1
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Hsueh FC, Barluzzi L, Rajeshkumar T, Scopelliti R, Zivkovic I, Maron L, Mazzanti M. Synthesis, structure and redox properties of single-atom bridged diuranium complexes supported by aryloxides. Dalton Trans 2024; 53:13416-13426. [PMID: 39051943 PMCID: PMC11320667 DOI: 10.1039/d4dt01819b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
Single-atom (group 15 and group 16 anions) bridged dimetallic complexes of low oxidation state uranium provide a convenient route to implement multielectron transfer and promote magnetic communication in uranium chemistry, but remain extremely rare. Here we report the synthesis, redox and magnetic properties of N3-, O2-, and S2- bridged diuranium complexes supported by bulky aryloxide ligands. The U(IV)/U(IV) nitride [Cs(THF)8][(U(OAr)3)2(μ-N)], 1 could be prepared and characterized but could not be reduced. Reduction of the neutral U(IV)/U(IV) complexes [(U(OAr)3)2(μ-X)] A (X = O) and B (X = S) led to the isolation and characterization of the U(IV)/U(III) and U(III)/U(III) analogues. Complexes [(K(THF)4)2(U(OAr)2)2(μ-S)2], 5 and [K(2.2.2-cryptand)]2[(U(OAr)3)2(μ-S)], 6 are the first examples of U(III) sulphide bridged complexes. Computational studies and redox properties allow the reactivity of the dimetallic complexes to be related to their electronic structure.
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Affiliation(s)
- Fang-Che Hsueh
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
| | - Luciano Barluzzi
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
| | - Thayalan Rajeshkumar
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées, 31077 Toulouse, Cedex 4, France
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Ivica Zivkovic
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Laurent Maron
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées, 31077 Toulouse, Cedex 4, France
| | - Marinella Mazzanti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
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2
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Su J, Gong Y, Batista ER, Lucena AF, Maria L, Marçalo J, Van Stipdonk MJ, Berden G, Martens J, Oomens J, Gibson JK, Yang P. Unusual Actinyl Complexes with a Redox-Active N,S-Donor Ligand. Inorg Chem 2023. [PMID: 37390399 DOI: 10.1021/acs.inorgchem.3c00990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Understanding the fundamental chemistry of soft N,S-donor ligands with actinides across the series is critical for separation science toward sustainable nuclear energy. This task is particularly challenging when the ligands are redox active. We herein report a series of actinyl complexes with a N,S-donor redox-active ligand that stabilizes different oxidation states across the actinide series. These complexes are isolated and characterized in the gas phase, along with high-level electronic structure studies. The redox-active N,S-donor ligand in the products, C5H4NS, acts as a monoanion in [UVIO2(C5H4NS-)]+ but as a neutral radical with unpaired electrons localized on the sulfur atom in [NpVO2(C5H4NS•)]+ and [PuVO2(C5H4NS•)]+, resulting in different oxidation states for uranium and transuranic elements. This is rationalized by considering the relative energy levels of actinyl(VI) 5f orbitals and S 3p lone pair orbitals of the C5H4NS- ligand and the cooperativity between An-N and An-S bonds that provides additional stability for the transuranic elements.
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Affiliation(s)
- Jing Su
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu Gong
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ana F Lucena
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Leonor Maria
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Joaquim Marçalo
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Michael J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Giel Berden
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - Jonathan Martens
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Jos Oomens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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3
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Cowie BE, Douair I, Maron L, Love JB, Arnold PL. Selective oxo ligand functionalisation and substitution reactivity in an oxo/catecholate-bridged U IV/U IV Pacman complex. Chem Sci 2020; 11:7144-7157. [PMID: 33033607 PMCID: PMC7499863 DOI: 10.1039/d0sc02297g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 06/11/2020] [Indexed: 02/05/2023] Open
Abstract
The oxo- and catecholate-bridged UIV/UIV Pacman complex [{(py)UIVOUIV(μ-O2C6H4)(py)}(LA)] A (LA = a macrocyclic "Pacman" ligand; anthracenylene hinge between N4-donor pockets, ethyl substituents on meso-carbon atom of each N4-donor pocket) featuring a bent UIV-O-UIV oxo bridge readily reacts with small molecule substrates to undergo either oxo-atom functionalisation or substitution. Complex A reacts with H2O or MeOH to afford [{(py)UIV(μ-OH)2UIV(μ-O2C6H4)(py)}(LA)] (1) and [{(py)UIV(μ-OH)(μ-OMe)UIV(μ-O2C6H4)(py)}(LA)] (2), respectively, in which the bridging oxo ligand in A is substituted for two bridging hydroxo ligands or one bridging hydroxo and one bridging methoxy ligand, respectively. Alternatively, A reacts with either 0.5 equiv. of S8 or 4 equiv. of Se to provide [{(py)UIV(μ-η2:η2-E2)UIV(μ-O2C6H4)(py)}(LA)] (E = S (3), Se (4)) respectively, in which the [E2]2- ion bridges the two UIV centres. To the best of our knowledge, complex A is the first example of either a d- or f-block bimetallic μ-oxo complex that activates elemental chalcogens. Complex A also reacts with XeF2 or 2 equiv. of Me3SiCl to provide [{(py)UIV(μ-X)2UIV(μ-O2C6H4)(py)}(LA)] (X = F (5), Cl (6)), in which the oxo ligand has been substituted for two bridging halido ligands. Reacting A with either XeF2 or Me3SiCl in the presence of O(Bcat)2 at room temperature forms [{(py)UIV(μ-X)(μ-OBcat)UIV(μ-O2C6H4)(py)}(LA)] (X = F (5A), Cl (6A)), which upon heating to 80 °C is converted to 5 and 6, respectively. In order to probe the importance of the bent UIV-O-UIV motif in A on the observed reactivity, the bis(boroxido)-UIV/UIV complex, [{(py)(pinBO)UIVOUIV(OBpin)(py)}(LA)] (B), featuring a linear UIV-O-UIV bond angle was treated with H2O and Me3SiCl. Complex B reacts with two equiv. of either H2O or Me3SiCl to provide [{(py)HOUIVOUIVOH(py)}(LA)] (7) and [{(py)ClUIVOUIVCl(py)}(LA)] (8), respectively, in which reactions occur preferentially at the boroxido ligands, with the μ-oxo ligand unchanged. The formal UIV oxidation state is retained in all of the products 1-8, and selective reactions at the bridging oxo ligand in A is facilitated by: (1) its highly nucleophilic character which is a result of a non-linear UIV-O-UIV bond angle causing an increase in U-O bond covalency and localisation of the lone pairs of electrons on the μ-oxo group, and (2) the presence of the bridging catecholate ligand, which destabilises a linear oxo-bridging geometry and stabilises the resulting products.
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Affiliation(s)
- Bradley E Cowie
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, The King's Buildings , Edinburgh , EH9 3FJ , UK
| | - Iskander Douair
- Université de Toulouse , INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 Avenue de Rangueil , F-31077 Toulouse , France
| | - Laurent Maron
- Université de Toulouse , INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 Avenue de Rangueil , F-31077 Toulouse , France
| | - Jason B Love
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, The King's Buildings , Edinburgh , EH9 3FJ , UK
| | - Polly L Arnold
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, The King's Buildings , Edinburgh , EH9 3FJ , UK
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4
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Goodwin CP, Réant BLL, Vettese GF, Kragskow JGC, Giansiracusa MJ, DiMucci IM, Lancaster KM, Mills DP, Sproules S. Heteroleptic Samarium(III) Chalcogenide Complexes: Opportunities for Giant Exchange Coupling in Bridging σ- and π-Radical Lanthanide Dichalcogenides. Inorg Chem 2020; 59:7571-7583. [PMID: 32421315 PMCID: PMC7268190 DOI: 10.1021/acs.inorgchem.0c00470] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Indexed: 01/19/2023]
Abstract
The introduction of (N2)3-• radicals into multinuclear lanthanide molecular magnets raised hysteresis temperatures by stimulating strong exchange coupling between spin centers. Radical ligands with larger donor atoms could promote more efficient magnetic coupling between lanthanides to provide superior magnetic properties. Here, we show that heavy chalcogens (S, Se, Te) are primed to fulfill these criteria. The moderately reducing Sm(II) complex, [Sm(N††)2], where N†† is the bulky bis(triisopropylsilyl)amide ligand, can be oxidized (i) by diphenyldichalcogenides E2Ph2 (E = S, Se, Te) to form the mononuclear series [Sm(N††)2(EPh)] (E = S, 1-S; Se, 1-Se, Te, 1-Te); (ii) S8 or Se8 to give dinuclear [{Sm(N††)2}2(μ-η2:η2-E2)] (E = S, 2-S2; Se, 2-Se2); or (iii) with Te═PEt3 to yield [{Sm(N††)2}(μ-Te)] (3). These complexes have been characterized by single crystal X-ray diffraction, multinuclear NMR, FTIR, and electronic spectroscopy; the steric bulk of N†† dictates the formation of mononuclear complexes with chalcogenate ligands and dinuclear species with the chalcogenides. The Lα1 fluorescence-detected X-ray absorption spectra at the Sm L3-edge yielded resolved pre-edge and white-line peaks for 1-S and 2-E2, which served to calibrate our computational protocol in the successful reproduction of the spectral features. This method was employed to elucidate the ground state electronic structures for proposed oxidized and reduced variants of 2-E2. Reactivity is ligand-based, forming species with bridging superchalcogenide (E2)-• and subchalcogenide (E2)3-• radical ligands. The extraordinarily large exchange couplings provided by these dichalcogenide radicals reveal their suitability as potential successors to the benchmark (N2)3-• complexes in molecular magnets.
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Affiliation(s)
- Conrad
A. P. Goodwin
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Benjamin L. L. Réant
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Gianni F. Vettese
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Jon G. C. Kragskow
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Marcus J. Giansiracusa
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Ida M. DiMucci
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Kyle M. Lancaster
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - David P. Mills
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Stephen Sproules
- WestCHEM,
School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
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5
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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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6
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Barluzzi L, Falcone M, Mazzanti M. Small molecule activation by multimetallic uranium complexes supported by siloxide ligands. Chem Commun (Camb) 2019; 55:13031-13047. [PMID: 31608910 DOI: 10.1039/c9cc05605j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The synthesis and reactivity of uranium compounds supported by the tris-tert-butoxysiloxide ligand is surveyed. The multiple binding modes of the tert-butoxysiloxide ligand have proven very well suited to stabilize highly reactive homo- and heteropolymetallic complexes of uranium that have shown an unusual high reactivity towards small molecules such as CO2, CS2, chalcogens and azides. Moreover, these ligands have allowed the isolation of dinuclear nitride and oxide bridged complexes of uranium in various oxidation states. The ability of the tris-tert-butoxysiloxide ligands to trap alkali ions in these nitride or oxide complexes leads to unprecedented ligand based and metal based reduction and functionalization of N2, CO, CO2 and H2.
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Affiliation(s)
- Luciano Barluzzi
- I Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Marta Falcone
- I Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Marinella Mazzanti
- I Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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7
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Arnold PL, Puig-Urrea L, Wells JAL, Yuan D, Cruickshank FL, Young RD. Applications of boroxide ligands in supporting small molecule activation by U(iii) and U(iv) complexes. Dalton Trans 2019; 48:4894-4905. [PMID: 30924481 DOI: 10.1039/c8dt05051a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The boroxide ligand [OBAr2]- (Ar = Mes, Trip) is shown to be able to support both UIII and UIV centres for the first time. The synthesis and structures of homoleptic and heteroleptic UIII and UIV complexes are reported. The UX3 complex with larger substituents, [U(OBTrip2)3]2, exhibits greater thermal stability compared to less encumbered [U(OBMes2)3]2 but reacts with a smaller range of the small molecules tested to date. Initial studies on their capacity to participate in small molecule chemistry show that dark purple [U(OBMes2)3]2 binds and/or reductively activates a variety of small molecules such as pyridine-oxide, triphenylphosphineoxide, sulfur, and dicyclohexylcarbodiimide. While [U(OBMes2)3]2 shows no reaction with CO or CO2, [U(OBTrip2)3]2 is oxidised by both, in the former case forming [U(OBTrip2)4], and in the latter case forming a small quantity of the structurally characterised μ-carbonate product [(μ-CO3){U(OBTrip2)3}2].
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Affiliation(s)
- Polly L Arnold
- EaStCHEM School of Chemistry, Joseph Black Building, The King's Buildings, The University of Edinburgh, Edinburgh, EH9 3FJ, UK
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8
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Barluzzi L, Chatelain L, Fadaei-Tirani F, Zivkovic I, Mazzanti M. Facile N-functionalization and strong magnetic communication in a diuranium(v) bis-nitride complex. Chem Sci 2019; 10:3543-3555. [PMID: 30996946 PMCID: PMC6438153 DOI: 10.1039/c8sc05721d] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/08/2019] [Indexed: 11/21/2022] Open
Abstract
Uranium nitride complexes are of high interest because of their ability to effect dinitrogen reduction and functionalization and to promote magnetic communication, but studies of their properties and reactivity remain rare. Here we have prepared in 73% yield the diuranium(v) bis-nitride complex [K2{[U(OSi(O t Bu)3)3]2(μ-N)2}], 4, from the thermal decomposition of the nitride-, azide-bridged diuranium(iv) complex [K2{[U(OSi(O t Bu)3)3]2(μ-N)(μ-N3)}], 3. The bis-nitride 4 reacts in ambient conditions with 1 equiv. of CS2 and 1 equiv. of CO2 resulting in N-C bond formation to afford the diuranium(v) complexes [K2{[U(OSi(O t Bu)3)3]2(μ-N)(μ-S)(μ-NCS)}], 5 and [K2{[U(OSi(O t Bu)3)3]2(μ-N)(μ-O)(μ-NCO)}], 6, respectively. Both nitrides in 4 react with CO resulting in oxidative addition of CO to one nitride and CO cleavage by the second nitride to afford the diuranium(iv) complex [K2{[U(OSi(O t Bu)3)3]2(μ-CN)(μ-O)(μ-NCO)}], 7. Complex 4 also effects the remarkable oxidative cleavage of H2 in mild conditions to afford the bis-imido bridged diuranium(iv) complex [K2{[U(OSi(O t Bu)3)3]2(μ-NH)2}], 8 that can be further protonated to afford ammonia in 73% yield. Complex 8 provides a good model for hydrogen cleavage by metal nitrides in the Haber-Bosch process. The measured magnetic data show an unusually strong antiferromagnetic coupling between uranium(v) ions in the complexes 4 and 6 with Neel temperatures of 77 K and 60 K respectively, demonstrating that nitrides are attractives linkers for promoting magnetic communication in uranium complexes.
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Affiliation(s)
- Luciano Barluzzi
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Lucile Chatelain
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Ivica Zivkovic
- Laboratory for Quantum Magnetism , Institute of Physics , 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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Pagano JK, Arney DSJ, Scott BL, Morris DE, Kiplinger JL, Burns CJ. A sulphur and uranium fiesta! Synthesis, structure, and characterization of neutral terminal uranium(vi) monosulphide, uranium(vi) η2-disulphide, and uranium(iv) phosphine sulphide complexes. Dalton Trans 2019; 48:50-57. [DOI: 10.1039/c8dt02932f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new uranium species, (C5Me5)2U(N-2,6-iPr2-C6H3)(S), (C5Me5)2U(N-2,6-iPr2-C6H3)(η2-S2), and (C5Me5)2U(N-2,6-iPr2-C6H3)(SPMe3) have been prepared.
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10
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Wu W, Rehe D, Hrobárik P, Kornienko AY, Emge TJ, Brennan JG. Molecular Thorium Compounds with Dichalcogenide Ligands: Synthesis, Structure, 77Se NMR Study, and Thermolysis. Inorg Chem 2018; 57:14821-14833. [DOI: 10.1021/acs.inorgchem.8b02555] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen Wu
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - David Rehe
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Peter Hrobárik
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-84215 Bratislava, Slovakia
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Anna Y. Kornienko
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - John G. Brennan
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
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11
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Kelly RP, Falcone M, Lamsfus CA, Scopelliti R, Maron L, Meyer K, Mazzanti M. Metathesis of a U V imido complex: a route to a terminal U V sulfide. Chem Sci 2017; 8:5319-5328. [PMID: 28970911 PMCID: PMC5607896 DOI: 10.1039/c7sc01111c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/25/2017] [Indexed: 11/21/2022] Open
Abstract
The metathesis reaction of a UV imido complex supported by sterically demanding tris(tert-butoxy)siloxide ligands with CS2 afforded a terminal UV thiocarbonate but metathesis with H2S afforded the first example of a terminal UV sulfide.
Herein, we report the synthesis and characterisation of the first terminal uranium(v) sulfide and a related UV trithiocarbonate complex supported by sterically demanding tris(tert-butoxy)siloxide ligands. The reaction of the potassium-bound UV imido complex, [U(NAd){OSi(OtBu)3}4K] (4), with CS2 led to the isolation of perthiodicarbonate [K(18c6)]2[C2S6] (6), with concomitant formation of the UIV complex, [U{OSi(OtBu)3}4], and S
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CNAd. In contrast, the reaction of the UV imido complex, [K(2.2.2-cryptand)][U(NAd){OSi(OtBu)3}4] (5), with one or two equivalents of CS2 afforded the trithiocarbonate complex, [K(2.2.2-cryptand)][U(CS3){OSi(OtBu)3}4] (7), which was isolated in 57% yield, with concomitant elimination of the admantyl thiocyanate product, SCNAd. Complex 7 is likely formed by fast nucleophilic addition of a UV terminal sulfide intermediate, resulting from the slow metathesis reaction of the imido complex with CS2, to a second CS2 molecule. The addition of a solution of H2S in thf (1.3 eq.) to 4 afforded the first isolable UV terminal sulfide complex, [K(2.2.2-cryptand)][US{OSi(OtBu)3}4] (8), in 41% yield. Based on DFT calculations, triple-bond character with a strong covalent interaction is suggested for the U–S bond in complex 7.
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Affiliation(s)
- Rory P Kelly
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Marta Falcone
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Carlos Alvarez Lamsfus
- Université de Toulouse et CNRS INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 avenue de Rangueil , 31077 Toulouse , France
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Laurent Maron
- Université de Toulouse et CNRS INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 avenue de Rangueil , 31077 Toulouse , France
| | - Karsten Meyer
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
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Gardner BM, King DM, Tuna F, Wooles AJ, Chilton NF, Liddle ST. Assessing crystal field and magnetic interactions in diuranium-μ-chalcogenide triamidoamine complexes with U IV-E-U IV cores (E = S, Se, Te): implications for determining the presence or absence of actinide-actinide magnetic exchange. Chem Sci 2017; 8:6207-6217. [PMID: 28989654 PMCID: PMC5628351 DOI: 10.1039/c7sc01998j] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/04/2017] [Indexed: 12/17/2022] Open
Abstract
We report the synthesis and characterisation of a family of diuranium(iv)-μ-chalcogenide complexes including a detailed examination of their electronic structures and magnetic behaviours. Treatment of [U(TrenTIPS)] [1, TrenTIPS = N(CH2CH2NSiPri3)3] with Ph3PS, selenium or tellurium affords the diuranium(iv)-sulfide, selenide, and telluride complexes [{U(TrenTIPS)}2(μ-E)] (E = S, 2; Se, 5; Te, 6). Complex 2 is also formed by treatment of [U(TrenTIPS){OP(NMe2)3}] (3) with Ph3PS, whereas treatment of 3 with elemental sulfur gives the diuranium(iv)-persulfido complex [{U(TrenTIPS)}2(μ-η2:η2-S2)] (4). Complexes 2-6 have been variously characterised by single crystal X-ray diffraction, NMR, IR, and optical spectroscopies, room temperature Evans and variable temperature SQUID magnetometry, elemental analyses, and complete active space self consistent field spin orbit calculations. The combined characterisation data present a self-consistent picture of the electronic structure and magnetism of 2, 5, and 6, leading to the conclusion that single-ion crystal field effects, and not diuranium magnetic coupling, are responsible for features in their variable-temperature magnetisation data. The presence of magnetic coupling is often implied and sometimes quantified by such data, and so this study highlights the importance of evaluating other factors, such as crystal field effects, that can produce similar magnetic observables, and to thus avoid misassignments of such phenomena.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK . ;
| | - David M King
- School of Chemistry , The University of Nottingham , University Park , Nottingham , NG7 2RD , 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 . ;
| | - Nicholas F Chilton
- 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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Arnold PL, Stevens CJ, Bell NL, Lord RM, Goldberg JM, Nichol GS, Love JB. Multi-electron reduction of sulfur and carbon disulfide using binuclear uranium(iii) borohydride complexes. Chem Sci 2017; 8:3609-3617. [PMID: 30155206 PMCID: PMC6094157 DOI: 10.1039/c7sc00382j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/01/2017] [Indexed: 11/23/2022] Open
Abstract
The first use of a dinuclear UIII/UIII complex in the activation of small molecules is reported. The octadentate Schiff-base pyrrole, anthracene-hinged 'Pacman' ligand LA combines two strongly reducing UIII centres and three borohydride ligands in [M(THF)4][{U(BH4)}2(μ-BH4)(LA)(THF)2] 1-M, (M = Li, Na, K). The two borohydride ligands bound to uranium outside the macrocyclic cleft are readily substituted by aryloxide ligands, resulting in a single, weakly-bound, encapsulated endo group 1 metal borohydride bridging the two UIII centres in [{U(OAr)}2(μ-MBH4)(LA)(THF)2] 2-M (OAr = OC6H2t Bu3-2,4,6, M = Na, K). X-ray crystallographic analysis shows that, for 2-K, in addition to the endo-BH4 ligand the potassium counter-cation is also incorporated into the cleft through η5-interactions with the pyrrolides instead of extraneous donor solvent. As such, 2-K has a significantly higher solubility in non-polar solvents and a wider U-U separation compared to the 'ate' complex 1. The cooperative reducing capability of the two UIII centres now enforced by the large and relatively flexible macrocycle is compared for the two complexes, recognising that the borohydrides can provide additional reducing capability, and that the aryloxide-capped 2-K is constrained to reactions within the cleft. The reaction between 1-Na and S8 affords an insoluble, presumably polymeric paramagnetic complex with bridging uranium sulfides, while that with CS2 results in oxidation of each UIII to the notably high UV oxidation state, forming the unusual trithiocarbonate (CS3)2- as a ligand in [{U(CS3)}2(μ-κ2:κ2-CS3)(LA)] (4). The reaction between 2-K and S8 results in quantitative substitution of the endo-KBH4 by a bridging persulfido (S2)2- group and oxidation of each UIII to UIV, yielding [{U(OAr)}2(μ-κ2:κ2-S2)(LA)] (5). The reaction of 2-K with CS2 affords a thermally unstable adduct which is tentatively assigned as containing a carbon disulfido (CS2)2- ligand bridging the two U centres (6a), but only the mono-bridged sulfido (S)2- complex [{U(OAr)}2(μ-S)(LA)] (6) is isolated. The persulfido complex (5) can also be synthesised from the mono-bridged sulfido complex (6) by the addition of another equivalent of sulfur.
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Affiliation(s)
- Polly L Arnold
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
| | - Charlotte J Stevens
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
| | - Nicola L Bell
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
| | - Rianne M Lord
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
| | - Jonathan M Goldberg
- Department of Chemistry , University of Washington , Box 351700 , Seattle , WA 98195-1700 , USA
| | - Gary S Nichol
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
| | - Jason B Love
- EaStCHEM School of Chemistry , University of Edinburgh , The King's Buildings , Edinburgh EH9 3JF , UK . ; ; ; Tel: +44 (0)131 6505429
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Mullane KC, Carroll PJ, Schelter EJ. Synthesis and Reduction of Uranium(V) Imido Complexes with Redox‐Active Substituents. Chemistry 2017; 23:5748-5757. [DOI: 10.1002/chem.201605758] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Kimberly C. Mullane
- P. Roy and Diana T. Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
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Smiles DE, Wu G, Hayton TW. Synthesis, Electrochemistry, and Reactivity of the Actinide Trisulfides [K(18-crown-6)][An(η3-S3)(NR2)3] (An = U, Th; R = SiMe3). Inorg Chem 2016; 55:9150-3. [DOI: 10.1021/acs.inorgchem.6b01618] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Danil E. Smiles
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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King DM, Gardner BM, Lewis W, Liddle ST. Uranium halide complexes stabilized by a new sterically demanding tripodal tris( N-adamantylamidodimethylsilyl)methane ligand. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1187267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- David M. King
- School of Chemistry, The University of Nottingham, Nottingham, UK
| | | | - William Lewis
- School of Chemistry, The University of Nottingham, Nottingham, UK
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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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Andrez J, Pécaut J, Scopelliti R, Kefalidis CE, Maron L, Rosenzweig MW, Meyer K, Mazzanti M. Synthesis and reactivity of a terminal uranium(iv) sulfide supported by siloxide ligands. Chem Sci 2016; 7:5846-5856. [PMID: 30034725 PMCID: PMC6024242 DOI: 10.1039/c6sc00675b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 04/08/2016] [Indexed: 11/26/2022] Open
Abstract
The S-transfer reaction from Ph3PS to the tetrasiloxide U(iii) complex [U(OSi(OtBu)3)4K] affords a stable U(iv) triply bonded terminal sulfide that can be protonated to yield a U(iv) doubly bonded terminal hydrosulfide.
The reactions of the tetrasiloxide U(iii) complexes [U(OSi(OtBu)3)4K] and [U(OSi(OtBu)3)4][K18c6] with 0.5 equiv. of triphenylphosphine sulfide led to reductive S-transfer reactions, affording the U(iv) sulfide complexes [SU(OSi(OtBu)3)4K2]2, 1, and [{SU(OSi(OtBu)3)4K2}2(μ-18c6)], 2, with concomitant formation of the U(iv) complex [U(OSi(OtBu)3)4]. Addition of 1 equiv. of 2.2.2-cryptand to complex 1 resulted in the isolation of a terminal sulfide complex, [SU(OSi(OtBu)3)4K][Kcryptand], 3. The crucial role of the K+ Lewis acid in these reductive sulfur transfer reactions was confirmed, since the formation of complex 3 from the reaction of the U(iii) complex [U(OSi(OtBu)3)4][Kcryptand] and 0.5 equiv. of PPh3S was not possible. Reactivity studies of the U(iv) sulfide complexes showed that the sulfide is easily transferred to CO2 and CS2 to afford S-functionalized products. Moreover, we have found that the sulfide provides a convenient precursor for the synthesis of the corresponding U(iv) hydrosulfide, {[(SH)U(OSi(OtBu)3)4][K18c6]}, 5, after protonation with PyHCl. Finally, DFT calculations were performed to investigate the nature of the U–S bond in complexes 1, 3 and 5. Based on various analyses, triple-bond character was suggested for the U–S bond in complexes 1 and 3, while double-bond character was determined for the U–SH bond in complex 5.
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Affiliation(s)
- Julie Andrez
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Jacques Pécaut
- Univ. Grenoble Alpes , INAC-SyMMES , RICC , F-38000 Grenoble , France.,CEA , INAC-SyMMES , F-38000 Grenoble , France
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
| | - Christos E Kefalidis
- Université de Toulouse et CNRS INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 avenue de Rangueil , 31077 Toulouse , France
| | - Laurent Maron
- Université de Toulouse et CNRS INSA , UPS , CNRS , UMR 5215 , LPCNO , 135 avenue de Rangueil , 31077 Toulouse , France
| | - Michael W Rosenzweig
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland .
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20
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Rosenzweig MW, Scheurer A, Lamsfus CA, Heinemann FW, Maron L, Andrez J, Mazzanti M, Meyer K. Uranium(iv) terminal hydrosulfido and sulfido complexes: insights into the nature of the uranium-sulfur bond. Chem Sci 2016; 7:5857-5866. [PMID: 30034726 PMCID: PMC6024247 DOI: 10.1039/c6sc00677a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 05/09/2016] [Indexed: 11/21/2022] Open
Abstract
Herein, we report the synthesis and characterization of a series of terminal uranium(iv) hydrosulfido and sulfido complexes, supported by the hexadentate, tacn-based ligand framework (Ad,MeArO)3tacn3- (= trianion of 1,4,7-tris(3-(1-adamantyl)-5-methyl-2-hydroxybenzyl)-1,4,7-triazacyclononane). The hydrosulfido complex [((Ad,MeArO)3tacn)U-SH] (2) is obtained from the reaction of H2S with the uranium(iii) starting material [((Ad,MeArO)3tacn)U] (1) in THF. Subsequent deprotonation with potassium bis(trimethylsilyl)amide yields the mononuclear uranium(iv) sulfido species in good yields. With the aid of dibenzo-18-crown-6 and 2.2.2-cryptand, it was possible to isolate a terminal sulfido species, capped by the potassium counter ion, and a "free" terminal sulfido species with a well separated cation/anion pair. Spectroscopic and computational analyses provided insights into the nature of the uranium-sulfur bond in these complexes.
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Affiliation(s)
- Michael W Rosenzweig
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany .
| | - Andreas Scheurer
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany .
| | - Carlos A Lamsfus
- LPCNO , Université de Toulouse , INSA Toulouse , 135 Avenue de Rangueil , 31077 Toulouse , France
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany .
| | - Laurent Maron
- LPCNO , Université de Toulouse , INSA Toulouse , 135 Avenue de Rangueil , 31077 Toulouse , France
| | - Julie Andrez
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Karsten Meyer
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University Erlangen-Nürnberg , Egerlandstraße 1 , 91058 Erlangen , Germany .
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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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Vent-Schmidt T, Andrews L, Thanthiriwatte KS, Dixon DA, Riedel S. Reaction of Laser-Ablated Uranium and Thorium Atoms with H2Se: A Rare Example of Selenium Multiple Bonding. Inorg Chem 2015; 54:9761-9. [PMID: 26418218 DOI: 10.1021/acs.inorgchem.5b01383] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The compounds H2ThSe and H2USe were synthesized by the reaction of laser-ablated actinide metal atoms with H2Se under cryogenic conditions following the procedures used to synthesize H2AnX (An = Th, U; X = O, S). The molecules were characterized by infrared spectra in an argon matrix with the aid of deuterium substitution and electronic structure calculations at the density functional theory level. The main products, H2ThSe and H2USe, are shown to have a highly polarized actinide-selenium triple bond, as found for H2AnS on the basis of electronic structure calculations. There is an even larger back-bonding of the Se with the An than found for the corresponding sulfur compounds. These molecules are of special interest as rare examples of multiple bonding of selenium to a metal, particularly an actinide metal.
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Affiliation(s)
- Thomas Vent-Schmidt
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg , Albertstraße 21, D-79104 Freiburg i. Br., Germany
| | - Lester Andrews
- Department of Chemistry, University of Virginia , P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - K Sahan Thanthiriwatte
- Department of Chemistry, The University of Alabama , Tuscaloosa, Alabama 35487-0336, United States
| | - David A Dixon
- Department of Chemistry, The University of Alabama , Tuscaloosa, Alabama 35487-0336, United States
| | - Sebastian Riedel
- Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin , Fabeckstraße 34-36, D-14195 Berlin, Germany
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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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Abstract
Triamidoamine (Tren) complexes of the p- and d-block elements have been well-studied, and they display a diverse array of chemistry of academic, industrial and biological significance. Such in-depth investigations are not as widespread for Tren complexes of uranium, despite the general drive to better understand the chemical behaviour of uranium by virtue of its fundamental position within the nuclear sector. However, the chemistry of Tren-uranium complexes is characterised by the ability to stabilise otherwise reactive, multiply bonded main group donor atom ligands, construct uranium-metal bonds, promote small molecule activation, and support single molecule magnetism, all of which exploit the steric, electronic, thermodynamic and kinetic features of the Tren ligand system. This Feature Article presents a current account of the chemistry of Tren-uranium complexes.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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Wu QY, Lan JH, Wang CZ, Zhao YL, Chai ZF, Shi WQ. Terminal U≡E (E = N, P, As, Sb, and Bi) bonds in uranium complexes: a theoretical perspective. J Phys Chem A 2015; 119:922-30. [PMID: 25584689 DOI: 10.1021/jp512950j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The compound L-U-N [L = [N(CH2CH2NSiPr(i)3)3](3-), Pr(i) = CH(CH3)2] containing a terminal U-N triple bond has been synthesized and isolated successfully in experiments. To investigate the trend in the bonding nature of its pnictogen analogues, we have studied the L-U-E (E = N, P, As, Sb, and Bi) complexes using the scalar relativistic density functional theory. The terminal U-E multiple bond length increases in the order of U-N ≪ U-P < U-As < U-Sb < U-Bi, which can be supported by the hard and soft acids and bases (HSAB) theory. The U-E bond length, molecular orbital (MO), and natural bond orbital (NBO) reveal that the terminal U-E bonds should be genuine triple bonds containing one σ- and two π-bonding orbitals. Quantum theory of atoms in molecules (QTAIM) topological analysis and the electron localization function (ELF) suggest that the terminal U-E bond possesses covalent character and the covalency of U-E bonds decrease sharply when the terminal atom becomes heavier. This work presents a comparison about the bonding characteristic between the terminal U≡N bond and its heavier pnictogen (P, As, Sb, and Bi) analogues. It is expected that this work would shed light on the evaluation of the amount of 5f orbital participation in multiple bonds and further facilitate our deeper understanding of f-block elements.
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Affiliation(s)
- Qun-Yan Wu
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
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Franke SM, Rosenzweig MW, Heinemann FW, Meyer K. Reactivity of uranium(iii) with H 2E (E = S, Se, Te): synthesis of a series of mononuclear and dinuclear uranium(iv) hydrochalcogenido complexes. Chem Sci 2015; 6:275-282. [PMID: 29560170 PMCID: PMC5811169 DOI: 10.1039/c4sc02602k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 09/29/2014] [Indexed: 12/26/2022] Open
Abstract
We report the syntheses, electronic properties, and molecular structures of a series of mono- and dinuclear uranium(iv) hydrochalcogenido complexes supported by the sterically demanding but very flexible, single N-anchored tris(aryloxide) ligand (AdArO)3N)3-. The mononuclear complexes [((AdArO)3N)U(DME)(EH)] (E = S, Se, Te) can be obtained from the reaction of the uranium(iii) starting material [((AdArO)3N)UIII(DME)] in DME via reduction of H2E and the elimination of 0.5 equivalents of H2. The dinuclear complexes [{((AdArO)3N)U}2(μ-EH)2] can be obtained by dissolving their mononuclear counterparts in non-coordinating solvents such as benzene. In order to facilitate the work with the highly toxic gases, we created concentrated THF solutions that can be handled using simple glovebox techniques and can be stored at -35 °C for several weeks.
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Affiliation(s)
- Sebastian M Franke
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Egerlandstraße 1 , D-91058 Erlangen , Germany . ; ; Tel: +49 9131 8527360
| | - Michael W Rosenzweig
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Egerlandstraße 1 , D-91058 Erlangen , Germany . ; ; Tel: +49 9131 8527360
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Egerlandstraße 1 , D-91058 Erlangen , Germany . ; ; Tel: +49 9131 8527360
| | - Karsten Meyer
- Department of Chemistry and Pharmacy , Inorganic Chemistry , Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Egerlandstraße 1 , D-91058 Erlangen , Germany . ; ; Tel: +49 9131 8527360
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28
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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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Smiles DE, Wu G, Hayton TW. Reactivity of [U(CH2SiMe2NSiMe3)(NR2)2] (R = SiMe3) with elemental chalcogens: towards a better understanding of chalcogen atom transfer in the actinides. NEW J CHEM 2015. [DOI: 10.1039/c5nj00739a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Addition of elemental chalcogens to [U(CH2SiMe2NSiMe3)(NR2)2] results in formation of [U(ECH2SiMe2NSiMe3)(NR2)2] (R = SiMe3; E = S, Se, Te) via chalcogen insertion into the U–C bond.
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Affiliation(s)
- Danil E. Smiles
- Department of Chemistry and Biochemistry
- University of California Santa Barbara
- Santa Barbara
- USA
| | - Guang Wu
- Department of Chemistry and Biochemistry
- University of California Santa Barbara
- Santa Barbara
- USA
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry
- University of California Santa Barbara
- Santa Barbara
- USA
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30
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Smiles DE, Wu G, Hayton TW. Reversible Chalcogen-Atom Transfer to a Terminal Uranium Sulfide. Inorg Chem 2014; 53:12683-5. [DOI: 10.1021/ic502500z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Danil E. Smiles
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara California 93106, United States
| | - Guang Wu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara California 93106, United States
| | - Trevor W. Hayton
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara California 93106, United States
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31
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Smiles DE, Wu G, Hayton TW. Synthesis of Terminal Monochalcogenide and Dichalcogenide Complexes of Uranium Using Polychalcogenides, [En]2– (E = Te, n = 2; E = Se, n = 4), as Chalcogen Atom Transfer Reagents. Inorg Chem 2014; 53:10240-7. [DOI: 10.1021/ic501267f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Danil E. Smiles
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara California 93106, United States
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara California 93106, United States
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32
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Corbey JF, Fang M, Ziller JW, Evans WJ. Cocrystallization of (μ-S2)2– and (μ-S)2– and Formation of an [η2-S3N(SiMe3)2] Ligand from Chalcogen Reduction by (N2)2– in a Bimetallic Yttrium Amide Complex. Inorg Chem 2014; 54:801-7. [DOI: 10.1021/ic501753x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jordan F. Corbey
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Ming Fang
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - William J. Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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33
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Natrajan LS, Swinburne AN, Andrews MB, Randall S, Heath SL. Redox and environmentally relevant aspects of actinide(IV) coordination chemistry. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.12.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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La Pierre HS, Meyer K. Activation of Small Molecules by Molecular Uranium Complexes. PROGRESS IN INORGANIC CHEMISTRY 2014. [DOI: 10.1002/9781118792797.ch05] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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35
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Franke SM, Heinemann FW, Meyer K. Reactivity of uranium(iv) bridged chalcogenido complexes UIV–E–UIV(E = S, Se) with elemental sulfur and selenium: synthesis of polychalcogenido-bridged uranium complexes. Chem Sci 2014. [DOI: 10.1039/c3sc52799a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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36
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Karmel ISR, Elkin T, Fridman N, Eisen MS. Dimethylsilyl bis(amidinate)actinide complexes: synthesis and reactivity towards oxygen containing substrates. Dalton Trans 2014; 43:11376-87. [DOI: 10.1039/c4dt01361a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ligand1reacts with ThCl4and UCl4yielding complexes2and4, respectively. Complex3is obtained from complex2displaying extremely short Th–OH bond distances.
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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
| | - Tatyana Elkin
- 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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37
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Camp C, Antunes MA, García G, Ciofini I, Santos IC, Pécaut J, Almeida M, Marçalo J, Mazzanti M. Two-electron versus one-electron reduction of chalcogens by uranium(iii): synthesis of a terminal U(v) persulfide complex. Chem Sci 2014. [DOI: 10.1039/c3sc52742e] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Smiles DE, Wu G, Hayton TW. Synthesis of Uranium–Ligand Multiple Bonds by Cleavage of a Trityl Protecting Group. J Am Chem Soc 2013; 136:96-9. [DOI: 10.1021/ja411423a] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Danil E. Smiles
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
| | - Guang Wu
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
| | - Trevor W. Hayton
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, California 93106-9510, United States
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39
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Pereira CCL, Michelini MDC, Marçalo J, Gong Y, Gibson JK. Synthesis and properties of uranium sulfide cations. An evaluation of the stability of thiouranyl, {S═U═S}2+. Inorg Chem 2013; 52:14162-7. [PMID: 24256167 DOI: 10.1021/ic4020493] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Atomic uranium cations, U(+) and U(2+), reacted with the facile sulfur-atom donor OCS to produce several monopositive and dipositive uranium sulfide species containing up to four sulfur atoms. Sequential abstraction of two sulfur atoms by U(2+) resulted in US2(2+); density functional theory computations indicate that the ground-state structure for this species is side-on η(2)-S2 triangular US2(2+), with the linear thiouranyl isomer, {S═U(VI)═S}(2+), some 171 kJ mol(-1) higher in energy. The result that the linear thiouranyl structure is a local minimum at a moderate energy suggests that it should be feasible to stabilize this moiety in molecular compounds.
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Affiliation(s)
- Cláudia C L Pereira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , 2695-066 Bobadela LRS, Portugal
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40
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Matson EM, Goshert MD, Kiernicki JJ, Newell BS, Fanwick PE, Shores MP, Walensky JR, Bart SC. Synthesis of Terminal Uranium(IV) Disulfido and Diselenido Compounds by Activation of Elemental Sulfur and Selenium. Chemistry 2013; 19:16176-80. [DOI: 10.1002/chem.201303095] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Indexed: 11/07/2022]
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41
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Brown JL, Fortier S, Wu G, Kaltsoyannis N, Hayton TW. Synthesis and Spectroscopic and Computational Characterization of the Chalcogenido-Substituted Analogues of the Uranyl Ion, [OUE]2+ (E = S, Se). J Am Chem Soc 2013; 135:5352-5. [DOI: 10.1021/ja402068j] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jessie L. Brown
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Skye Fortier
- 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
| | - Nikolas Kaltsoyannis
- Department of Chemistry, Christopher
Ingold Laboratories, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Trevor W. Hayton
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, California 93106, United States
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