1
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Birnoschi L, Oakley MS, McInnes EJL, Chilton NF. Relativistic Quantum Chemical Investigation of Actinide Covalency Measured by Electron Paramagnetic Resonance Spectroscopy. J Am Chem Soc 2024; 146:14660-14671. [PMID: 38753552 PMCID: PMC11140756 DOI: 10.1021/jacs.4c01930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/18/2024]
Abstract
We investigate actinide covalency effects in two [AnCptt3] (An = Th, U) complexes recently studied with pulsed electron paramagnetic resonance spectroscopy, using the Hyperion package to obtain relativistic hyperfine coupling constants from relativistic multiconfigurational wave functions. 1H and 13C HYSCORE simulations using the computed parameters show excellent agreement with the experimental data, highlighting the accuracy of modern relativistic ab initio methods. The extent of covalency indicated from the calculations on [ThCptt3] is in agreement with the original report based on traditional spectral fitting methods, while the covalency in [UCptt3] is found to be previously overestimated. The latter is due to the paramagnetic spin-orbit effect that arises naturally in a relativistic theory of hyperfine coupling and yet was not accounted for in the original study, thus highlighting the necessity of relativistic approaches for the interpretation of magnetic resonance data pertaining to actinides.
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Affiliation(s)
- Letitia Birnoschi
- Department
of Chemistry, The University of Manchester Oxford Road, Manchester M13 9PL, U.K.
| | - Meagan S. Oakley
- Department
of Chemistry, The University of Manchester Oxford Road, Manchester M13 9PL, U.K.
| | - Eric J. L. McInnes
- Department
of Chemistry, The University of Manchester Oxford Road, Manchester M13 9PL, U.K.
| | - Nicholas F. Chilton
- Department
of Chemistry, The University of Manchester Oxford Road, Manchester M13 9PL, U.K.
- Research
School of Chemistry, The Australian National
University, Sullivans
Creek Road, Canberra, Acton 2601, Australia
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2
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Vinod S, Ebenezer C, Solomon RV. Do mono- or diphenol substitutions in phenanthroline-based ligands serve in effective separation of Am 3+/Eu 3+ ions?- Insights from DFT calculations. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2160352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shruti Vinod
- Department of Chemistry, Madras Christian College (Autonomous), Chennai, India
| | - Cheriyan Ebenezer
- Department of Chemistry, Madras Christian College (Autonomous), Chennai, India
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3
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Ebenezer C, Solomon RV. Complexation of N‐Heterocyclic Substituted 1,10‐Phenanthroline‐2,9‐diamide with Am
3+
/Eu
3+
Ions for Nuclear Waste Water Treatment. ChemistrySelect 2022. [DOI: 10.1002/slct.202203535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cheriyan Ebenezer
- Department of Chemistry Madras Christian College (Autonomous) [Affiliated to the University of Madras Chennai 600 059 Tamil Nadu India
| | - Rajadurai Vijay Solomon
- Department of Chemistry Madras Christian College (Autonomous) [Affiliated to the University of Madras Chennai 600 059 Tamil Nadu India
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4
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Jennifer SJ, Razak IA, Ebenezer C, Solomon RV. Role of Cl• • •Cl halogen bonds in tuning the crystals of Uranyl-Dicholorothiophene carboxylate based hybrid cluster materials through N-donor counter ions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Contrasting behaviour under pressure reveals the reasons for pyramidalization in tris(amido)uranium(III) and tris(arylthiolate) uranium(III) molecules. Nat Commun 2022; 13:3931. [PMID: 35798750 PMCID: PMC9262880 DOI: 10.1038/s41467-022-31550-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 06/15/2022] [Indexed: 12/03/2022] Open
Abstract
A range of reasons has been suggested for why many low-coordinate complexes across the periodic table exhibit a geometry that is bent, rather a higher symmetry that would best separate the ligands. The dominating reason or reasons are still debated. Here we show that two pyramidal UX3 molecules, in which X is a bulky anionic ligand, show opposite behaviour upon pressurisation in the solid state. UN″3 (UN3, N″ = N(SiMe3)2) increases in pyramidalization between ambient pressure and 4.08 GPa, while U(SAr)3 (US3, SAr = S-C6H2-tBu3−2,4,6) undergoes pressure-induced planarization. This capacity for planarization enables the use of X-ray structural and computational analyses to explore the four hypotheses normally put forward for this pyramidalization. The pyramidality of UN3, which increases with pressure, is favoured by increased dipole and reduction in molecular volume, the two factors outweighing the slight increase in metal-ligand agostic interactions that would be formed if it was planar. The ambient pressure pyramidal geometry of US3 is favoured by the induced dipole moment and agostic bond formation but these are weaker drivers than in UN3; the pressure-induced planarization of US3 is promoted by the lower molecular volume of US3 when it is planar compared to when it is pyramidal. The reasons for which many low-coordinate complexes exhibit bent geometry, rather than a higher symmetry, are still under debate. Here, the authors use high-pressure crystallography to examine whether low-coordinate f-block molecules become more planar or pyramidal under pressure; which happens is dictated by the dipole moment of the complex and the volume of the planar form.
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6
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Ebenezer C, Vijay Solomon R. Do nitrate ions preferentially bind to Ln/An ion in Nuclear Waste Treatment? - Answers from DFT calculations. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Does the length of the alkyl chain affect the complexation and selectivity of phenanthroline-derived phosphonate ligands? – Answers from DFT calculations. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Pividori D, Miehlich ME, Kestel B, Heinemann FW, Scheurer A, Patzschke M, Meyer K. Uranium Going the Soft Way: Low-Valent Uranium(III) Coordinated to an Arene-Anchored Tris-Thiophenolate Ligand. Inorg Chem 2021; 60:16455-16465. [PMID: 34677061 DOI: 10.1021/acs.inorgchem.1c02310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of a tripodal, S-based ligand, namely the mesitylene-anchored, tris-thiophenolate-functionalized (mes(Me,AdArS)3)3- (1)3-, and its coordination chemistry with low-valent uranium to form [UIII((SArAd,Me)3mes)] (1-U) are reported. Single-crystal X-ray diffraction analysis reveals a C3-symmetric molecular structure. Full characterization of 1-U was performed using nuclear magnetic resonance, UV-vis-NIR electronic absorption, and electron paramagnetic resonance spectroscopies as well as SQUID magnetometry, thus confirming the U(III) oxidation state. Alternating current magnetic studies show that 1-U exhibits single-molecule magnet behavior at low temperatures in a non-zero external field. Comparison of these results to those of the previously reported mesitylene-anchored complexes, [UIII((OArAd,Me)3mes)] and [UIII((OArtBu,tBu)3mes)], indicates a drastic change in the electronic structure when moving from phenolate-based ligands to thiophenolate-based 1, which is further discussed by means of computational analysis (NBO, DFT, and QTAIM). Despite the U-O bonds being stronger, a much higher covalency was found for the U-S analogue.
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Affiliation(s)
- Daniel Pividori
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Matthias E Miehlich
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Benedikt Kestel
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Frank W Heinemann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Andreas Scheurer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Michael Patzschke
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Karsten Meyer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
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9
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George Thomas M, Ebenezer C, Solomon RV. Tuning the structure of disulfonated phenanthroline based ligands for effective separation of Am(III)/Eu(III) ions : A DFT investigation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Lipin R, Ebenezer C, Solomon RV. Theoretical evaluation of mixed N-, O- donor based TMPhenDA ligand in selective complexation with actinide (III) ions over lanthanide (III) ions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115819] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Ebenezer C, Vijay Solomon R. Tailoring the selectivity of phenanthroline derivatives for the partitioning of trivalent Am/Eu ions – a relativistic DFT study. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00097g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Preferential binding of actinides over lanthanides using tailored phenanthroline derivative ligands through relativistic DFT calculations.
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Affiliation(s)
- Cheriyan Ebenezer
- Department of Chemistry
- Madras Christian College (Autonomous)
- (Affiliated to the University of Madras)
- Chennai – 600 059
- India
| | - Rajadurai Vijay Solomon
- Department of Chemistry
- Madras Christian College (Autonomous)
- (Affiliated to the University of Madras)
- Chennai – 600 059
- India
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12
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Wang Y, Xie Y, Wei P, Schaefer HF, Robinson GH. Redox chemistry of an anionic dithiolene radical. Dalton Trans 2019; 48:3543-3546. [DOI: 10.1039/c8dt04989k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox reactivity of a stable anionic dithiolene radical has been explored, giving the corresponding dithiolate and neutral dithiolene dimers.
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Affiliation(s)
- Yuzhong Wang
- Department of Chemistry
- The University of Georgia
- Athens
- USA
| | - Yaoming Xie
- Department of Chemistry
- The University of Georgia
- Athens
- USA
| | - Pingrong Wei
- Department of Chemistry
- The University of Georgia
- Athens
- USA
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13
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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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14
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Penchoff DA, Peterson CC, Quint MS, Auxier JD, Schweitzer GK, Jenkins DM, Harrison RJ, Hall HL. Structural Characteristics, Population Analysis, and Binding Energies of [An(NO 3)] 2+ (with An = Ac to Lr). ACS OMEGA 2018; 3:14127-14143. [PMID: 31458106 PMCID: PMC6645087 DOI: 10.1021/acsomega.8b01800] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/12/2018] [Indexed: 05/21/2023]
Abstract
Efficient predictive capabilities are essential for the actinide series since regulatory constraints for radioactive work, associated costs needed for specialized facilities, and the short half-lives of many actinides present great challenges in laboratory settings. Improved predictive accuracy is advantageous for numerous applications including the optimization and design of separation agents for nuclear fuel and waste. One limitation of calculations in support of these applications is that the large variations observed from predictions obtained with currently available methods can make comparisons across studies uncertain. Benchmarking currently available computational methodologies is essential to establish reliable practices across the community to guarantee an accurate physical description of the systems studied. To understand the performance of a variety of common theoretical methods, a systematic analysis of differences observed in the prediction of structural characteristics, electron withdrawing effects, and binding energies of [An(NO3)]2+ (with An = Ac to Lr) in gas and aqueous phases is reported. Population analysis obtained with Mulliken and Löwdin reflect a large dependence on the level of theory of choice, whereas those obtained with natural bond orbital show larger consistency across methodologies. Predicted stability across the actinide series calculated with coupled cluster with perturbative doubles and triples at the triple ζ level is equivalent to the one obtained when extrapolated to the complete basis set limit. The ground state of [Fm(NO3)]2+ and [Md(NO3)]2+ is predicted to have an electronic structure corresponding to An III state in gas and An IV in aqueous phase, whereas the ground state of [An(NO3)]2+ (with An = Ac to Es, Lr) presents an electronic structure corresponding to An IV in the gas and aqueous phase. The compounds studied with No in gas and aqueous phase present a preferred No III state, and the Lr compounds did not follow trends predicted for the rest of the actinide series, as previously observed in studies regarding its unusual electronic structure relative to its position in the periodic table.
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Affiliation(s)
- Deborah A. Penchoff
- Institute
for Nuclear Security, University of Tennessee, 1640 Cumberland Avenue, Knoxville, Tennessee 37996, United States
- Joint
Institute for Computational Sciences, Oak
Ridge National Laboratory, Oak
Ridge, Tennessee 37831, United States
| | - Charles C. Peterson
- Research
Information Technology Services, University
of North Texas, 225 South Avenue B, Denton, Texas 76201, United
States
| | - Mark S. Quint
- Department
of Nuclear Engineering, University of Tennessee, 301 Middle Drive, Pasqua Nuclear
Engineering Building, Knoxville, Tennessee 37996, United States
- US
Army Nuclear and Countering Weapons of Mass Destruction Agency (USANCA), United States Army, Ft. Jackson, South Carolina 29715, United States
| | - John D. Auxier
- Radiochemistry
Center of Excellence (RCOE), University
of Tennessee, 1508 Middle
Drive, Ferris Hall, Knoxville, Tennessee 37996, United States
| | - George K. Schweitzer
- Department
of Chemistry, University of Tennessee, 1420 Circle Drive, Knoxville, Tennessee 37996, United States
| | - David M. Jenkins
- Department
of Chemistry, University of Tennessee, 1420 Circle Drive, Knoxville, Tennessee 37996, United States
| | - Robert J. Harrison
- Institute
for Advanced Computational Science, Stony
Brook University, 100 Nicolls Road, Stony Brook, New York 11790, United
States
- Brookhaven
National Laboratory, Computational Science, Building 725, Upton, New York 11973, United States
| | - Howard L. Hall
- Institute
for Nuclear Security, University of Tennessee, 1640 Cumberland Avenue, Knoxville, Tennessee 37996, United States
- Radiochemistry
Center of Excellence (RCOE), University
of Tennessee, 1508 Middle
Drive, Ferris Hall, Knoxville, Tennessee 37996, United States
- Y-12
National Security Complex, Oak
Ridge, Tennessee 37830, United States
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15
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Rungthanaphatsophon P, Barnes CL, Kelley SP, Walensky JR. Four-electron reduction chemistry using a uranium(iii) phosphido complex. Dalton Trans 2018; 47:8189-8192. [DOI: 10.1039/c8dt01406j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first uranium(iii) phosphido complex is reported.
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16
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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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17
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18
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Expanding the Chemistry of Actinide Metallocene Bromides. Synthesis, Properties and Molecular Structures of the Tetravalent and Trivalent Uranium Bromide Complexes: (C5Me4R)2UBr2, (C5Me4R)2U(O-2,6-iPr2C6H3)(Br), and [K(THF)][(C5Me4R)2UBr2] (R = Me, Et). INORGANICS 2016. [DOI: 10.3390/inorganics4010001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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19
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Kefalidis CE, Castro L, Perrin L, Rosal ID, Maron L. New perspectives in organolanthanide chemistry from redox to bond metathesis: insights from theory. Chem Soc Rev 2016; 45:2516-43. [DOI: 10.1039/c5cs00907c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A fifteen year contribution of computational studies carried out in close synergy with experiments is summarized.
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20
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Karmel ISR, Tamm M, Eisen MS. Actinide-Mediated Catalytic Addition of EH Bonds (E=N, P, S) to Carbodiimides, Isocyanates, and Isothiocyanates. Angew Chem Int Ed Engl 2015; 54:12422-5. [DOI: 10.1002/anie.201502041] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 04/23/2015] [Indexed: 12/15/2022]
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21
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Karmel ISR, Tamm M, Eisen MS. Actinide-Mediated Catalytic Addition of EH Bonds (E=N, P, S) to Carbodiimides, Isocyanates, and Isothiocyanates. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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22
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Matson EM, Breshears AT, Kiernicki JJ, Newell BS, Fanwick PE, Shores MP, Walensky JR, Bart SC. Trivalent uranium phenylchalcogenide complexes: exploring the bonding and reactivity with CS2 in the Tp*2UEPh series (E = O, S, Se, Te). Inorg Chem 2014; 53:12977-85. [PMID: 25415677 DOI: 10.1021/ic5020658] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The trivalent uranium phenylchalcogenide series, Tp*2UEPh (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate, E = O (1), S (2), Se (3), Te (4)), has been synthesized to investigate the nature of the U-E bond. All compounds have been characterized by (1)H NMR, infrared and electronic absorption spectroscopies, and in the case of 4, X-ray crystallography. Compound 4 was also studied by SQUID magnetometry. Computational studies establish Mulliken spin densities for the uranium centers ranging from 3.005 to 3.027 (B3LYP), consistent for uranium-chalcogenide bonds that are primarily ionic in nature, with a small covalent contribution. The reactivity of 2-4 toward carbon disulfide was also investigated and showed reversible CS2 insertion into the U(III)-E bond, forming Tp*2U(κ(2)-S2CEPh) (E = S (5), Se (6), Te (7)). Compound 5 was characterized crystallographically.
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Affiliation(s)
- Ellen M Matson
- H.C. Brown Laboratory, Department of Chemistry, Purdue University , West Lafayette 47907, Indiana, United States
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23
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Hervé A, Bouzidi Y, Berthet JC, Belkhiri L, Thuéry P, Boucekkine A, Ephritikhine M. U–CN versus Ce–NC Coordination in Trivalent Complexes Derived from M[N(SiMe3)2]3 (M = Ce, U). Inorg Chem 2014; 53:6995-7013. [DOI: 10.1021/ic500939t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alexandre Hervé
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Yamina Bouzidi
- URCHEMS,
Département de Chimie, Université Constantine 1, 25000 Constantine, Algeria
| | - Jean-Claude Berthet
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Lotfi Belkhiri
- URCHEMS,
Département de Chimie, Université Constantine 1, 25000 Constantine, Algeria
| | - Pierre Thuéry
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
| | - Abdou Boucekkine
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Michel Ephritikhine
- CEA, IRAMIS, NIMBE, UMR 3299 CEA/CNRS SIS2M, CEA/Saclay, Bat 125, 91191 Gif-sur-Yvette, France
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Elkechai A, Kias F, Talbi F, Boucekkine A. Redox properties of biscyclopentadienyl uranium(V) imido-halide complexes: a relativistic DFT study. J Mol Model 2014; 20:2294. [PMID: 24878804 DOI: 10.1007/s00894-014-2294-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 05/05/2014] [Indexed: 11/28/2022]
Abstract
Calculations of ionization energies (IE) and electron affinities (EA) of a series of biscyclopentadienyl imido-halide uranium(V) complexes Cp*2U(=N-2,6-(i)Pr2-C6H3)(X) with X = F, Cl, Br, and I, related to the U(IV)/U(V) and U(V)/U(VI) redox systems, were carried out, for the first time, using density functional theory (DFT) in the framework of the relativistic zeroth order regular approximation (ZORA) coupled with the conductor-like screening model (COSMO) solvation approach. A very good linear correlation (R(2) = 0.993) was obtained, between calculated ionization energies at the ZORA/BP86/TZP level, and the experimental half-wave oxidation potentials E1/2. A similar linear correlation between the computed electron affinities and the electrochemical reduction U(IV)/U(III) potentials (R(2) = 0.996) is obtained. The importance of solvent effects and of spin-orbit coupling is definitively confirmed. The molecular orbital analysis underlines the crucial role played by the 5f orbitals of the central metal whereas the Nalewajski-Mrozek (N-M) bond indices explain well the bond distances variations following the redox processes. The IE variation of the complexes, i.e., IE(F) < IE(Cl) < IE(Br) < IE(I) is also well rationalized considering the frontier MO diagrams of these species. Finally, this work confirms the relevance of the Hirshfeld charges analysis which bring to light an excellent linear correlation (R(2) = 0.999) between the variations of the uranium charges and E1/2 in the reduction process of the U(V) species.
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Affiliation(s)
- Aziz Elkechai
- Laboratoire de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri, 15000, Tizi-Ouzou, Algeria
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25
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Rajesekharan-Nair R, Lutta ST, Kennedy AR, Reglinski J, Spicer MD. Soft scorpionate coordination at alkali metals. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2014; 70:421-7. [PMID: 24816005 DOI: 10.1107/s2053229614005737] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 03/13/2014] [Indexed: 11/10/2022]
Abstract
Reported here are the single-crystal X-ray structure analyses of bis-μ-methanol-κ(4)O:O-bis{[hydrotris(3-phenyl-2-sulfanylidene-2,3-dihydro-1H-1,3-imidazol-1-yl)borato-κ(3)H,S,S'](methanol-κO)sodium(I)}, [Na2(C27H22BN6S3)2(CH4O)4] (NaTm(Ph)), bis-μ-methanol-κ(4)O:O-bis{[hydrotris(3-isopropyl-2-sulfanylidene-2,3-dihydro-1H-1,3-imidazol-1-yl)borato-κ(3)H,S,S'](methanol-κO)sodium(I)}-diethyl ether-methanol (1/0.3333/0.0833), [Na2(C18H28BN6S3)2(CH4O)4]·0.3333C4H10O·0.0833CH3OH (NaTm(iPr)), and a novel anhydrous form of sodium hydrotris(methylthioimidazolyl)borate, poly[[μ-hydrotris(3-methyl-2-sulfanylidene-2,3-dihydro-1H-1,3-imidazol-1-yl)borato]sodium(I)], [Na(C12H16BN6S3)] ([NaTm(Me)]n). NaTm(iPr) and NaTm(Ph) have similar dimeric molecular structures with κ(3)H,S,S'-bonding, but they differ in that NaTm(Ph) is crystallographically centrosymmetric (Z' = 0.5) while NaTm(iPr) contains one crystallographically centrosymmetric dimer and one dimer positioned on a general position (Z' = 1.5). [NaTm(Me)]n is a one-dimensional coordination polymer that extends along the a direction and which contains a hitherto unseen side-on η(2)-C=S-to-Na bond type. An overview of the structural preferences of alkali metal soft scorpionate complexes is presented. This analysis suggests that these thione-based ligands will continue to be a rich source of interesting alkali metal motifs worthy of isolation and characterization.
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Affiliation(s)
- Rajeev Rajesekharan-Nair
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland
| | - Samuel T Lutta
- Department of Chemistry and Biochemistry, Chepkoilel University College, Moi University, PO Box 1125, Eldoret, Kenya
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland
| | - John Reglinski
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland
| | - Mark D Spicer
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland
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Zaiter A, Amine B, Bouzidi Y, Belkhiri L, Boucekkine A, Ephritikhine M. Selectivity of Azine Ligands Toward Lanthanide(III)/Actinide(III) Differentiation: A Relativistic DFT Based Rationalization. Inorg Chem 2014; 53:4687-97. [DOI: 10.1021/ic500361b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Abdellah Zaiter
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Boudersa Amine
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Yamina Bouzidi
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Lotfi Belkhiri
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Abdou Boucekkine
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de
Beaulieu, 35042 Rennes Cedex, France
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27
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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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28
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Barry BM, Stein BW, Larsen CA, Wirtz MN, Geiger WE, Waterman R, Kemp RA. Metal Complexes (M = Zn, Sn, and Pb) of 2-Phosphinobenzenethiolates: Insights into Ligand Folding and Hemilability. Inorg Chem 2013; 52:9875-84. [DOI: 10.1021/ic400990n] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Brian M. Barry
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United
States
| | - Benjamin W. Stein
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United
States
| | - Christopher A. Larsen
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United
States
| | - Melissa N. Wirtz
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United
States
| | - William E. Geiger
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, United
States
| | - Rory Waterman
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, United
States
| | - Richard A. Kemp
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United
States
- Advanced Materials
Laboratory, Sandia National Laboratories, Albuquerque, New Mexico 87106, United States
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29
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Ephritikhine M. Recent Advances in Organoactinide Chemistry As Exemplified by Cyclopentadienyl Compounds. Organometallics 2013. [DOI: 10.1021/om400145p] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Siladke NA, LeDuc J, Ziller JW, Evans WJ. Synthesis and Insertion Chemistry of Mixed Tether Uranium Metallocene Complexes. Chemistry 2012; 18:14820-7. [DOI: 10.1002/chem.201201908] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Nathan A Siladke
- Department of Chemistry, University of California, Irvine, 92627-2025, USA
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31
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Elkechai A, Mani Y, Boucekkine A, Ephritikhine M. Density functional theory investigation of the redox properties of tricyclopentadienyl- and phospholyluranium(IV) chloride complexes. Inorg Chem 2012; 51:6943-52. [PMID: 22668342 DOI: 10.1021/ic300811m] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The redox behavior of tricyclopentadienyl- and phospholyluranium(IV) chloride complexes L(3)UCl with L = C(5)H(5) (Cp), C(5)H(4)Me (MeCp), C(5)H(4)SiMe(3) (TMSCp), C(5)H(4)(t)Bu ((t)BuCp), C(5)Me(5) (Cp*), and C(4)Me(4)P (tmp), has been investigated using relativistic density functional theory calculations, with the solvent being taken into account using the conductor-like screening model. A very good linear correlation (r(2) = 0.99) has been obtained between the computed electron affinities of the L(3)UCl complexes and the experimental half-wave reduction potentials E(1/2) related to the U(IV)/U(III) redox systems. From a computational point of view, our study confirms the crucial importance of spin-orbit coupling and solvent corrections and the use of an extended basis set in order to achieve the best experiment-theory agreement. Considering oxidation of the uranium(IV) complexes, the instability of the uranium(V) derivatives [L(3)UCl](+) is revealed, in agreement with experimental electrochemical findings. The driving roles of both the electron-donating ability of the L ligand and the U 5f orbitals on the redox properties of the complexes are brought to light. Interestingly, we found and explained the excellent correlation between variations of the uranium Hirschfeld charges following U(IV)/U(III) electron capture and E(1/2). In addition, this work allowed one to estimate theoretically the half-wave reduction potential of [Cp*(3)UCl].
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Affiliation(s)
- Aziz Elkechai
- Laboratoire de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, 15000 Tizi-Ouzou, Algeria
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32
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Wang D, van Gunsteren WF, Chai Z. Recent advances in computational actinoid chemistry. Chem Soc Rev 2012; 41:5836-65. [DOI: 10.1039/c2cs15354h] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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33
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Matson EM, Fanwick PE, Bart SC. Formation of Trivalent U–C, U–N, and U–S Bonds and Their Reactivity toward Carbon Dioxide and Acetone. Organometallics 2011. [DOI: 10.1021/om200612h] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ellen M. Matson
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C. Bart
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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34
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Lichtenberg C, Spaniol TP, Okuda J. Reactivity of Tris(allyl)aluminum toward Pyridine: Coordination versus Carbometalation. Organometallics 2011. [DOI: 10.1021/om200492f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Crispin Lichtenberg
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
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35
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Siladke NA, Ziller JW, Evans WJ. Insertion, Isomerization, and Cascade Reactivity of the Tethered Silylalkyl Uranium Metallocene (η5-C5Me4SiMe2CH2-κC)2U. J Am Chem Soc 2011; 133:3507-16. [DOI: 10.1021/ja109491k] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nathan A. Siladke
- 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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36
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Elkechai A, Meskaldji S, Boucekkine A, Belkhiri L, Bouchet D, Amarouche M, Clappe C, Hauchard D, Ephritikhine M. A relativistic DFT study of the electron affinity of the biscyclopentadienyl uranium complexes Cp∗2UX2. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.02.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Elkechai A, Boucekkine A, Belkhiri L, Hauchard D, Clappe C, Ephritikhine M. Electron affinities of biscyclopentadienyl and phospholyl uranium(IV) borohydride complexes: Experimental and DFT studies. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Korobkov I, Vidjayacoumar B, Gorelsky SI, Billone P, Gambarotta S. Attempting to Reduce the Irreducible: Preparation of a Rare Paramagnetic Thorium Species. Organometallics 2010. [DOI: 10.1021/om900996n] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ilia Korobkov
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Balamurugan Vidjayacoumar
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Serge I. Gorelsky
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Paul Billone
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Sandro Gambarotta
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
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39
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Berthet JC, Thuéry P, Foreman MRS, Ephritikhine M. First 5f-element complexes with the tetradentate BTBP ligand. Synthesis and crystal structure of uranyl(VI) compounds with CyMe4BTBP. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2008.1478] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Treatment of [UO2(OTf)2] or [UO2I2(thf)3] with 1 equiv. of CyMe4BTBP in anhydrous acetonitrile led to the formation of [UO2(CyMe4BTBP)(OTf)2] (1) and [UO2(CyMe4BTBP)I2] (2) which crystallized as the cationic forms [UO2(CyMe4BTBP)(py)][OTf]2
(3) and [UO2I(CyMe4BTBP)][I] (4) in pyridine and acetonitrile, respectively. These compounds are unique examples of structurally characterized actinide complexes with a BTBP molecule; this ligand adopts a planar conformation in the equatorial plane of the {UO2}2+ ion. In pyridine, 1 is dissociated into [UO2(OTf)2(py)3] and free CyMe4BTBP and the thermodynamic parameters (K, ΔH, ΔS) of this equilibrium have been determined by 1H NMR spectroscopy. The ethoxide derivative [UO2(OEt)(CyMe4BTBP)][OTf] (5) crystallized from a solution of 1 in a mixture of ethanol and acetone under air, and the dinuclear μ-oxo complex [{UO2(CyMe4BTBP)}2(μ-O)][I]2
(6) was obtained from [UO2I(thf)2.7] and CyMe4BTBP. The crystal structures of 6 and of the analogous derivatives [{UO2(py)4}2(μ-O)][I]2
(7) and [{UO2(TPTZ)(py)}2(μ-O)][I3]2
(8) exhibit a flexible [{UO2}–O–{UO2}]2+ moiety.
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40
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Arliguie T, Belkhiri L, Bouaoud SE, Thuéry P, Villiers C, Boucekkine A, Ephritikhine M. Lanthanide(III) and actinide(III) complexes [M(BH4)2 (THF)5][BPh4] and [M(BH4)2(18-crown-6)][BPh4] (M = Nd, Ce, U): synthesis, crystal structure, and density functional theory investigation of the covalent contribution to metal-borohydride bonding. Inorg Chem 2009; 48:221-30. [PMID: 19053334 DOI: 10.1021/ic801685v] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of [M(BH4)3(THF)3] with NEt3HBPh4 in THF afforded the cationic complexes [M(BH4)2(THF)5][BPh4] [M = U (1), Nd (2), Ce (3)] which were transformed into [M(BH4)2(18-crown-6)][BPh4] [M = U (4), Nd (5), Ce (6)] in the presence of 18-crown-6; [U(BH4)2(18-thiacrown-6)][BPh4] (7) was obtained from 1 and 18-thiacrown-6 in tetrahydro-thiophene. Compounds 1, 3.C4H8S, 4.THF, 5, and 6.THF exhibit a penta- or hexagonal bipyramidal crystal structure with the two terdentate borohydride ligands in apical positions; the BH4 groups in the crystals of 7.C4H8S are in relative cis positions, and the thiacrown-ether presents a saddle shape, with two diametrically opposite sulfur atoms bound to uranium in trans positions. The crystal structures of these complexes, as well as those of previously reported [M(BH4)2(THF)5]+ cations, do not reveal any clear-cut lanthanide(III)/actinide(III) differentiation. The structural data obtained for [M(BH4)2(18-crown-6)]+ (M = U, Ce) by relativistic density functional theory (DFT) calculations are indicative of a small shortening of the U...B with respect to the Ce...B distance, which is accompanied by a lengthening of the U-Hb bonds and an opening of the Hb-B-Hb angle (Hb = bridging hydrogen atom of the eta3-BH4 ligand). The Mulliken population analysis and the natural bond orbital analysis indicate that the BH4 -->M(III) donation is greater for M = U than for M = Ce, as well as the overlap population of the M-Hb bond, thus showing a better interaction between the uranium 5f orbitals and the Hb atoms. The more covalent character of the B-H-U three-center two-electron bond was confirmed by the molecular orbital (MO) analysis. Three MOs represent the pi bonding interactions between U(III) and the three Hb atoms with significant 6d and 5f orbital contributions. These MOs in the cerium(III) complex exhibit a much lesser metallic weight with practically no participation of the 4f orbitals.
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Affiliation(s)
- Thérèse Arliguie
- CEA, IRAMIS, Service de Chimie Moléculaire, CNRS URA 331, CEA/Saclay, 91191 Gif-sur-Yvette, France
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41
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Elkechai A, Boucekkine A, Belkhiri L, Amarouche MH, Clappe C, Hauchard D, Ephritikhine M. A DFT and experimental investigation of the electron affinity of the triscyclopentadienyl uranium complexes Cp3UX. Dalton Trans 2009:2843-9. [DOI: 10.1039/b820873e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Fourmigué M. Magnetic Properties of Radical, Crystalline Mixed Cyclopentadienyl/Dithiolene Complexes. TOP ORGANOMETAL CHEM 2009. [DOI: 10.1007/978-3-642-00408-7_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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44
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Roger M, Belkhiri L, Arliguie T, Thuéry P, Boucekkine A, Ephritikhine M. Uranium and Lanthanide Complexes with the 2-Mercapto Benzothiazolate Ligand: Evidence for a Specific Covalent Binding Site in the Differentiation of Isostructural Lanthanide(III) and Actinide(III) Compounds. Organometallics 2007. [DOI: 10.1021/om7007315] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mathieu Roger
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
| | - Lotfi Belkhiri
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
| | - Thérèse Arliguie
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
| | - Pierre Thuéry
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
| | - Abdou Boucekkine
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
| | - Michel Ephritikhine
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA/Saclay 91191 Gif-sur-Yvette, France, Laboratoire de Chimie Moléculaire (LACMOM), Département de Chimie, Faculté des Sciences, Université Mentouri de Constantine, BP 325, Route de l’Aéroport Ain El Bey, 25017 Constantine, Algeria, and UMR CNRS 6226 Sciences Chimiques de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes, France
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45
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Gaunt AJ, Reilly SD, Enriquez AE, Scott BL, Ibers JA, Sekar P, Ingram KIM, Kaltsoyannis N, Neu MP. Experimental and Theoretical Comparison of Actinide and Lanthanide Bonding in M[N(EPR2)2]3 Complexes (M = U, Pu, La, Ce; E = S, Se, Te; R = Ph, iPr, H). Inorg Chem 2007; 47:29-41. [DOI: 10.1021/ic701618a] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew J. Gaunt
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Sean D. Reilly
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Alejandro E. Enriquez
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Brian L. Scott
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - James A. Ibers
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Perumal Sekar
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Kieran I. M. Ingram
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Nikolas Kaltsoyannis
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Mary P. Neu
- Chemistry Division, Plutonium Manufacturing and Technology Division, Materials Physics and Applications Division, and Associate Directorate for Chemistry, Life, and Earth Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, and Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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46
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Zhang ZX, Li YR, Liu RT, Chen ZX, Weng LH, Zhou XG. Insertion reaction of elemental sulfur into the Ln–C bond: Synthesis and characterization of [(C5H4SiMe2tBu)2Ln(μ-SR)]2 (R=Me, Ln=Yb, Er, Dy, Y; R=nBu, Ln=Yb, Dy). Polyhedron 2007. [DOI: 10.1016/j.poly.2007.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Evans WJ, Miller KA, Ziller JW, Greaves J. Analysis of Uranium Azide and Nitride Complexes by Atmospheric Pressure Chemical Ionization Mass Spectrometry. Inorg Chem 2007; 46:8008-18. [PMID: 17705468 DOI: 10.1021/ic7006099] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Atmospheric pressure chemical ionization mass spectrometry (APCI-MS) has been used to characterize the air-sensitive paramagnetic organouranium azide and nitride complexes [(C5Me5)2UN3(mu-N3)]3 and [(C5Me5)U(mu-I)2]3N, respectively. The trimetallic complex [(C5Me5)U(mu-I)2]3E had been identified by X-ray crystallography, but the data did not definitively identify E as N3- versus O2- or (OH)-, a common problem in heavy-element nitride complexes involving metals with variable oxidation states. A comparison of the 250 degrees C APCI-MS spectra of products made from NaN3 and Na15NNN showed mixed [M]+ and [M + H]+ envelopes at expected ion intensities for the 14N and 15N isotopomers. A compilation of U-C(C5Me5) and U-I bond distance data for U3+ and U4+ is also reported that shows that the ranges for the two oxidation states have significant overlap.
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Affiliation(s)
- William J Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025, USA.
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48
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Maynadié, J, Berthet JC, Thuéry P, Ephritikhine M. Cyanide Metallocenes of Trivalent f-Elements. Organometallics 2007. [DOI: 10.1021/om061131x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jérôme Maynadié,
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, Laboratoire Claude Fréjacques, CEA/Saclay, 91191 Gif-sur-Yvette, France
| | - Jean-Claude Berthet
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, Laboratoire Claude Fréjacques, CEA/Saclay, 91191 Gif-sur-Yvette, France
| | - Pierre Thuéry
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, Laboratoire Claude Fréjacques, CEA/Saclay, 91191 Gif-sur-Yvette, France
| | - Michel Ephritikhine
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, Laboratoire Claude Fréjacques, CEA/Saclay, 91191 Gif-sur-Yvette, France
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49
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Maynadié J, Berthet JC, Thuéry P, Ephritikhine M. The first cyclopentadienyl complex of uranyl. Chem Commun (Camb) 2007:486-8. [PMID: 17252103 DOI: 10.1039/b617700j] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The U(IV) linear pentacyano metallocene [U(C(5)Me(5))(2)(CN)(5)][NEt(4)](3) reacted with 2 molar equivalents of pyridine N-oxide in THF or acetonitrile to give the U(VI) complex [UO(2)(C(5)Me(5))(CN)(3)][NEt(4)](2), the first uranyl species containing the cyclopentadienyl ligand; the crystal structure revealed that the steric effects of the (C(5)Me(5)) ligand force the {UO(2)}2+ ion to deviate from linearity.
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Affiliation(s)
- Jérôme Maynadié
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, Laboratoire Claude Fréjacques, CEA Saclay, Gif-sur-Yvette, 91191, France
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50
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Hunt PA. Organolanthanide mediated catalytic cycles: a computational perspective. Dalton Trans 2007:1743-54. [PMID: 17471368 DOI: 10.1039/b700876g] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this perspective the contribution of recent theoretical studies to our understanding of lanthanide (Ln) catalysis is explored. In general, the results of computational studies have proven consistent with available experimental evidence. Considerable success has been obtained in elucidating the mechanisms for C-H bond activation (sigma-bond metathesis in particular) and the addition of C-X bonds across an unsaturated functionality (and the hydroamination of alkenes in particular). Ln catalysts are computationally challenging because relativistic effects are important, and large ligands are required to restrict high coordination numbers, in addition to limiting facile redistribution processes. Thus, key technical issues relating to the computational investigation of organolanthanide complexes are discussed. Increasing computational resources have seen studies expand from the optimisation of simple molecules to the study of catalytic cycles where the Ln is coordinated by larger and more complex ligands. The ability of theoretical studies to complement experimental developments by supplying a deeper understanding of the mechanistic process is reviewed with emphasis on the elucidation of transition state structures, intermediates, spectator ligand coordination, and negative entropy steps. Recent computational investigations of the catalytic cycle for Ln mediated hydroamination are a focus, as these have provided substantial and detailed rationalisations for the regio- and stereo-selectivity of inter- and intra-molecular hydroamination. Examination of transition state geometries and electronic structure appears to offer insights that could be used to facilitate the rational design of new Ln-based catalysts.
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Affiliation(s)
- Patricia A Hunt
- Imperial College London, Chemistry Department, London, UKSW7 2AZ.
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