101
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Thorium-phosphorus triamidoamine complexes containing Th-P single- and multiple-bond interactions. Nat Commun 2016; 7:12884. [PMID: 27682617 PMCID: PMC5056418 DOI: 10.1038/ncomms12884] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/09/2016] [Indexed: 11/09/2022] Open
Abstract
Despite the burgeoning field of uranium-ligand multiple bonds, analogous complexes involving other actinides remain scarce. For thorium, under ambient conditions only a few multiple bonds to carbon, nitrogen, oxygen, sulfur, selenium and tellurium are reported, and no multiple bonds to phosphorus are known, reflecting a general paucity of synthetic methodologies and also problems associated with stabilising these linkages at the large thorium ion. Here we report structurally authenticated examples of a parent thorium(IV)-phosphanide (Th-PH2), a terminal thorium(IV)-phosphinidene (Th=PH), a parent dithorium(IV)-phosphinidiide (Th-P(H)-Th) and a discrete actinide-phosphido complex under ambient conditions (Th=P=Th). Although thorium is traditionally considered to have dominant 6d-orbital contributions to its bonding, contrasting to majority 5f-orbital character for uranium, computational analyses suggests that the bonding of thorium can be more nuanced, in terms of 5f- versus 6d-orbital composition and also significant involvement of the 7s-orbital and how this affects the balance of 5f- versus 6d-orbital bonding character.
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102
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Brown JL, Gaunt AJ, King DM, Liddle ST, Reilly SD, Scott BL, Wooles AJ. Neptunium and plutonium complexes with a sterically encumbered triamidoamine (TREN) scaffold. Chem Commun (Camb) 2016; 52:5428-31. [PMID: 27009799 DOI: 10.1039/c6cc01656a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses and characterisation of isostructural neptunium(iv) and plutonium(iv) complexes [An(IV)(TREN(TIPS))(Cl)] [An = Np, Pu; TREN(TIPS) = {N(CH2CH2NSiPr(i)3)3}(3-)] are reported, along with the demonstration that they are likely reduced to the corresponding neptunium(iii) and plutonium(iii) products [An(III)(TREN(TIPS))]; this chemistry provides new platforms from which to target a plethora of unprecedented molecular functionalities in transuranic chemistry and the neptunium(iv) molecule is the first structurally characterised neptunium(iv)-amide complex.
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Affiliation(s)
- Jessie L Brown
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - David M King
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Stephen T Liddle
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Sean D Reilly
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Brian L Scott
- Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Ashley J Wooles
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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103
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Lu E, Cooper OJ, Tuna F, Wooles AJ, Kaltsoyannis N, Liddle ST. Uranium-Carbene-Imido Metalla-Allenes: Ancillary-Ligand-Controlled cis
-/trans
-Isomerisation and Assessment of trans
Influence in the R2
C=UIV
=NR′ Unit (R=Ph2
PNSiMe3
; R′=CPh3
). Chemistry 2016; 22:11559-63. [DOI: 10.1002/chem.201602690] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Erli Lu
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Oliver J. Cooper
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Floriana Tuna
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Ashley J. Wooles
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Nikolas Kaltsoyannis
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Stephen T. Liddle
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
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104
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Yang P, Zhou E, Fang B, Hou G, Zi G, Walter MD. Preparation of (η5-C5Me5)2Th(bipy) and Its Reactivity toward Small Molecules. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00357] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pikun Yang
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Enwei Zhou
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Bo Fang
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Guohua Hou
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Guofu Zi
- Department
of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Marc D. Walter
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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105
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Solola LA, Zabula AV, Dorfner WL, Manor BC, Carroll PJ, Schelter EJ. An Alkali Metal-Capped Cerium(IV) Imido Complex. J Am Chem Soc 2016; 138:6928-31. [PMID: 27163651 DOI: 10.1021/jacs.6b03293] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structurally authenticated, terminal lanthanide-ligand multiple bonds are rare and expected to be highly reactive. Even capped with an alkali metal cation, poor orbital energy matching and overlap of metal and ligand valence orbitals should result in strong charge polarization within such bonds. We expand on a new strategy for isolating terminal lanthanide-ligand multiple bonds using cerium(IV) complexes. In the current case, our tailored tris(hydroxylaminato) ligand framework, TriNOx(3-), provides steric protection against ligand scrambling and metal complex oligomerization and electronic protection against reduction. This strategy culminates in isolation of the first formal Ce═N bonded moiety in the complex [K(DME)2][Ce═N(3,5-(CF3)2C6H3)(TriNOx)], whose Ce═N bond is the shortest known at 2.119(3) Å.
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Affiliation(s)
- Lukman A Solola
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Alexander V Zabula
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Walter L Dorfner
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Brian C Manor
- 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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106
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Tsoureas N, Kilpatrick AFR, Inman CJ, Cloke FGN. Steric control of redox events in organo-uranium chemistry: synthesis and characterisation of U(v) oxo and nitrido complexes. Chem Sci 2016; 7:4624-4632. [PMID: 30155110 PMCID: PMC6013772 DOI: 10.1039/c6sc00632a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/08/2016] [Indexed: 12/16/2022] Open
Abstract
Controlling the steric environment in U(η8-C8H6(1,4-SiR3)2)(η5-Cp*)] enables selective formation of either mononuclear U(v) or dinuclear U(iv) oxo and nitrido complexes.
The synthesis and molecular structures of a U(v) neutral terminal oxo complex and a U(v) sodium uranium nitride contact ion pair are described. The synthesis of the former is achieved by the use of tBuNCO as a mild oxygen transfer reagent, whilst that of the latter is via the reduction of NaN3. Both mono-uranium complexes are stabilised by the presence of bulky silyl substituents on the ligand framework that facilitate a 2e– oxidation of a single U(iii) centre. In contrast, when steric hindrance around the metal centre is reduced by the use of less bulky silyl groups, the products are di-uranium, U(iv) bridging oxo and (anionic) nitride complexes, resulting from 1e– oxidations of two U(iii) centres. SQUID magnetometry supports the formal oxidation states of the reported complexes. Electrochemical studies show that the U(v) terminal oxo complex can be reduced and the [U(iv)O]– anion was accessed via reduction with K/Hg, and structurally characterised. Both the nitride complexes display complex electrochemical behaviour but each exhibits a quasi-reversible oxidation at ca. –1.6 V vs. Fc+/0.
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Affiliation(s)
- Nikolaos Tsoureas
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
| | - Alexander F R Kilpatrick
- Chemistry Research Laboratory , Department of Chemistry , University of Oxford , 12 Mansfield Road , OX1 3TA , Oxford , UK
| | - Christopher J Inman
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
| | - F Geoffrey N Cloke
- School of Life Sciences , Division of Chemistry , University of Sussex , Falmer , Brighton , BN1 9QJ , UK .
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107
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Lu QQ, Yu HZ, Fu Y. Computational Study of Formic Acid Dehydrogenation Catalyzed by AlIII
-Bis(imino)pyridine. Chemistry 2016; 22:4584-91. [DOI: 10.1002/chem.201504573] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Qian-Qian Lu
- Collaborative Innovation Centre of Chemistry for Energy Materials; CAS Key Laboratory of Urban Pollutant Conversion; Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Hai-Zhu Yu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230601
| | - Yao Fu
- Collaborative Innovation Centre of Chemistry for Energy Materials; CAS Key Laboratory of Urban Pollutant Conversion; Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
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108
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Smiles DE, Wu G, Hrobárik P, Hayton TW. Use of (77)Se and (125)Te NMR Spectroscopy to Probe Covalency of the Actinide-Chalcogen Bonding in [Th(En){N(SiMe3)2}3](-) (E = Se, Te; n = 1, 2) and Their Oxo-Uranium(VI) Congeners. J Am Chem Soc 2016; 138:814-25. [PMID: 26667146 DOI: 10.1021/jacs.5b07767] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of [Th(I)(NR2)3] (R = SiMe3) (1) with 1 equiv of either [K(18-crown-6)]2[Se4] or [K(18-crown-6)]2[Te2] affords the thorium dichalcogenides, [K(18-crown-6)][Th(η(2)-E2)(NR2)3] (E = Se, 2; E = Te, 3), respectively. Removal of one chalcogen atom via reaction with Et3P, or Et3P and Hg, affords the monoselenide and monotelluride complexes of thorium, [K(18-crown-6)][Th(E)(NR2)3] (E = Se, 4; E = Te, 5), respectively. Both 4 and 5 were characterized by X-ray crystallography and were found to feature the shortest known Th-Se and Th-Te bond distances. The electronic structure and nature of the actinide-chalcogen bonds were investigated with (77)Se and (125)Te NMR spectroscopy accompanied by detailed quantum-chemical analysis. We also recorded the (77)Se NMR shift for a U(VI) oxo-selenido complex, [U(O)(Se)(NR2)3](-) (δ((77)Se) = 4905 ppm), which features the highest frequency (77)Se NMR shift yet reported, and expands the known (77)Se chemical shift range for diamagnetic substances from ∼3300 ppm to almost 6000 ppm. Both (77)Se and (125)Te NMR chemical shifts of given chalcogenide ligands were identified as quantitative measures of the An-E bond covalency within an isoelectronic series and supported significant 5f-orbital participation in actinide-ligand bonding for uranium(VI) complexes in contrast to those involving thorium(IV). Moreover, X-ray diffraction studies together with NMR spectroscopic data and density functional theory (DFT) calculations provide convincing evidence for the actinide-chalcogen multiple bonding in the title complexes. Larger An-E covalency is observed in the [U(O)(E)(NR2)3](-) series, which decreases as the chalcogen atom becomes heavier.
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Affiliation(s)
- Danil E Smiles
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
| | - Peter Hrobárik
- Institut für Chemie, Technische Universität Berlin , Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
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109
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Fortier S, Veleta J, Pialat A, Le Roy J, Ghiassi KB, Olmstead MM, Metta‐Magaña A, Murugesu M, Villagrán D. [U(bipy)
4
]: A Mistaken Case of U
0
? Chemistry 2016; 22:1931-1936. [DOI: 10.1002/chem.201504982] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Skye Fortier
- Department of Chemistry University of Texas at El Paso El Paso TX 79968 USA
| | - José Veleta
- Department of Chemistry University of Texas at El Paso El Paso TX 79968 USA
| | - Amélie Pialat
- Department of Chemistry University of Ottawa Ottawa ON K1N 6N5 Canada
| | - Jennifer Le Roy
- Department of Chemistry University of Ottawa Ottawa ON K1N 6N5 Canada
| | - Kamran B. Ghiassi
- Department of Chemistry University of California, Davis Davis CA 95616 USA
| | | | | | - Muralee Murugesu
- Department of Chemistry University of Ottawa Ottawa ON K1N 6N5 Canada
| | - Dino Villagrán
- Department of Chemistry University of Texas at El Paso El Paso TX 79968 USA
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110
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Herasymchuk K, Chiang L, Hayes CE, Brown ML, Ovens JS, Patrick BO, Leznoff DB, Storr T. Synthesis and electronic structure determination of uranium(vi) ligand radical complexes. Dalton Trans 2016; 45:12576-86. [DOI: 10.1039/c6dt02089e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pentagonal bipyramidal uranyl (UO22+) complexes of salen ligands were prepared and the electronic structure of the one-electron oxidized species[1a–c]+were investigated in solution.
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Affiliation(s)
| | - Linus Chiang
- Department of Chemistry
- Simon Fraser University
- Burnaby
- Canada
| | | | | | | | - Brian O. Patrick
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | | | - Tim Storr
- Department of Chemistry
- Simon Fraser University
- Burnaby
- Canada
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111
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Behrle AC, Walensky JR. Insertion of tBuNC into thorium–phosphorus and thorium–arsenic bonds: phosphaazaallene and arsaazaallene moieties in f element chemistry. Dalton Trans 2016; 45:10042-9. [PMID: 27122120 DOI: 10.1039/c6dt00776g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The reactivity of thorium–phosphido and thorium–arsenido bonds was probed using tert-butyl isocyanide, tBuNC.
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112
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Synthesis and Reactivity of a Cerium(III) Scorpionate Complex Containing a Redox Non-Innocent 2,2′-Bipyridine Ligand. INORGANICS 2015. [DOI: 10.3390/inorganics3040534] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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113
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La Pierre HS, Rosenzweig M, Kosog B, Hauser C, Heinemann FW, Liddle ST, Meyer K. Charge control of the inverse trans-influence. Chem Commun (Camb) 2015; 51:16671-4. [PMID: 26430823 DOI: 10.1039/c5cc07211e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of uranium(VI) mono(imido) complexes, by the oxidation of corresponding uranium(V) species, are presented. These experimental results, paired with DFT analyses, allow for the comparison of the electronic structure of uranium(VI) mono(oxo) and mono(imido) ligands within a conserved ligand framework and demonstrate that the magnitude of the ground state stabilization derived from the inverse trans-influence (ITI) is governed by the relative charge localization on the multiply bonded atom or group.
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Affiliation(s)
- Henry S La Pierre
- Friedrich-Alexander-University of Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstr. 1, 91058 Erlangen, Germany.
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114
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Maria L, Santos IC, Sousa VR, Marçalo J. Uranium(III) redox chemistry assisted by a hemilabile bis(phenolate) cyclam ligand: uranium-nitrogen multiple bond formation comprising a trans-{RN═U(VI)═NR}(2+) complex. Inorg Chem 2015; 54:9115-26. [PMID: 26355956 DOI: 10.1021/acs.inorgchem.5b01547] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new monoiodide U(III) complex anchored on a hexadentate dianionic 1,4,8,11-tetraazacyclotetradecane-based bis(phenolate) ligand, [U(κ(6)-{((tBu2)ArO)2Me2-cyclam})I] (1), was synthesized from the reaction of [UI3(THF)4] (THF = tetrahydrofuran) and the respective potassium salt K2((tBu2)ArO)2Me2-cyclam and structurally characterized. Reactivity of 1 toward one-, two-, and four-electron oxidants was studied to explore the reductive chemistry of this new U(III) complex. Complex 1 reacts with one-electron oxidizers, such as iodine and TlBPh4, to form the seven-coordinate cationic uranium(IV) complexes [U(κ(6)-{((tBu2)ArO)2Me2-cyclam})I][X] (X = I (2-I), BPh4 (2-BPh4)). The new uranium(III) complex reacts with inorganic azides to yield the pseudohalide uranium(IV) complex [U(κ(6)-{((tBu2)ArO)2Me2-cyclam})(N3)2] (4) and the nitride-bridged diuranium(IV/IV) complex [(κ(4)-{((tBu2)ArO)2Me2-cyclam})(N3)U(μ-N)U(κ(5)-{((tBu2)ArO)2Me2-cyclam})] (5). Two equivalents of [U(κ(6)-{((tBu2)ArO)2Me2-cyclam})I] (1) effect the four-electron reduction of 1 equiv of PhN═NPh to form the bis(imido) complex [U(κ(4)-{((tBu2)ArO)2Me2-cyclam})(NPh)2] (6) and the U(IV) species 2-I. Moreover, the hemilability of the hexadentate ancillary ligand ((tBu2)ArO)2Me2-cyclam(2-) allows to perform the reductive cleavage of azobenzene with an unprecedented formation of a trans-bis(imido) complex. The complexes were characterized by NMR spectroscopy, and all the new uranium complexes were structurally authenticated by single-crystal X-ray diffraction.
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Affiliation(s)
- Leonor Maria
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Isabel C Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Vânia R Sousa
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Joaquim Marçalo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
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115
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Kiernicki JJ, Cladis DP, Fanwick PE, Zeller M, Bart SC. Synthesis, Characterization, and Stoichiometric U–O Bond Scission in Uranyl Species Supported by Pyridine(diimine) Ligand Radicals. J Am Chem Soc 2015; 137:11115-25. [PMID: 26299269 DOI: 10.1021/jacs.5b06217] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- John J. Kiernicki
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Dennis P. Cladis
- 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
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, Youngstown, Ohio 44555, United States
| | - Suzanne C. Bart
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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116
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Bell NL, Maron L, Arnold PL. Thorium Mono- and Bis(imido) Complexes Made by Reprotonation of cyclo-Metalated Amides. J Am Chem Soc 2015; 137:10492-5. [DOI: 10.1021/jacs.5b06630] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Nicola L. Bell
- EaStCHEM
School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, U.K
| | - Laurent Maron
- CNRS, INSA, UPS,
CNRS, UMR 5215, LPCNO, and Université de Toulouse, 135 Avenue de Rangueil, F-31077 Toulouse, France
| | - Polly L. Arnold
- EaStCHEM
School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, U.K
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117
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Anderson NH, Yin H, Kiernicki JJ, Fanwick PE, Schelter EJ, Bart SC. Investigation of Uranium Tris(imido) Complexes: Synthesis, Characterization, and Reduction Chemistry of [U(NDIPP)
3
(thf)
3
]. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nickolas H. Anderson
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, IN 47907 (USA)
| | - Haolin Yin
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 (USA)
| | - John J. Kiernicki
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, IN 47907 (USA)
| | - Phillip E. Fanwick
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, IN 47907 (USA)
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 (USA)
| | - Suzanne C. Bart
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, IN 47907 (USA)
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118
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Brown JL, Batista ER, Boncella JM, Gaunt AJ, Reilly SD, Scott BL, Tomson NC. A Linear trans-Bis(imido) Neptunium(V) Actinyl Analog: NpV(NDipp)2(tBu2bipy)2Cl (Dipp = 2,6-iPr2C6H3). J Am Chem Soc 2015. [DOI: 10.1021/jacs.5b06667] [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)
- Jessie L. Brown
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Enrique R. Batista
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - James M. Boncella
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Andrew J. Gaunt
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sean D. Reilly
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Neil C. Tomson
- Chemistry, ‡Theoretical, and §Materials Physics and Applications
Divisions, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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119
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Flisak Z, Sun WH. Progression of Diiminopyridines: From Single Application to Catalytic Versatility. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00820] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zygmunt Flisak
- Key
Laboratory of Engineering Plastics and Beijing
National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Faculty
of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland
| | - Wen-Hua Sun
- Key
Laboratory of Engineering Plastics and Beijing
National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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120
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Anderson NH, Yin H, Kiernicki JJ, Fanwick PE, Schelter EJ, Bart SC. Investigation of Uranium Tris(imido) Complexes: Synthesis, Characterization, and Reduction Chemistry of [U(NDIPP)3(thf)3]. Angew Chem Int Ed Engl 2015; 54:9386-9. [DOI: 10.1002/anie.201503771] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 05/15/2015] [Indexed: 11/07/2022]
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121
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Pattenaude SA, Kuehner CS, Dorfner WL, Schelter EJ, Fanwick PE, Bart SC. Spectroscopic and Structural Elucidation of Uranium Dioxophenoxazine Complexes. Inorg Chem 2015; 54:6520-7. [PMID: 26103211 DOI: 10.1021/acs.inorgchem.5b00855] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Uranium derivatives of a redox-active, dioxophenoxazine ligand, (DOPO(q))2UO2, (DOPO(sq))UI2(THF)2, (DOPO(cat))UI(THF)2, and Cp*U(DOPO(cat))(THF)2 (DOPO = 2,4,6,8-tetra-tert-butyl-1-oxo-1H-phenoxazin-9-olate), have been synthesized from U(VI) and U(III) starting materials. Full characterization of these species show uranium complexes bearing ligands in three different oxidation states. The electronic structures of these complexes have been explored using (1)H NMR and electronic absorption spectroscopies, and where possible, X-ray crystallography and SQUID magnetometry.
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Affiliation(s)
- Scott A Pattenaude
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christopher S Kuehner
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Walter L Dorfner
- ‡P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eric J Schelter
- ‡P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Phillip E Fanwick
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C Bart
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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122
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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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123
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124
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Gardner BM, Balázs G, Scheer M, Tuna F, McInnes EJL, McMaster J, Lewis W, Blake AJ, Liddle ST. Triamidoamine uranium(IV)-arsenic complexes containing one-, two- and threefold U-As bonding interactions. Nat Chem 2015; 7:582-90. [PMID: 26100807 DOI: 10.1038/nchem.2279] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/11/2015] [Indexed: 11/09/2022]
Abstract
To further our fundamental understanding of the nature and extent of covalency in uranium-ligand bonding, and the benefits that this may have for the design of new ligands for nuclear waste separation, there is burgeoning interest in the nature of uranium complexes with soft- and multiple-bond-donor ligands. Despite this, there have so far been no examples of structurally authenticated molecular uranium-arsenic bonds under ambient conditions. Here, we report molecular uranium(IV)-arsenic complexes featuring formal single, double and triple U-As bonding interactions. Compound formulations are supported by a range of characterization techniques, and theoretical calculations suggest the presence of polarized covalent one-, two- and threefold bonding interactions between uranium and arsenic in parent arsenide [U-AsH2], terminal arsinidene [U=AsH] and arsenido [U≡AsK2] complexes, respectively. These studies inform our understanding of the bonding of actinides with soft donor ligands and may be of use in future ligand design in this area.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Gábor Balázs
- Institut of Inorganic Chemistry, University of Regensburg, Universitaets Strasse 31, Regensburg 93053, Germany
| | - Manfred Scheer
- Institut of Inorganic Chemistry, University of Regensburg, Universitaets Strasse 31, Regensburg 93053, Germany
| | - Floriana Tuna
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Eric J L McInnes
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Alexander J Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Stephen T Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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125
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Smiles DE, Wu G, Kaltsoyannis N, Hayton TW. Thorium-ligand multiple bonds via reductive deprotection of a trityl group. Chem Sci 2015; 6:3891-3899. [PMID: 29218160 PMCID: PMC5707506 DOI: 10.1039/c5sc01248a] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 04/30/2015] [Indexed: 11/21/2022] Open
Abstract
Reaction of [Th(I)(NR2)3] (R = SiMe3) (2) with KECPh3 (E = O, S) affords the thorium chalcogenates, [Th(ECPh3)(NR2)3] (3, E = O; 4, E = S), in moderate yields. Reductive deprotection of the trityl group from 3 and 4 by reaction with KC8, in the presence of 18-crown-6, affords the thorium oxo complex, [K(18-crown-6)][Th(O)(NR2)3] (6), and the thorium sulphide complex, [K(18-crown-6)][Th(S)(NR2)3] (7), respectively. The natural bond orbital and quantum theory of atoms-in-molecules approaches are employed to explore the metal-ligand bonding in 6 and 7 and their uranium analogues, and in particular the relative roles of the actinide 5f and 6d orbitals.
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Affiliation(s)
- Danil E Smiles
- Department of Chemistry and Biochemistry , University of California Santa Barbara , Santa Barbara , CA 93106 , USA .
| | - Guang Wu
- Department of Chemistry and Biochemistry , University of California Santa Barbara , Santa Barbara , CA 93106 , USA .
| | - Nikolas Kaltsoyannis
- Christopher Ingold Laboratories , Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , UK .
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry , University of California Santa Barbara , Santa Barbara , CA 93106 , USA .
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126
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Anderson NH, Odoh SO, Williams UJ, Lewis AJ, Wagner GL, Lezama Pacheco J, Kozimor SA, Gagliardi L, Schelter EJ, Bart SC. Investigation of the electronic ground states for a reduced pyridine(diimine) uranium series: evidence for a ligand tetraanion stabilized by a uranium dimer. J Am Chem Soc 2015; 137:4690-700. [PMID: 25830409 DOI: 10.1021/ja511867a] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The electronic structures of a series of highly reduced uranium complexes bearing the redox-active pyridine(diimine) ligand, (Mes)PDI(Me) ((Mes)PDI(Me) = 2,6-(2,4,6-Me3-C6H2-N═CMe)2C5H3N) have been investigated. The complexes, ((Mes)PDI(Me))UI3(THF) (1), ((Mes)PDI(Me))UI2(THF)2 (2), [((Mes)PDI(Me))UI]2 (3), and [((Mes)PDI(Me))U(THF)]2 (4), were examined using electronic and X-ray absorption spectroscopies, magnetometry, and computational analyses. Taken together, these studies suggest that all members of the series contain uranium(IV) centers with 5f (2) configurations and reduced ligand frameworks, specifically [(Mes)PDI(Me)](•/-), [(Mes)PDI(Me)](2-), [(Mes)PDI(Me)](3-) and [(Mes)PDI(Me)](4-), respectively. In the cases of 2, 3, and 4 no unpaired spin density was found on the ligands, indicating a singlet diradical ligand in monomeric 2 and ligand electron spin-pairing through dimerization in 3 and 4. Interaction energies, representing enthalpies of dimerization, of -116.0 and -144.4 kcal mol(-1) were calculated using DFT for the monomers of 3 and 4, respectively, showing there is a large stabilization gained by dimerization through uranium-arene bonds. Highlighted in these studies is compound 4, bearing a previously unobserved pyridine(diimine) tetraanion, that was uniquely stabilized by backbonding between uranium cations and the η(5)-pyridyl ring.
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Affiliation(s)
- Nickolas H Anderson
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Samuel O Odoh
- ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Ursula J Williams
- §P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Andrew J Lewis
- §P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Gregory L Wagner
- ∥Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Juan Lezama Pacheco
- ⊥School of Earth Sciences, Environmental Earth System Science Department, Stanford University, Stanford, California 94305-4216, United States
| | - Stosh A Kozimor
- ∥Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Laura Gagliardi
- ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Eric J Schelter
- §P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Suzanne C Bart
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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127
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Higgins Frey JA, Cloke FGN, Roe SM. Synthesis and Reactivity of a Mixed-Sandwich Uranium(IV) Primary Amido Complex. Organometallics 2015. [DOI: 10.1021/om501190x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jessica A. Higgins Frey
- Department of Chemistry,
School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - F. Geoffrey N. Cloke
- Department of Chemistry,
School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - S. Mark Roe
- Department of Chemistry,
School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
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128
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Gardner BM, Lewis W, Blake AJ, Liddle ST. Thorium Triamidoamine Complexes: Synthesis of an Unusual Dinuclear Tuck-in–Tuck-over Thorium Metallacycle Featuring the Longest Known Thorium−σ-Alkyl Bond. Organometallics 2015. [DOI: 10.1021/om501177s] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Benedict M. Gardner
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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129
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Kim JE, Carroll PJ, Schelter EJ. Bidentate nitroxide ligands stable toward oxidative redox cycling and their complexes with cerium and lanthanum. Chem Commun (Camb) 2015; 51:15047-50. [DOI: 10.1039/c5cc06052d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A redox non-innocent bidentate nitroxide ligand stabilizes a tetravalent cerium cation and subsequently an electron–hole upon the oxidation on the electrochemical time scale.
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Affiliation(s)
- Jee Eon Kim
- P. Roy and Diana T. Vagelos Laboratories
- Department of Chemistry
- University of Pennsylvania
- Philadelphia
- USA
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories
- Department of Chemistry
- University of Pennsylvania
- Philadelphia
- USA
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories
- Department of Chemistry
- University of Pennsylvania
- Philadelphia
- USA
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130
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Lu E, Liddle ST. Uranium-mediated oxidative addition and reductive elimination. Dalton Trans 2015; 44:12924-41. [DOI: 10.1039/c5dt00608b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This Perspective article summarises the emerging research topic of uranium-mediated oxidative addition and reductive elimination.
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Affiliation(s)
- Erli Lu
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham
- UK
| | - Stephen T. Liddle
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham
- UK
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131
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CH Bond Activation of Hydrocarbons Mediated by Rare-Earth Metals and Actinides. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2015. [DOI: 10.1016/bs.adomc.2015.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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132
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Schmidt AC, Heinemann FW, Maron L, Meyer K. A Series of Uranium (IV, V, VI) Tritylimido Complexes, Their Molecular and Electronic Structures and Reactivity with CO2. Inorg Chem 2014; 53:13142-53. [DOI: 10.1021/ic5023517] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Anna-Corina Schmidt
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Laurent Maron
- LPCNO, Université de Toulouse, INSA Toulouse, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Karsten Meyer
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
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