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Uranyl Analogue Complexes—Current Progress and Synthetic Challenges. INORGANICS 2022. [DOI: 10.3390/inorganics10080121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Uranyl ions, {UO2}n+ (n = 1, 2), display trans, strongly covalent, and chemically robust U-O multiple bonds, where 6d, 5f, and 6p orbitals play important roles. The synthesis of isoelectronic analogues of uranyl has been of interest for quite some time, mainly with the purpose of unveiling covalence and 5f-orbital participation in bonding. Significant advances have occurred in the last two decades, initially marked by the synthesis of uranium(VI) bis(imido) complexes, the first analogues with a {RNUNR}2+ core, later followed by the synthesis of unique trans-{EUO}2+ (E = S, Se) complexes, and recently highlighted by the synthesis of the first complexes featuring a linear {NUN} moiety. This review covers the synthesis, structure, bonding, and reactivity of uranium complexes containing a linear {EUE}n+ core (n = 0, 1, 2), isoelectronic to uranyl ions, {OUO}n+ (n = 1, 2), incorporating σ- and π-donating ligands that can engage in uranium–ligand multiple bonding, where oxygen may be replaced by heavier chalcogenido, imido, nitride, and carbene ligands, or by a transition metal. It focuses on synthetic methods of well-defined molecular uranium species in the condensed phase but also references gas-phase and low-temperature-matrix experiments, as well as computational studies that may lead to valuable insights.
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Cobb PJ, Wooles AJ, Liddle ST. A Uranium(VI)-Oxo-Imido Dimer Complex Derived from a Sterically Demanding Triamidoamine. Inorg Chem 2020; 59:10034-10041. [PMID: 32602709 DOI: 10.1021/acs.inorgchem.0c01207] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reaction of [UO2(μ-Cl)4{K(18-crown-6)}2] with [{N(CH2CH2NSiPri3)3}Li3] gives [{UO(μ-NCH2CH2N[CH2CH2NSiPri3]2)}2] (1), [{(LiCl)(KCl)(18-crown-6)}2] (2), and [LiOSiPri3] (3) in a 1:2:2 ratio. The formation of the oxo-imido 1 involves the cleavage of a N-Si bond and the activation of one of the usually robust U═O bonds of uranyl(VI), resulting in the formation of uranium(VI)-imido and siloxide linkages. Notably, the uranium oxidation state remains unchanged at +6 in the starting material and product. Structural characterization suggests the dominance of a core RN═U═O group, and the dimeric formulation of 1 is supported by bridging imido linkages in a highly asymmetric U2N2 ring. Density functional theory analyses find a σ > π orbital energy ordering for the U═N and U═O bonds in 1, which is uranyl-like in nature. Complexes 1-3 were characterized variously by single crystal X-ray diffraction, multinuclear NMR, IR, Raman, and optical spectroscopies; cyclic voltammetry; and density functional theory.
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Affiliation(s)
- Philip J Cobb
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Ashley J Wooles
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Stephen T Liddle
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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3
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Abstract
Elaborate synthesis schemes pave the way to f-element and group 3 complexes with multiply bonded imido ligands displaying intriguing reactivity.
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Affiliation(s)
- Dorothea Schädle
- Department of Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
| | - Reiner Anwander
- Department of Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
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4
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Ringgold M, Wu W, Stuber M, Kornienko AY, Emge TJ, Brennan JG. Monomeric thorium chalcogenolates with bipyridine and terpyridine ligands. Dalton Trans 2018; 47:14652-14661. [PMID: 30277236 DOI: 10.1039/c8dt02543f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thorium chalcogenolates Th(ER)4 react with 2,2'-bipyridine (bipy) to form complexes with the stoichiometry (bipy)2Th(ER)4 (E = S, Se; R = Ph, C6F5). All four compounds have been isolated and characterized by spectroscopic methods and low-temperature single crystal X-ray diffraction. Two of the products, (bipy)2Th(SC6F5)4 and (bipy)2Th(SeC6F5)4, crystallize with lattice solvent, (bipy)2Th(SPh)4 crystallizes with no lattice solvent, and the selenolate (bipy)2Th(SePh)4 crystallizes in two phases, with and without lattice solvent. In all four compounds the available volume for coordination bounded by the two bipy ligands is large enough to allow significant conformational flexibility of thiolate or selenolate ligands. 77Se NMR confirms that the structures of the selenolate products are the same in pyridine solution and in the solid state. Attempts to prepare analogous derivatives with 2,2',6',2''-terpyridine (terpy) were successful only in the isolation of (terpy)(py)Th(SPh)4, the first terpy compound of thorium. These materials are thermochromic, with color attributed to ligand-to-ligand charge transfer excitations.
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Affiliation(s)
- Marissa Ringgold
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway NJ 08854-8087, USA.
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Guo YR, Qu N, Pan QJ. A theoretical probe for pentavalent bis-imido uranium complexes containing diverse axial substituents and equatorial donors: UN multiple bond and structural/electronic properties. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lv C, Pan L, Pan Q, Guo Y, Zhang H. Theoretical Design of
cis
‐Bis(imido)uranium Iodides – Electronic Structures and Spectroscopic Properties. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chun‐Mei Lv
- Key Laboratory of Functional Inorganic Material Chemistry of Education Ministry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Ling‐Chao Pan
- Key Laboratory of Functional Inorganic Material Chemistry of Education Ministry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Qing‐Jiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry of Education Ministry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China
| | - 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, P. R. China
| | - Hong‐Xing Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
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7
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Mullane KC, Lewis AJ, Yin H, Carroll PJ, Schelter EJ. Anomalous One-Electron Processes in the Chemistry of Uranium Nitrogen Multiple Bonds. Inorg Chem 2014; 53:9129-39. [DOI: 10.1021/ic501149u] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kimberly C. Mullane
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Andrew J. Lewis
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Haolin Yin
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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Thorocene adducts of the neutral 2,2′-bipyridine and its radical anion. Synthesis and crystal structures of [Th(η8-C8H8)2(κ2-bipy)] and [Th(μ-η8:η5-C8H8)2(κ2-bipy)K(py)2]∞. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Hashem E, McCabe T, Schulzke C, Baker RJ. Synthesis, structure and photophysical properties of [UO2X2(OPPh3)2] (X = Cl, Br, I). Dalton Trans 2014; 43:1125-31. [DOI: 10.1039/c3dt52480a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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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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11
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Kraft SJ, Fanwick PE, Bart SC. Exploring the Insertion Chemistry of Tetrabenzyluranium Using Carbonyls and Organoazides. Organometallics 2013. [DOI: 10.1021/om400197j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Steven J. Kraft
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United
States
| | - Phillip E. Fanwick
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United
States
| | - Suzanne C. Bart
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United
States
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12
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Spencer LP, Yang P, Minasian SG, Jilek RE, Batista ER, Boland KS, Boncella JM, Conradson SD, Clark DL, Hayton TW, Kozimor SA, Martin RL, MacInnes MM, Olson AC, Scott BL, Shuh DK, Wilkerson MP. Tetrahalide complexes of the [U(NR)2]2+ ion: synthesis, theory, and chlorine K-edge X-ray absorption spectroscopy. J Am Chem Soc 2013; 135:2279-90. [PMID: 23320417 DOI: 10.1021/ja310575j] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Synthetic routes to salts containing uranium bis-imido tetrahalide anions [U(NR)(2)X(4)](2-) (X = Cl(-), Br(-)) and non-coordinating NEt(4)(+) and PPh(4)(+) countercations are reported. In general, these compounds can be prepared from U(NR)(2)I(2)(THF)(x) (x = 2 and R = (t)Bu, Ph; x = 3 and R = Me) upon addition of excess halide. In addition to providing stable coordination complexes with Cl(-), the [U(NMe)(2)](2+) cation also reacts with Br(-) to form stable [NEt(4)](2)[U(NMe)(2)Br(4)] complexes. These materials were used as a platform to compare electronic structure and bonding in [U(NR)(2)](2+) with [UO(2)](2+). Specifically, Cl K-edge X-ray absorption spectroscopy (XAS) and both ground-state and time-dependent hybrid density functional theory (DFT and TDDFT) were used to probe U-Cl bonding interactions in [PPh(4)](2)[U(N(t)Bu)(2)Cl(4)] and [PPh(4)](2)[UO(2)Cl(4)]. The DFT and XAS results show the total amount of Cl 3p character mixed with the U 5f orbitals was roughly 7-10% per U-Cl bond for both compounds, which shows that moving from oxo to imido has little effect on orbital mixing between the U 5f and equatorial Cl 3p orbitals. The results are presented in the context of recent Cl K-edge XAS and DFT studies on other hexavalent uranium chloride systems with fewer oxo or imido ligands.
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Affiliation(s)
- Liam P Spencer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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Cladis DP, Kiernicki JJ, Fanwick PE, Bart SC. Multi-electron reduction facilitated by a trianionic pyridine(diimine) ligand. Chem Commun (Camb) 2013; 49:4169-71. [DOI: 10.1039/c2cc37193f] [Citation(s) in RCA: 65] [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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15
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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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