidation states; more reliable energies are needed for the actinides.
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Affiliation(s)
- Attila Kovács
- European Commission, Joint Research Centre , P.O. Box 2340, 76125 Karlsruhe , Germany
| | - Phuong D Dau
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 United States
| | - Joaquim Marçalo
- Centro de Ciências e Tecnologias Nucleares & Centro de Química Estrutural , Instituto Superior Técnico, Universidade de Lisboa , 2695-066 Bobadela LRS , Portugal
| | - John K Gibson
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 United States
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16
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Huang PW, Wang CZ, Wu QY, Lan JH, Song G, Chai ZF, Shi WQ. Uncovering the impact of 'capsule' shaped amine-type ligands on Am(iii)/Eu(iii) separation. Phys Chem Chem Phys 2018; 20:1030-1038. [PMID: 29236107 DOI: 10.1039/c7cp05381a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Separation of trivalent actinides (An(iii)) and lanthanides (Ln(iii)) in spent nuclear fuel reprocessing is extremely challenging mainly owing to their similar chemical properties. Two amine-type reagents, tetrakis(2-pyridyl-methyl)-1,2-ethylenediamine (TPEN) and its hydrophobic derivative N,N,N',N'-tetrakis((4-butoxypyridin-2-yl)methyl)-ethylenediamine (TBPEN), have been identified to possess a selectivity for Am(iii) over Eu(iii). In this work, the structures, bonding nature, and thermodynamic behaviors of the Am(iii) and Eu(iii) complexes with these two ligands have been systematically studied via scalar relativistic density functional theory (DFT) calculations. According to Mayer bond order and the quantum theory of atoms in molecules (QTAIM) analyses, interactions between the ligands and metal cations exhibit some degree of covalent character with relatively more covalency for Am(iii) complexes. In comparison with TPEN, TBPEN has better extractability but worse separation ability for Am(iii) and Eu(iii). Four nitrogen atoms in pyridine moieties may be responsible for the different extraction abilities of TPEN and TBPEN, while two nitrogen atoms in amine chains of these ligands appear to play more important roles in the separation of Am(iii)/Eu(iii). These different extraction behaviors may be attributed to the longer and thinner 'capsule' shaped TBPEN ligand compared to TPEN. Our study might provide new insights into understanding the selectivity of the amine-type ligands toward minor actinides, and pave the way for designing new TPEN derivatives for extraction and separation of An(iii)/Ln(iii).
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Affiliation(s)
- Pin-Wen Huang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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17
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Huang PW, Wang CZ, Chai ZF, Shi WQ. A theoretical study on geometry, bonding nature, and stability of several anhydrous and hydrated In(III), Gd(III) and Yb(III) complexes in liquid scintillator solvents. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Di Pietro P, Kerridge A. Ligand size dependence of U–N and U–O bond character in a series of uranyl hexaphyrin complexes: quantum chemical simulation and density based analysis. Phys Chem Chem Phys 2017; 19:7546-7559. [DOI: 10.1039/c6cp08783c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A quantum chemical and density based analysis of bonding in uranyl hexaphyrin complexes, looking for trends in stability and covalency.
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19
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Fryer-Kanssen I, Austin J, Kerridge A. Topological Study of Bonding in Aquo and Bis(triazinyl)pyridine Complexes of Trivalent Lanthanides and Actinides: Does Covalency Imply Stability? Inorg Chem 2016; 55:10034-10042. [DOI: 10.1021/acs.inorgchem.6b00968] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Izaak Fryer-Kanssen
- Department of Chemistry, Lancaster University, Bailrigg,
Lancaster LA1 4YB, U.K
| | - Jonathan Austin
- National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington WA3 6AE, U.K
| | - Andrew Kerridge
- Department of Chemistry, Lancaster University, Bailrigg,
Lancaster LA1 4YB, U.K
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20
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Krahn E, Marie C, Nash K. Probing organic phase ligand exchange kinetics of 4f/5f solvent extraction systems with NMR spectroscopy. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Trumm M, Schimmelpfennig B. Towards the origin of effective An(III)/Ln(III) separation by tridentate N-donor ligands: a theoretical study on atomic charges and polarisabilities for Cm(III)/Gd(III) separation. Mol Phys 2016. [DOI: 10.1080/00268976.2015.1131862] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Michael Trumm
- Institut für Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Bernd Schimmelpfennig
- Institut für Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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22
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Di Pietro P, Kerridge A. Assessing covalency in equatorial U–N bonds: density based measures of bonding in BTP and isoamethyrin complexes of uranyl. Phys Chem Chem Phys 2016; 18:16830-9. [DOI: 10.1039/c6cp01273f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-donor complexes of uranyl have been investigated with density-based analytical methods in order to quantify equatorial bond covalency and its effect on axial U–Oyl bonding.
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23
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Kefalidis CE, Castro L, Perrin L, Rosal ID, Maron L. New perspectives in organolanthanide chemistry from redox to bond metathesis: insights from theory. Chem Soc Rev 2016; 45:2516-43. [DOI: 10.1039/c5cs00907c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A fifteen year contribution of computational studies carried out in close synergy with experiments is summarized.
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24
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Wang J, Su D, Wang D, Ding S, Huang C, Huang H, Hu X, Wang Z, Li S. Selective Extraction of Americium(III) over Europium(III) with the Pyridylpyrazole Based Tetradentate Ligands: Experimental and Theoretical Study. Inorg Chem 2015; 54:10648-55. [DOI: 10.1021/acs.inorgchem.5b01452] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jieru Wang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Dongping Su
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Dongqi Wang
- Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Songdong Ding
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Chao Huang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Huang Huang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Xiaoyang Hu
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Zhipeng Wang
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
| | - Shimeng Li
- College of Chemistry, Sichuan University, Chengdu 610064, P.R. China
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25
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Regueiro-Figueroa M, Platas-Iglesias C. Toward the Prediction of Water Exchange Rates in Magnetic Resonance Imaging Contrast Agents: A Density Functional Theory Study. J Phys Chem A 2015; 119:6436-45. [DOI: 10.1021/acs.jpca.5b01728] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Martín Regueiro-Figueroa
- Departamento
de Química Fundamental, Universidade da Coruña, Campus
da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Carlos Platas-Iglesias
- Departamento
de Química Fundamental, Universidade da Coruña, Campus
da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
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26
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Huang QR, Kingham JR, Kaltsoyannis N. The strength of actinide-element bonds from the quantum theory of atoms-in-molecules. Dalton Trans 2015; 44:2554-66. [PMID: 25307773 DOI: 10.1039/c4dt02323d] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[AnX(3)](2)(μ-η(2):η(2)-N(2)) (An = Th-Pu; X = F, Cl, Br, Me, H, OPh) have been studied using relativistic density functional theory. Geometric and vibrational data suggest that metal→N(2) charge transfer maximises at the protactinium systems, which feature the longest N-N bonds and the smallest σ(N-N), as a result of partial population of the N-N π* orbitals. There is very strong correlation of the standard quantum theory of atoms-in-molecules (QTAIM) metrics - bond critical point ρ, ∇(2)ρ and H and delocalisation indices - with An-N and N-N bond lengths and σ(N-N), but the correlation with An-N interaction energies is very poor. A similar situation exists for the other systems studied; neutral and cationic actinide monoxide and dioxides, and AnL(3+) and AnL(3)(3+) (L = pyridine (Py), pyrazine (Pz) and triazine (Tz)) with the exception of some of the ∇(2)ρ data, for which moderate to good correlations with energy data are sometimes seen. By contrast, in almost all cases there is very strong correlation of interaction and bond energies with |ΔQ(QTAIM)(An)|, a simple QTAIM metric which measures the amount of charge transferred to or from the actinide on compound formation.
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Affiliation(s)
- Qian-Rui Huang
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
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27
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Liang YN, Yang X, Ding S, Li S, Wang F, Chai Z, Wang D. Computational thermodynamic study on the complexes of Am(iii) with tridentate N-donor ligands. NEW J CHEM 2015. [DOI: 10.1039/c5nj01285f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BTP differs from hemi-BTP and TPY in its conformational preference, which may contribute to its higher efficiency in extracting Am(iii).
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Affiliation(s)
- Yan-Ni Liang
- Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization
- Shaanxi University of Chinese Medicine
- Xianyang
- China
- Institute of Atomic and Molecular Physics
| | - Xia Yang
- Multidisciplinary Initiative Center
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing
- China
| | - Songdong Ding
- Institute of Atomic and Molecular Physics
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Shoujian Li
- Institute of Atomic and Molecular Physics
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Fan Wang
- Institute of Atomic and Molecular Physics
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Zhifang Chai
- Multidisciplinary Initiative Center
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing
- China
| | - Dongqi Wang
- Multidisciplinary Initiative Center
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing
- China
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28
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Narbutt J, Wodyński A, Pecul M. The selectivity of diglycolamide (TODGA) and bis-triazine-bipyridine (BTBP) ligands in actinide/lanthanide complexation and solvent extraction separation – a theoretical approach. Dalton Trans 2015; 44:2657-66. [DOI: 10.1039/c4dt02657h] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Charge transfer from the ligand to valence hybrid (mainly d) metal orbitals nearly equally stabilizes cationic EuIII and AmIII TODGA complexes.
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Affiliation(s)
- Jerzy Narbutt
- Institute of Nuclear Chemistry and Technology
- 03-195 Warsaw
- Poland
| | - Artur Wodyński
- Institute of Nuclear Chemistry and Technology
- 03-195 Warsaw
- Poland
- University of Warsaw
- Faculty of Chemistry
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29
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Yang X, Liang Y, Ding S, Li S, Chai Z, Wang D. Influence of a Bridging Group and the Substitution Effect of Bis(1,2,4-triazine) N-Donor Extractants on Their Interactions with a NpV Cation. Inorg Chem 2014; 53:7848-60. [DOI: 10.1021/ic500138w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xia Yang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yanni Liang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- College of Chemistry, Sichuan University, Chengdu, China
| | - Songdong Ding
- College of Chemistry, Sichuan University, Chengdu, China
| | - Shoujian Li
- College of Chemistry, Sichuan University, Chengdu, China
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- School of Radiation Medicine
and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou 215123, China
| | - Dongqi Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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30
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Shkrob IA, Marin TW, Jensen MP. Ionic Liquid Based Separations of Trivalent Lanthanide and Actinide Ions. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4036719] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ilya A. Shkrob
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Timothy W. Marin
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Chemistry
Department, Benedictine University, 5700 College Road, Lisle, Illinois 60532, United States
| | - Mark P. Jensen
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
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32
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Hoang TNY, Humbert-Droz M, Dutronc T, Guénée L, Besnard C, Piguet C. A Polyaromatic Terdentate Binding Unit with Fused 5,6-Membered Chelates for Complexing s-, p-, d-, and f-Block Cations. Inorg Chem 2013; 52:5570-80. [DOI: 10.1021/ic400526j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Thi Nhu Y Hoang
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
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33
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Banik NL, Denecke MA, Geist A, Modolo G, Panak PJ, Rothe J. 2,6-Bis(5,6-dipropyl-1,2,4-triazin-3-yl)-pyridine: Structures of An(III) and Ln(III) 1:3 complexes and selectivity. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.11.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Hosseinnejad T, Ahmadi SJ, Karimi-Jafari MH. Computational study on the structure and properties of ternary complexes of Ln3+ (Ln = La, Ce, Nd AND Sm) with 5,7-dichloroquinoline-8-ol and 4-vinyl pyridine. J STRUCT CHEM+ 2013. [DOI: 10.1134/s0022476613020029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Hancock RD, Bartolotti LJ. A DFT study of the affinity of lanthanide and actinide ions for sulfur-donor and nitrogen-donor ligands in aqueous solution. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Panak PJ, Geist A. Complexation and Extraction of Trivalent Actinides and Lanthanides by Triazinylpyridine N-Donor Ligands. Chem Rev 2013; 113:1199-236. [DOI: 10.1021/cr3003399] [Citation(s) in RCA: 364] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Petra J. Panak
- Karlsruhe Institute of Technology,
Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe,
Germany
- Ruprecht-Karls-Universität
Heidelberg, Physikalisch Chemisches Institut (PCI), Im Neuenheimer
Feld 253, 69120 Heidelberg, Germany
| | - Andreas Geist
- Karlsruhe Institute of Technology,
Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe,
Germany
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37
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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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38
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Mountain ARE, Kaltsoyannis N. Do QTAIM metrics correlate with the strength of heavy element–ligand bonds? Dalton Trans 2013; 42:13477-86. [DOI: 10.1039/c3dt51337h] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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39
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Hancock RD. The pyridyl group in ligand design for selective metal ion complexation and sensing. Chem Soc Rev 2013; 42:1500-24. [DOI: 10.1039/c2cs35224a] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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40
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Raut DR, Mohapatra PK, Ansari SA, Godbole SV, Iqbal M, Manna D, Ghanty TK, Huskens J, Verboom W. Complexation of trivalent lanthanides and actinides with several novel diglycolamide-functionalized calix[4]arenes: solvent extraction, luminescence and theoretical studies. RSC Adv 2013. [DOI: 10.1039/c3ra40241j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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41
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Guillet GL, Hyatt IFD, Hillesheim PC, Abboud KA, Scott MJ. 1,2,4-Triazine-picolinamide functionalized, nonadentate chelates for the segregation of lanthanides(iii) and actinides(iii) in biphasic systems. NEW J CHEM 2013. [DOI: 10.1039/c2nj40586e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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42
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Adam C, Kaden P, Beele BB, Müllich U, Trumm S, Geist A, Panak PJ, Denecke MA. Evidence for covalence in a N-donor complex of americium(iii). Dalton Trans 2013; 42:14068-74. [DOI: 10.1039/c3dt50953b] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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43
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Carolan AN, Cockrell GM, Williams NJ, Zhang G, VanDerveer DG, Lee HS, Thummel RP, Hancock. RD. Selectivity of the Highly Preorganized Tetradentate Ligand 2,9-Di(pyrid-2-yl)-1,10-phenanthroline for Metal Ions in Aqueous Solution, Including Lanthanide(III) Ions and the Uranyl(VI) Cation. Inorg Chem 2012; 52:15-27. [DOI: 10.1021/ic3002509] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ashley N. Carolan
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Gregory M. Cockrell
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Neil J. Williams
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Gang Zhang
- Department
of Chemistry, University of Houston, Houston,
Texas 77004, United States
| | - Donald G. VanDerveer
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Hee-Seung Lee
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Randolph P. Thummel
- Department
of Chemistry, University of Houston, Houston,
Texas 77004, United States
| | - Robert D. Hancock.
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
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44
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Rodríguez-Rodríguez A, Esteban-Gómez D, de Blas A, Rodríguez-Blas T, Botta M, Tripier R, Platas-Iglesias C. Solution Structure of Ln(III) Complexes with Macrocyclic Ligands Through Theoretical Evaluation of 1H NMR Contact Shifts. Inorg Chem 2012; 51:13419-29. [DOI: 10.1021/ic302322r] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Aurora Rodríguez-Rodríguez
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - David Esteban-Gómez
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Andrés de Blas
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Teresa Rodríguez-Blas
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale “Amedeo Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
| | - Raphaël Tripier
- Université de Bretagne Occidentale, UMR-CNRS 6521, UFR des Sciences et Techniques, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
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45
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The coordination and organometallic chemistry of UI3 and U{N(SiMe3)2}3: Synthetic reagents par excellence. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.09.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Density functional dependence of molecular geometries in lanthanide(III) complexes relevant to bioanalytical and biomedical applications. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.08.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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47
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Esrafili MD, Alizadeh V. A theoretical study on bonding and energy aspects of and [LnL3 · H2O]3+complexes (Ln = La, Eu, Gd, L · u; L = β-diketone, β-dithioketone, β-diphosphine oxide). Mol Phys 2012. [DOI: 10.1080/00268976.2012.670279] [Citation(s) in RCA: 2] [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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48
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Lan JH, Shi WQ, Yuan LY, Li J, Zhao YL, Chai ZF. Recent advances in computational modeling and simulations on the An(III)/Ln(III) separation process. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.04.002] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kaltsoyannis N. Does covalency increase or decrease across the actinide series? Implications for minor actinide partitioning. Inorg Chem 2012; 52:3407-13. [PMID: 22668004 DOI: 10.1021/ic3006025] [Citation(s) in RCA: 278] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A covalent chemical bond carries the connotation of overlap of atomic orbitals between bonded atoms, leading to a buildup of the electron density in the internuclear region. Stabilization of the valence 5f orbitals as the actinide series is crossed leads, in compounds of the minor actinides americium and curium, to their becoming approximately degenerate with the highest occupied ligand levels and hence to the unusual situation in which the resultant valence molecular orbitals have significant contributions from both actinide and the ligand yet in which there is little atomic orbital overlap. In such cases, the traditional quantum-chemical tools for assessing the covalency, e.g., population analysis and spin densities, predict significant metal-ligand covalency, although whether this orbital mixing is really covalency in the generally accepted chemical view is an interesting question. This review discusses our recent analyses of the bonding in AnCp3 and AnCp4 (An = Th-Cm; Cp = η(5)-C5H5) using both the traditional tools and also topological analysis of the electron density via the quantum theory of atoms-in-molecules. I will show that the two approaches yield rather different conclusions and suggest that care must be taken when using quantum chemistry to assess metal-ligand covalency in this part of the periodic table. The implications of this work for minor actinide partitioning from nuclear wastes are discussed; minor actinide extractant ligands based on nitrogen donors have received much attention in recent years, as have comparisons of the extent of covalency in actinide-nitrogen bonding with that in analogous lanthanide systems via quantum-chemical studies employing the traditional tools for assessing the covalency.
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Affiliation(s)
- Nikolas Kaltsoyannis
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
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Bremer A, Ruff CM, Girnt D, Müllich U, Rothe J, Roesky PW, Panak PJ, Karpov A, Müller TJJ, Denecke MA, Geist A. 2,6-Bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine as a Ligand for Efficient Actinide(III)/Lanthanide(III) Separation. Inorg Chem 2012; 51:5199-207. [DOI: 10.1021/ic3000526] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antje Bremer
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Christian M. Ruff
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Denise Girnt
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Udo Müllich
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Jörg Rothe
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Peter W. Roesky
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Petra J. Panak
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Alexei Karpov
- Institut für Organische
Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1,
40225 Düsseldorf, Germany
| | - Thomas J. J. Müller
- Institut für Organische
Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1,
40225 Düsseldorf, Germany
| | - Melissa A. Denecke
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Andreas Geist
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
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