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Ferrier MG, Childs BC, Silva CM, Greenough MM, Moore EE, Erickson KA, Monreal MJ, Colla CA, Marple MAT, Winston LD, Burks JN, Martin AA, Jeffries JR, Holliday KS. Laser-Induced Thermal Decomposition of Uranium Coordination Compounds with Non-oxidic Ligands to Produce Nitride and Carbide Materials. Inorg Chem 2024; 63:1938-1946. [PMID: 38232376 DOI: 10.1021/acs.inorgchem.3c03591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The production of ceramics from uranium coordination compounds can be achieved through thermal processing if an excess amount of the desired atoms (i.e., C or N), or reactive gaseous products (e.g., methane or nitrogen oxide) is made available to the reactive uranium metal core via decomposition/fragmentation of the surrounding ligand groups. Here, computational thermodynamic approaches were utilized to identify the temperatures necessary to produce uranium metal from some starting compounds─UI4(TMEDA)2, UCl4(TMEDA)2, UCl3(pyridine)x, and UI3(pyridine)4. Experimentally, precursors were irradiated by a laser under various gaseous environments (argon, nitrogen, and methane) creating extreme reaction conditions (i.e., fast heating, high temperature profile >2000 °C, and rapid cooling). Despite the fast dynamics associated with laser irradiation, the central uranium atom reacted with the thermal decomposition products of the ligands yielding uranium ceramics. Residual gas analysis identified vaporized products from the laser irradiation, and the final ceramic products were characterized by powder X-ray diffraction. The composition of the uranium precursor as well as the gaseous environment had a direct impact on the production of the final phases.
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Affiliation(s)
- Maryline G Ferrier
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Bradley C Childs
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Chinthaka M Silva
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Michelle M Greenough
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Emily E Moore
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Karla A Erickson
- Chemical, Earth and Life Sciences Directorate, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, United States
| | - Marisa J Monreal
- Chemical, Earth and Life Sciences Directorate, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, United States
| | - Christopher A Colla
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Maxwell A T Marple
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Logan D Winston
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Janae N Burks
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
- Spelman College, 350 Spelman Ln SW, Atlanta, Georgia 30314, United States
| | - Aiden A Martin
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Jason R Jeffries
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Kiel S Holliday
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
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2
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Hanna SL, Farha OK. Energy-structure-property relationships in uranium metal-organic frameworks. Chem Sci 2023; 14:4219-4229. [PMID: 37123191 PMCID: PMC10132172 DOI: 10.1039/d3sc00788j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/02/2023] [Indexed: 05/02/2023] Open
Abstract
Located at the foot of the periodic table, uranium is a relatively underexplored element possessing rich chemistry. In addition to its high relevance to nuclear power, uranium shows promise for small molecule activation and photocatalysis, among many other powerful functions. Researchers have used metal-organic frameworks (MOFs) to harness uranium's properties, and in their quest to do so, have discovered remarkable structures and unique properties unobserved in traditional transition metal MOFs. More recently, (e.g. the last 8-10 years), theoretical calculations of framework energetics have supplemented structure-property studies in uranium MOFs (U-MOFs). In this Perspective, we summarize how these budding energy-structure-property relationships in U-MOFs enable a deeper understanding of chemical phenomena, enlarge chemical space, and elevate the field to targeted, rather than exploratory, discovery. Importantly, this Perspective encourages interdisciplinary connections between experimentalists and theorists by demonstrating how these collaborations have elevated the entire U-MOF field.
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Affiliation(s)
- Sylvia L Hanna
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University Evanston IL 60208 USA
| | - Omar K Farha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University Evanston IL 60208 USA
- Department of Chemical and Biological Engineering, Northwestern University Evanston IL 60208 USA
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3
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Ghosh S, Srivastava AK, Sharma M, Pal S. Chiral Diuranyl(VI) Complexes and Their Catecholase Activities: Experimental and Theoretical Insights. ChemistrySelect 2022. [DOI: 10.1002/slct.202200293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sabari Ghosh
- School of Chemistry University of Hyderabad Hyderabad 500046 India
| | | | - Manju Sharma
- School of Chemistry University of Hyderabad Hyderabad 500046 India
| | - Samudranil Pal
- School of Chemistry University of Hyderabad Hyderabad 500046 India
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Functionalized Tris(anilido)triazacyclononanes as Hexadentate Ligands for the Encapsulation of U(III), U(IV) and La(III) Cations. INORGANICS 2021. [DOI: 10.3390/inorganics9120086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Tripodal multidentate ligands have become increasingly popular in f-element chemistry for stabilizing unusual bonding motifs and supporting small molecule activation processes. The steric and electronic effects of ligand donor atom substituents have proved crucial in both of these applications. In this study we functionalized the previously reported tris-anilide ligand {tacn(SiMe2NPh)3} (tacn = 1,3,7-triazacyclononane) to incorporate substituted aromatic rings, with the aim of modifying f-element complex solubility and ligand steric effects. We report the synthesis of two proligands, {tacn(SiMe2NHAr)3} (Ar = C6H3Me2-3,5 or C6H4Me-4), and their respective group 1 transfer agents—{tacn(SiMe2NKAr)3}, M(III) complexes [M{tacn(SiMe2NAr)3}] for M = La and U, and U(IV) complexes [M{tacn(SiMe2NAr)3}(Cl)]. These compounds were characterized by multinuclear NMR and FTIR spectroscopy and elemental analysis. The paramagnetic uranium complexes were also characterized by solid state magnetic measurements and UV/Vis/NIR spectroscopy. U(III) complexes were additionally studied by EPR spectroscopy. The solid state structures of all f-block complexes were authenticated by single-crystal X-ray diffraction (XRD), together with a minor byproduct [U{tacn(SiMe2NC6H4Me-4)3}(I)]. Comparisons of the characterization data of our f-element complexes with similar literature examples containing the {tacn(SiMe2NPh)3} ligand set showed minor changes in physicochemical properties resulting from the different aromatic ring substitution patterns we investigated.
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Boreen MA, Gould CA, Booth CH, Hohloch S, Arnold J. Structure and magnetism of a tetrahedral uranium(iii) β-diketiminate complex. Dalton Trans 2020; 49:7938-7944. [PMID: 32495782 DOI: 10.1039/d0dt01599g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the functionalisation of the previously reported uranium(iii) β-diketiminate complex (BDI)UI2(THF)2 (1) with one and two equivalents of a sterically demanding 2,6-diisopropylphenolate ligand (ODipp) leading to the formation of two heteroleptic complexes: [(BDI)UI(ODipp)]2 (2) and (BDI)U(ODipp)2 (3). The latter is a rare example of a tetrahedral uranium(iii) complex, and it shows single-molecule magnet behaviour.
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Affiliation(s)
- Michael A Boreen
- Department of Chemistry, University of California, Berkeley, California 94720, USA.
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Jori N, Falcone M, Scopelliti R, Mazzanti M. Carbon Dioxide Reduction by Multimetallic Uranium(IV) Complexes Supported by Redox-Active Schiff Base Ligands. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00792] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nadir Jori
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Marta Falcone
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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Boreen MA, Arnold J. The synthesis and versatile reducing power of low-valent uranium complexes. Dalton Trans 2020; 49:15124-15138. [DOI: 10.1039/d0dt03151h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This synthesis and diverse reactivity of uranium(iii) and uranium(ii) complexes is discussed.
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Affiliation(s)
- Michael A. Boreen
- 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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8
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Leduc J, Frank M, Jürgensen L, Graf D, Raauf A, Mathur S. Chemistry of Actinide Centers in Heterogeneous Catalytic Transformations of Small Molecules. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04924] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jennifer Leduc
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Michael Frank
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Lasse Jürgensen
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - David Graf
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Aida Raauf
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
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9
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Dioxidomolybdenum(VI) and dioxidouranium(VI) complexes as functional mimic of haloperoxidases catalytic activity in presence of H2O2–KBr–HClO4. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Meng D, Pu N, Mei L, Sun T, Xu L, Shi W, Chen J, Xu C. Complexation of U(VI) with diphenyldithiophosphinic acid: spectroscopy, structure and DFT calculations. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5844-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Hohloch S, Garner ME, Parker BF, Arnold J. New supporting ligands in actinide chemistry: tetramethyltetraazaannulene complexes with thorium and uranium. Dalton Trans 2018; 46:13768-13782. [PMID: 28959804 DOI: 10.1039/c7dt02682j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the synthesis, characterization, and preliminary reactivity of new heteroleptic thorium and uranium complexes supported by the macrocyclic TMTAA ligand (TMTAA = Tetramethyl-tetra-aza-annulene). The dihalide complexes Th(TMTAA)Cl2(THF)2 (1), [UCl2(TMTAA)]2 (2) and U(TMTAA)I2 (3) are further functionalized to the Cp* derivatives ThCp*(TMTAA)Cl (4), UCp*(TMTAA)Cl (5) and UCp*(TMTAA)I (6) (Cp* = pentamethylcyclopentadienide). Compounds 4-6 are also obtained through a one-pot reaction from standard thorium(iv) and uranium(iv) starting materials, Li2TMTAA and KCp*. Complexes 1-6 function as valuable starting materials for salt metathesis chemistry. Treatment of precursors 4 or 5 with trimethylsilylmethyllithium (LiCH2TMS) results in the new actinide TMTAA alkyl complexes ThCp*(TMTAA)(CH2TMS) (7) and UCp*(TMTAA)(CH2TMTS) (8), respectively. The TMTAA-derived alkyl complexes (7 and 8) show unexpected stability and are stable for several weeks at room temperature in solution and in the solid-state. Additionally, double substitution of the halide ligands in 1-3 shows a strong dependence on the nucleophile used. While weaker nucleophiles, such as amides, and more sterically demanding nucleophiles, such as Cp (Cp = cyclopenadienide), favour the formation of bis-TMTAA "sandwich" complexes [An(TMTAA)2] (An = Th (9) and An = U (10)), the use of oxygen-functionalized ligands like the ODipp anion (Dipp = diisopropylphenyl) results in the formation of the doubly substituted species Th(ODipp)2TMTAA (11) and U(ODipp)2TMTAA (12). We also describe the divergent reactivity of the TMTAA ligand towards uranium(iii). Unlike the syntheses of actinide(iv) TMTAA complexes, the synthesis of a uranium(iii) TMTAA was not successful and only uranium(iv) species could be obtained.
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Affiliation(s)
- Stephan Hohloch
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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12
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Liu W, Xie J, Zhang L, Silver MA, Wang S. A hydrolytically stable uranyl organic framework for highly sensitive and selective detection of Fe3+ in aqueous media. Dalton Trans 2018; 47:649-653. [DOI: 10.1039/c7dt04365a] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A depleted uranium-based metal organic framework is synthesized and it exhibits highly sensitive and selective detection towards Fe3+ ions in aqueous media with an extremely low detection limit of 6.3 ppb.
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Affiliation(s)
- Wei Liu
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
| | - Jian Xie
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
| | - Linmeng Zhang
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
| | - Mark A. Silver
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
| | - Shuao Wang
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
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13
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Zhao HB, Zheng M, Schreckenbach G, Pan QJ. Interfacial Interaction of Titania Nanoparticles and Ligated Uranyl Species: A Relativistic DFT Investigation. Inorg Chem 2017; 56:2763-2776. [DOI: 10.1021/acs.inorgchem.6b02927] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong-Bo Zhao
- Key Laboratory of
Functional Inorganic Material Chemistry of Education Ministry, School
of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Ming Zheng
- Key Laboratory of
Functional Inorganic Material Chemistry of Education Ministry, School
of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg R3T 2N2, MB, Canada
| | - Qing-Jiang Pan
- Key Laboratory of
Functional Inorganic Material Chemistry of Education Ministry, School
of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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14
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Qu N, Zhong YX, Schreckenbach G, Pan QJ. A computational investigation of polypyrrolic macrocyclic actinyl complexes: effects of explicit solvent coordination on structure, vibrational spectra and redox property. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1959-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Yin H, Carroll PJ, Schelter EJ. Cerium(III) and Uranium(IV) Complexes of the 2-Fluorophenyl Trimethylsilyl Amide Ligand: C–F → Ln/An Interactions that Modulate the Coordination Spheres of f-Block Elements. Inorg Chem 2016; 55:5684-92. [DOI: 10.1021/acs.inorgchem.6b00785] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Haolin Yin
- P. Roy
and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231
South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J. Carroll
- P. Roy
and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231
South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Eric J. Schelter
- P. Roy
and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231
South 34 Street, Philadelphia, Pennsylvania 19104, United States
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16
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Liddle ST. The Renaissance of Non-Aqueous Uranium Chemistry. Angew Chem Int Ed Engl 2015; 54:8604-41. [PMID: 26079536 DOI: 10.1002/anie.201412168] [Citation(s) in RCA: 347] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/29/2015] [Indexed: 12/11/2022]
Abstract
Prior to the year 2000, non-aqueous uranium chemistry mainly involved metallocene and classical alkyl, amide, or alkoxide compounds as well as established carbene, imido, and oxo derivatives. Since then, there has been a resurgence of the area, and dramatic developments of supporting ligands and multiply bonded ligand types, small-molecule activation, and magnetism have been reported. This Review 1) introduces the reader to some of the specialist theories of the area, 2) covers all-important starting materials, 3) surveys contemporary ligand classes installed at uranium, including alkyl, aryl, arene, carbene, amide, imide, nitride, alkoxide, aryloxide, and oxo compounds, 4) describes advances in the area of single-molecule magnetism, and 5) summarizes the coordination and activation of small molecules, including carbon monoxide, carbon dioxide, nitric oxide, dinitrogen, white phosphorus, and alkanes.
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Affiliation(s)
- Stephen T Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK).
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18
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Arnold PL, Prescimone A, Farnaby JH, Mansell SM, Parsons S, Kaltsoyannis N. Characterizing pressure-induced uranium C-H agostic bonds. Angew Chem Int Ed Engl 2015; 54:6735-9. [PMID: 25882329 PMCID: PMC4515102 DOI: 10.1002/anie.201411250] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 02/20/2015] [Indexed: 12/28/2022]
Abstract
The diuranium(III) compound [UN''2]2(μ-η(6):η(6)-C6H6) (N''=N(SiMe3)2) has been studied using variable, high-pressure single-crystal X-ray crystallography, and density functional theory . In this compound, the low-coordinate metal cations are coupled through π- and δ-symmetric arene overlap and show close metal-CH contacts with the flexible methyl CH groups of the sterically encumbered amido ligands. The metal-metal separation decreases with increasing pressure, but the most significant structural changes are to the close contacts between ligand CH bonds and the U centers. Although the interatomic distances are suggestive of agostic-type interactions between the U and ligand peripheral CH groups, QTAIM (quantum theory of atoms-in-molecules) computational analysis suggests that there is no such interaction at ambient pressure. However, QTAIM and NBO analyses indicate that the interaction becomes agostic at 3.2 GPa.
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Affiliation(s)
- Polly L Arnold
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FJ (UK).
| | - Alessandro Prescimone
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FJ (UK)
- Current address: Department of Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel (Switzerland)
| | - Joy H Farnaby
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FJ (UK)
- Current address: Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ (UK)
| | - Stephen M Mansell
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FJ (UK)
- Current address: Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS (UK)
| | - Simon Parsons
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FJ (UK).
| | - Nikolas Kaltsoyannis
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ (UK).
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19
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Arnold PL, Prescimone A, Farnaby JH, Mansell SM, Parsons S, Kaltsoyannis N. Characterizing Pressure-Induced Uranium CH Agostic Bonds. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411250] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Vats BG, Kannan S, Parvathi K, Maity D, Drew M. Steric effects in complexes of diphenyl(2-pyridyl)phosphine oxide with the uranyl ion. Synthetic, structural and theoretical studies. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.12.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Karmel ISR, Fridman N, Eisen MS. Actinide Amidinate Complexes with a Dimethylamine Side Arm: Synthesis, Structural Characterization, and Reactivity. Organometallics 2015. [DOI: 10.1021/om501179e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Isabell S. R. Karmel
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Israel
| | - Natalia Fridman
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Israel
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Israel
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22
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Tecmer P, Boguslawski K, Ayers PW. Singlet ground state actinide chemistry with geminals. Phys Chem Chem Phys 2015; 17:14427-36. [DOI: 10.1039/c4cp05293e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the first application of the variationally orbital optimized antisymmetric product of 1-reference orbital geminals (vOO-AP1roG) method to singlet-state actinide chemistry.
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Affiliation(s)
- Paweł Tecmer
- Department of Chemistry and Chemical Biology
- McMaster University
- Canada
| | | | - Paul W. Ayers
- Department of Chemistry and Chemical Biology
- McMaster University
- Canada
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23
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Das D, Vats B, Kannan S, Kumar M, Sureshkumar M. Synthetic and structural studies of piperidine carboxamide uranyl ion complexes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Vats B, Kannan S, Pius I, Noronha D, Maity D, Drew M. Synthetic, structural, extraction and theoretical studies of uranyl nitrate dithio-diglycolamide compounds. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Structural/electronic properties and reaction energies of a series of mono- and bis-uranyl dihalides equatorially coordinated by N/O ligands. J Mol Model 2014; 20:2305. [PMID: 24869781 DOI: 10.1007/s00894-014-2305-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/12/2014] [Indexed: 10/25/2022]
Abstract
Monometallic (UO2)(X)2(L)3 (L = pyridine (py), X = F (1), Cl (2), Br (3) and I (4); L = tetrahydrofuran (thf), X = Cl (5); L = pyrrole (pl), X = Cl (6)) as well as bimetallic [(UO2)(μ2-X)(X)(L)2]2 (L = py, X = F (7), Cl (8), Br (9) and I (10); L = thf, X = Cl (11); L = pl, X = Cl (12); μ 2 = doubly bridged) were examined using relativistic density functional theory. With changing from F, Cl, Br to I irregardless of in mono- or bis-uranyl complexes, bond lengths of U = O were calculated to be decreasing, resulting from strengthening of axial U = O bonds while weakening equatorial X → U coordination. This is further evidenced by calculated bond orders of U = O and stretching vibrational frequencies. A similar situation was is found in 2, 5 and 6 as well as in 8, 11 and 12, where N/O ligands are varied but the chlorine atoms are retained. The present study reveals that all these complexes have U(f)-character low-lying unoccupied orbitals, and their π*(U = O) antibonds are located on higher-energy orbitals. Complex 1 was calculated to show σ(U = O) bonding character for HOMO, and pyridine-character for other occupied orbitals; the fluorine ligand occurs in a relatively low-energy region. In contrast, the π(p) characters of heavier halogen atoms significantly contribute to most frontier molecular orbitals of 2, 3 and 4. Unlike this electronic feature of 2, complexes 5 and 6 exhibit mainly thf and pyrrole characters, respectively, for their high-lying occupied orbitals. Electronic structures of bisuranyl complexes 7-12, albeit a little more complicated, are revealed to be similar to those of the corresponding monouranyl complexes. Finally, energies of formation reactions of the above complexes were calculated and compared with available experimental results.
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Copping R, Jeon B, Pemmaraju CD, Wang S, Teat SJ, Janousch M, Tyliszczak T, Canning A, Grønbech-Jensen N, Prendergast D, Shuh DK. Toward equatorial planarity about uranyl: synthesis and structure of tridentate nitrogen-donor {UO2}2+ complexes. Inorg Chem 2014; 53:2506-15. [PMID: 24528285 DOI: 10.1021/ic4026359] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of UO2Cl2·3THF with the tridentate nitrogen donor ligand 2,6-bis(2-benzimidazolyl)pyridine (H2BBP) in pyridine leads to the formation of three different complexes: [(UO2)(H2BBP)Cl2] (1), [(UO)2(HBBP)(Py)Cl] (2), and [(UO2)(BBP)(Py)2] (3) after successive deprotonation of H2BBP with a strong base. Crystallographic determination of 1-3 reveals that increased charge through ligand deprotonation and displacement of chloride leads to equatorial planarity about uranyl as well as a more compact overall coordination geometry. Near-Edge X-ray Absorption Fine Structure (NEXAFS) spectra of 1-3 at the U-4d edges have been recorded using a soft X-ray Scanning Transmission X-ray Microscope (STXM) and reveal the uranium 4d5/2 and 4d3/2 transitions at energies associated with uranium in the hexavalent oxidation state. First-principles Density Functional Theory (DFT) electronic structure calculations for the complexes have been performed to determine and validate the coordination characteristics, which correspond well to the experimental results.
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Affiliation(s)
- Roy Copping
- Chemical Sciences Division, The Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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27
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Guo YR, Wu Q, Odoh SO, Schreckenbach G, Pan QJ. Theoretical Study of Structural, Spectroscopic and Reaction Properties of trans-bis(imido) Uranium(VI) Complexes. Inorg Chem 2013; 52:9143-52. [DOI: 10.1021/ic401440w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science & Technology of Education Ministry, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Qian Wu
- Key Laboratory
of Functional Inorganic Material Chemistry of Education Ministry,
School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Samuel O. Odoh
- Department
of Chemistry, University of Manitoba, Winnipeg,
MB, Canada R3T 2N2
- Environmental
Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352,
United States
| | - Georg Schreckenbach
- Department
of Chemistry, University of Manitoba, Winnipeg,
MB, Canada R3T 2N2
| | - Qing-Jiang Pan
- Key Laboratory
of Functional Inorganic Material Chemistry of Education Ministry,
School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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28
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Guo YR, Zhou X, Pan QJ. Relativistic theoretical studies on hydrogen bonds and the electronic structure of aqueous solvated bis(uranyl) complex: an insight into explicit and/or implicit solvent effects. J Mol Model 2013; 19:3325-32. [PMID: 23666033 DOI: 10.1007/s00894-013-1863-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 04/18/2013] [Indexed: 11/25/2022]
Affiliation(s)
- Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science and Technology of Education Ministry, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
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29
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Sather AC, Berryman OB, Rebek J. Selective recognition and extraction of the uranyl ion from aqueous solutions with a recyclable chelating resin. Chem Sci 2013. [DOI: 10.1039/c3sc51507a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Abstract
Calixarenes represent a well-known family of macrocyclic molecules with broad range of potential applications in chemical, analytical, and engineering materials fields. This paper covers the use of calixarenes as complexing agents for uranium(VI). The high effectiveness of calix[6]arenes in comparison to other calixarenes in uranium(VI) separation process is also presented. Processes such as liquid-liquid extraction (LLE), liquid membrane (LM) separation, and ion exchange are considered as potential fields for application of calixarenes as useful agents for bindingUO22+for effective separation from aqueous solutions containing other metal components.
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31
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Yin H, Lewis AJ, Williams UJ, Carroll PJ, Schelter EJ. Fluorinated diarylamide complexes of uranium(iii,iv) incorporating ancillary fluorine-to-uranium dative interactions. Chem Sci 2013. [DOI: 10.1039/c2sc21458j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Pan QJ, Wang YM, Wang RX, Wu HY, Yang W, Sun ZM, Zhang HX. Bisactinyl halogenated complexes: relativistic density functional theory calculation and experimental synthesis. RSC Adv 2013. [DOI: 10.1039/c2ra21370b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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33
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Sather AC, Berryman OB, Moore CE, Rebek J. Uranyl ion coordination with rigid aromatic carboxylates and structural characterization of their complexes. Chem Commun (Camb) 2013; 49:6379-81. [DOI: 10.1039/c3cc43358g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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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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35
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Popov LD, Tupolova YP, Shcherbakov IN, Levchenkov SI, Suponitsky KY, Maevskiy OV, Kogan VA. A novel binuclear uranyl(VI) complex of bis(N,N′-3-carboxysalicylidene)-1,3-diaminopropan-2-ol: Synthesis, structure, and properties. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412090072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Das D, Kannan S, Maity DK, Drew MGB. Steric effects on uranyl complexation: synthetic, structural, and theoretical studies of carbamoyl pyrazole compounds of the uranyl(VI) ion. Inorg Chem 2012; 51:4869-76. [PMID: 22471744 DOI: 10.1021/ic300398a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New bifunctional pyrazole based ligands of the type [C(3)HR(2)N(2)CONR'] (where R = H or CH(3); R' = CH(3), C(2)H(5), or (i)C(3)H(7)) were prepared and characterized. The coordination chemistry of these ligands with uranyl nitrate and uranyl bis(dibenzoyl methanate) was studied with infrared (IR), (1)H NMR, electrospray-mass spectrometry (ES-MS), elemental analysis, and single crystal X-ray diffraction methods. The structure of compound [UO(2)(NO(3))(2)(C(3)H(3)N(2)CON{C(2)H(5)}(2))] (2) shows that the uranium(VI) ion is surrounded by one nitrogen atom and seven oxygen atoms in a hexagonal bipyramidal geometry with the ligand acting as a bidentate chelating ligand and bonds through both the carbamoyl oxygen and pyrazolyl nitrogen atoms. In the structure of [UO(2)(NO(3))(2)(H(2)O)(2)(C(5)H(7)N(2)CON {C(2)H(5)}(2))(2)], (5) the pyrazole ligand acts as a second sphere ligand and hydrogen bonds to the water molecules through carbamoyl oxygen and pyrazolyl nitrogen atoms. The structure of [UO(2)(DBM)(2)C(3)H(3)N(2)CON{C(2)H(5)}(2)] (8) (where DBM = C(6)H(5)COCHCOC(6)H(5)) shows that the pyrazole ligand acts as a monodentate ligand and bonds through the carbamoyl oxygen to the uranyl group. The ES-MS spectra of 2 and 8 show that the ligand is similarly bonded to the metal ion in solution. Ab initio quantum chemical studies show that the steric effect plays the key role in complexation behavior.
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Affiliation(s)
- Debasish Das
- Fuel Reprocessing Division, Bhabha Atomic Research Centre, Mumbai-400085, India
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37
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Mougel V, Horeglad P, Nocton G, Pécaut J, Mazzanti M. Cation-cation complexes of pentavalent uranyl: from disproportionation intermediates to stable clusters. Chemistry 2011; 16:14365-77. [PMID: 21053213 DOI: 10.1002/chem.201001929] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Three new cation-cation complexes of pentavalent uranyl, stable with respect to the disproportionation reaction, have been prepared from the reaction of the precursor [(UO(2)py(5))(KI(2)py(2))](n) (1) with the Schiff base ligands salen(2-), acacen(2-), and salophen(2-) (H(2)salen = N,N'-ethylene-bis(salicylideneimine), H(2)acacen = N,N'-ethylenebis(acetylacetoneimine), H(2)salophen = N,N'-phenylene-bis(salicylideneimine)). The preparation of stable complexes requires a careful choice of counter ions and reaction conditions. Notably the reaction of 1 with salophen(2-) in pyridine leads to immediate disproportionation, but in the presence of [18]crown-6 ([18]C-6) a stable complex forms. The solid-state structure of the four tetranuclear complexes, {[UO(2)(acacen)](4)[μ(8)-](2)[K([18]C-6)(py)](2)} (3) and {[UO(2)(acacen)](4)[μ(8)-]}⋅2 [K([222])(py)] (4), {[UO(2)(salophen)](4)[μ(8)-K](2)[μ(5)-KI](2)[(K([18]C-6)]}⋅2 [K([18]C-6)(thf)(2)]⋅2 I (5), and {[UO(2)(salen)(4)][μ(8)-Rb](2)[Rb([18]C-6)](2)} (9) ([222] = [222]cryptand, py = pyridine), presenting a T-shaped cation-cation interaction has been determined by X-ray crystallographic studies. NMR spectroscopic and UV/Vis studies show that the tetranuclear structure is maintained in pyridine solution for the salen and acacen complexes. Stable mononuclear complexes of pentavalent uranyl are also obtained by reduction of the hexavalent uranyl Schiff base complexes with cobaltocene in pyridine in the absence of coordinating cations. The reactivity of the complex [U(V)O(2)(salen)(py)][Cp*(2)Co] with different alkali ions demonstrates the crucial effect of coordinating cations on the stability of cation-cation complexes. The nature of the cation plays a key role in the preparation of stable cation-cation complexes. Stable tetranuclear complexes form in the presence of K(+) and Rb(+), whereas Li(+) leads to disproportionation. A new uranyl-oxo cluster was isolated from this reaction. The reaction of [U(V)O(2)(salen)(py)][Cp*(2)Co] (Cp* = pentamethylcyclopentadienyl) with its U(VI) analogue yields the oxo-functionalized dimer [UO(2)(salen)(py)](2)[Cp*(2)Co] (8). The reaction of the {[UO(2)(salen)(4)][μ(8)-K](2)[K([18]C-6)](2)} tetramer with protons leads to disproportionation to U(IV) and U(VI) species and H(2)O confirming the crucial role of the proton in the U(V) disproportionation.
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Affiliation(s)
- Victor Mougel
- CEA, INAC, SCIB, Laboratoire de Reconnaissance Ionique et Chimie de Coordination, CEA-Grenoble, 38054 Grenoble, Cedex 09, France
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38
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Synthesis, structural and emission studies of a bis (carbamoyl methyl) sulfone complex of uranyl nitrate. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2010.10.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Mougel V, Biswas B, Pécaut J, Mazzanti M. New insights into the acid mediated disproportionation of pentavalent uranyl. Chem Commun (Camb) 2010; 46:8648-50. [PMID: 20957250 DOI: 10.1039/c0cc03443f] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of benzoic acid with the uranyl(V) complex [(UO(2)Py(5))(KI(2)Py(2))] in pyridine leads to immediate disproportionation with formation of a hexanuclear U(IV) benzoate cluster, a bis-benzoate complex of uranyl(VI) and water.
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Affiliation(s)
- Victor Mougel
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, (UMR-E 3 CEA-UJF FRE 3200 CNRS), INAC, CEA-Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 09, France
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40
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Sather AC, Berryman OB, Rebek J. Selective Recognition and Extraction of the Uranyl Ion. J Am Chem Soc 2010; 132:13572-4. [DOI: 10.1021/ja1035607] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aaron C. Sather
- The Skaggs Institute for Chemical Biology and Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Orion B. Berryman
- The Skaggs Institute for Chemical Biology and Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Julius Rebek
- The Skaggs Institute for Chemical Biology and Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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41
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Yahia A, Castro L, Maron L. A theoretical study of uranium(IV) bis-methyl complexes: towards the predictive formation of a transient uranium(IV) carbene complex. Chemistry 2010; 16:5564-7. [PMID: 20397249 DOI: 10.1002/chem.201000022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ahmed Yahia
- Laboratoire de Physique et Chimie des Nano-objets, INSA, Université Paul Sabatier, 135 avenue de Rangueil, 31077 Toulouse Cedex, France
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42
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Pan QJ, Schreckenbach G. Binuclear Hexa- and Pentavalent Uranium Complexes with a Polypyrrolic Ligand: A Density Functional Study of Water- and Hydronium-Induced Reactions. Inorg Chem 2010; 49:6509-17. [DOI: 10.1021/ic100245a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qing-Jiang Pan
- Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
- Key Laboratory of Functional Inorganic Material Chemistry of Education Ministry and Laboratory of Physical Chemistry, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China 150080
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
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43
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Pan QJ, Shamov G, Schreckenbach G. Binuclear Uranium(VI) Complexes with a “Pacman” Expanded Porphyrin: Computational Evidence for Highly Unusual Bis-Actinyl Structures. Chemistry 2010; 16:2282-90. [DOI: 10.1002/chem.200902014] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Berthet JC, Siffredi G, Thuéry P, Ephritikhine M. Synthesis and crystal structure of pentavalent uranyl complexes. The remarkable stability of UO2X (X = I, SO3CF3) in non-aqueous solutions. Dalton Trans 2009:3478-94. [DOI: 10.1039/b820659g] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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