1
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Chowdhury T, Wilson C, Farnaby JH. Activation and functionalisation of carbon dioxide by bis-tris(pyrazolyl)borate-supported divalent samarium and trivalent lanthanide silylamide complexes. Dalton Trans 2024; 53:11884-11894. [PMID: 38953525 DOI: 10.1039/d4dt01382d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Synthesis and reactivity with carbon dioxide (CO2) of divalent samarium in the bis-tris(pyrazolyl)borate ligand environment has been reported. In addition, CO2 activation and functionalisation by lanthanide silylamides in the bis-tris(pyrazolyl)borate ligand environment was demonstrated. Reduction of the Sm(III) precursor [Sm(Tp)2(OTf)] (Tp = hydrotris(1-pyrazolyl)borate; OTf = triflate) with KC8 yielded the insoluble Sm(II) multi-metallic coordination polymer [{Sm(Tp)2}n] 1-Sm. Addition of 1,2-dimethoxyethane (DME) to 1-Sm enabled isolation of the monomeric complex [Sm(Tp)2(DME)] 1-Sm(DME). Complex 1-Sm(DME) reduced CO2 to yield the oxalate-bridged dimeric Sm(III) complex [{Sm(Tp)2}2(μ-η2:η2-O2CCO2)] 2-Sm. The reactions of heteroleptic Ln(III) silylamide complexes [Ln(Tp)2(N'')] (Ln = Y, Sm; N'' = N(SiMe3)2) with CO2 yielded monomeric Ln(III) silyloxides [Ln(Tp)2(OSiMe3)] 3-Ln and trimethylsilyl isocyanate (OCNSiMe3). Complexes 3-Ln are the first crystallographically characterised examples of Ln(III)-OSiMe3 bonds accessed via CO2 activation and functionalisation. Full characterisation data are presented for all complexes, including solid-state molecular structure determination by single-crystal X-ray diffraction.
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Affiliation(s)
- Tajrian Chowdhury
- School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow, G12 8QQ, UK.
| | - Claire Wilson
- School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow, G12 8QQ, UK.
| | - Joy H Farnaby
- School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow, G12 8QQ, UK.
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2
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Xu H, Lv ZJ, Chen X, Xi Z, Wei J. N-Aryloxide-Amidinate Thorium Complexes. Inorg Chem 2024; 63:5530-5540. [PMID: 38457482 DOI: 10.1021/acs.inorgchem.3c04505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
An N-aryloxide-amidine ligand (1), [ONNO] ligand, integrating phenoxide (PhO-) and amidine ligands through methylene linkers, was employed in actinide chemistry. Upon reaction of the deprotonated ligand with ThCl4(DME)2 in ether, the corresponding dimer complex 2 was obtained. Upon treatment of 2 with KCp* (Cp* = Cp(Me)5) in tetrahydrofuran, the corresponding {[ONNO]ThIVCp*(LiCl)}2 (4) was obtained. In complex 2, the two ArO- arms bonded from the same ligand to different ThIV centers. In contrast, both ArO- arms coordinated to the same metal center in 4. Notably, when a mixture of 2 and bipyridine was treated with one or two equiv of KC8, the [ONNO]ThIV-bipyridyl•̅ radical dimer complex (5) and [ONNO]ThIV-bipyridyl2- dianionic dimer species (6) were obtained, respectively.
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Affiliation(s)
- Hanhua Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Ze-Jie Lv
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Xiao Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Junnian Wei
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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3
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Hsueh FC, Chen D, Rajeshkumar T, Scopelliti R, Maron L, Mazzanti M. Two-Electron Redox Reactivity of Thorium Supported by Redox-Active Tripodal Frameworks. Angew Chem Int Ed Engl 2024; 63:e202317346. [PMID: 38100190 DOI: 10.1002/anie.202317346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Indexed: 12/31/2023]
Abstract
The high stability of the + IVoxidation state limits thorium redox reactivity. Here we report the synthesis and the redox reactivity of two Th(IV) complexes supported by the arene-tethered tris(siloxide) tripodal ligands [(KOSiR2 Ar)3 -arene)]. The two-electron reduction of these Th(IV) complexes generates the doubly reduced [KTh((OSi(Ot Bu)2 Ar)3 -arene)(THF)2 ] (2OtBu ) and [K(2.2.2-cryptand)][Th((OSiPh2 Ar)3 -arene)(THF)2 ](2Ph -crypt) where the formal oxidation state of Th is +II. Structural and computational studies indicate that the reduction occurred at the arene anchor of the ligand. The robust tripodal frameworks store in the arene anchor two electrons that become available at the metal center for the two-electron reduction of a broad range of substrates (N2 O, COT, CHT, Ph2 N2 , Ph3 PS and O2 ) while retaining the ligand framework. This work shows that arene-tethered tris(siloxide) tripodal ligands allow implementation of two-electron redox chemistry at the thorium center while retaining the ligand framework unchanged.
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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
| | - Damien Chen
- 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
| | - 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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4
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Murillo J, Goodwin CAP, Stevens L, Fortier S, Gaunt AJ, Scott BL. Synthesis and comparison of iso-structural f-block metal complexes (Ce, U, Np, Pu) featuring η6-arene interactions. Chem Sci 2023; 14:7438-7446. [PMID: 37449075 PMCID: PMC10337748 DOI: 10.1039/d3sc02194g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 06/10/2023] [Indexed: 07/18/2023] Open
Abstract
Reaction of the terphenyl bis(anilide) ligand [{K(DME)2}2LAr] (LAr = {C6H4[(2,6-iPr2C6H3)NC6H4]2}2-) with trivalent chloride "MCl3" salts (M = Ce, U, Np) yields two distinct products; neutral LArM(Cl)(THF) (1M) (M = Np, Ce), and the "-ate" complexes [K(DME)2][(LAr)Np(Cl)2] (2Np) or ([LArM(Cl)2(μ-K(X)2)])∞ (2Ce, 2U) (M = Ce, U) (X = DME or Et2O) (2M). Alternatively, analogous reactions with the iodide [MI3(THF)4] salts provide access to the neutral compounds LArM(I)(THF) (3M) (M = Ce, U, Np, Pu). All complexes exhibit close arene contacts suggestive of η6-interactions with the central arene ring of the terphenyl backbone, with 3M comprising the first structurally characterized Pu η6-arene moiety. Notably, the metal-arene bond metrics diverge from the predicted trends of metal-carbon interactions based on ionic radii, with the uranium complexes exhibiting the shortest M-Ccentroid distance in all cases. Overall, the data presents a systematic study of f-element M-η6-arene complexes across the early actinides U, Np, Pu, and comparison to cerium congeners.
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Affiliation(s)
- Jesse Murillo
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Conrad A P Goodwin
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Lauren Stevens
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
- Materials Physics and Applications Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Brian L Scott
- Materials Physics and Applications Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
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5
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Riedhammer J, Halter DP, Meyer K. Nonaqueous Electrochemistry of Uranium Complexes: A Guide to Structure-Reactivity Tuning. Chem Rev 2023. [PMID: 37134149 DOI: 10.1021/acs.chemrev.2c00903] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Uranium complexes can be stabilized in a wide range of oxidation states, ranging from UII to UVI and a very recent example of a UI complex. This review provides a comprehensive summary of electrochemistry data reported on uranium complexes in nonaqueous electrolyte, to serve as a clear point of reference for newly synthesized compounds, and to evaluate how different ligand environments influence experimentally observed electrochemical redox potentials. Data for over 200 uranium compounds are reported, together with a detailed discussion of trends observed across larger series of complexes in response to ligand field variations. In analogy to the traditional Lever parameter, we utilized the data to derive a new uranium-specific set of ligand field parameters UEL(L) that more accurately represent metal-ligand bonding situations than previously existing transition metal derived parameters. Exemplarily, we demonstrate UEL(L) parameters to be useful for the prediction of structure-reactivity correlations in order to activate specific substrate targets.
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Affiliation(s)
- Judith Riedhammer
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Dominik P Halter
- Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich (TUM), TUM School of Natural Sciences, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
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6
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Ward RJ, Del Rosal I, Kelley SP, Maron L, Walensky JR. Isolation of C1 through C4 derivatives from CO using heteroleptic uranium(iii) metallocene aryloxide complexes. Chem Sci 2023; 14:2024-2032. [PMID: 36845919 PMCID: PMC9945253 DOI: 10.1039/d2sc06375a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/27/2023] [Indexed: 02/09/2023] Open
Abstract
The conversion of C1 feedstock molecules such as CO into commodity chemicals is a desirable, but challenging, endeavour. When the U(iii) complex, [(C5Me5)2U(O-2,6- t Bu2-4-MeC6H2)], is exposed to 1 atm of CO, only coordination is observed by IR spectroscopy as well as X-ray crystallography, unveiling a rare structurally characterized f element carbonyl. However, using [(C5Me5)2(MesO)U (THF)], Mes = 2,4,6-Me3C6H2, reaction with CO forms the bridging ethynediolate species, [{(C5Me5)2(MesO)U}2(μ2-OCCO)]. While ethynediolate complexes are known, their reactivity has not been reported in much detail to afford further functionalization. For example, addition of more CO to the ethynediolate complex with heating forms a ketene carboxylate, [{(C5Me5)2(MesO)U}2(μ 2:κ 2:η 1-C3O3)], which can be further reacted with CO2 to yield a ketene dicarboxylate complex, [{(C5Me5)2(MesO)U}2(μ 2:κ 2:κ 2-C4O5)]. Since the ethynediolate showed reactivity with more CO, we explored its reactivity further. A [2 + 2] cycloaddition is observed with diphenylketene to yield [{(C5Me5)2U}2(OC(CPh2)C([double bond, length as m-dash]O)CO)] with concomitant formation of [(C5Me5)2U(OMes)2]. Surprisingly, reaction with SO2 shows rare S-O bond cleavage to yield the unusual [(O2CC(O)(SO)]2- bridging ligand between two U(iv) centres. All complexes have been characterized using spectroscopic and structural methods, and the reaction of the ethynediolate with CO to form the ketene carboxylate has been investigated computationally as well as the reaction with SO2.
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Affiliation(s)
- Robert J Ward
- Department of Chemistry, University of Missouri Columbia MO 65211 USA
| | - Iker Del Rosal
- Universite de Toulouse, CNRS, INSA, UMR UMR 5215 LPCNO 135 Avenue de Ranguiel 31077 Toulouse France
| | - Steven P Kelley
- Department of Chemistry, University of Missouri Columbia MO 65211 USA
| | - Laurent Maron
- Universite de Toulouse, CNRS, INSA, UMR UMR 5215 LPCNO 135 Avenue de Ranguiel 31077 Toulouse France
| | - Justin R Walensky
- Department of Chemistry, University of Missouri Columbia MO 65211 USA
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7
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Löffler ST, Heinemann FW, Carpentier A, Maron L, Meyer K. Molecular and Electronic Structure of Linear Uranium Metallocenes Stabilized by Pentabenzyl-Cyclopentadienyl Ligands. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sascha T. Löffler
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Ambre Carpentier
- CNRS, & INSA, LPCNO, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Laurent Maron
- CNRS, & INSA, LPCNO, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Karsten Meyer
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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8
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Ward RJ, Kelley SP, Lukens WW, Walensky JR. Reduction of CO 2 and CS 2 with Uranium(III) Metallocene Aryloxides. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert J. Ward
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Steven P. Kelley
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Wayne W. Lukens
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Justin R. Walensky
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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9
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Liang H, Beweries T, Francke R, Beller M. Molecular Catalysts for the Reductive Homocoupling of CO 2 towards C 2+ Compounds. Angew Chem Int Ed Engl 2022; 61:e202200723. [PMID: 35187799 PMCID: PMC9311439 DOI: 10.1002/anie.202200723] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Indexed: 11/06/2022]
Abstract
The conversion of CO2 into multicarbon (C2+ ) compounds by reductive homocoupling offers the possibility to transform renewable energy into chemical energy carriers and thereby create "carbon-neutral" fuels or other valuable products. Most available studies have employed heterogeneous metallic catalysts, but the use of molecular catalysts is still underexplored. However, several studies have already demonstrated the great potential of the molecular approach, namely, the possibility to gain a deep mechanistic understanding and a more precise control of the product selectivity. This Minireview summarizes recent progress in both the thermo- and electrochemical reductive homocoupling of CO2 toward C2+ products mediated by molecular catalysts. In addition, reductive CO homocoupling is discussed as a model for the further conversion of intermediates obtained from CO2 reduction, which may serve as a source of inspiration for developing novel molecular catalysts in the future.
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Affiliation(s)
- Hong‐Qing Liang
- Leibniz-Institute for CatalysisAlbert-Einstein-Strasse 29a18059RostockGermany
| | - Torsten Beweries
- Leibniz-Institute for CatalysisAlbert-Einstein-Strasse 29a18059RostockGermany
| | - Robert Francke
- Leibniz-Institute for CatalysisAlbert-Einstein-Strasse 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institute for CatalysisAlbert-Einstein-Strasse 29a18059RostockGermany
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10
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Sinhababu S, Lakliang Y, Mankad NP. Recent advances in cooperative activation of CO 2 and N 2O by bimetallic coordination complexes or binuclear reaction pathways. Dalton Trans 2022; 51:6129-6147. [PMID: 35355033 DOI: 10.1039/d2dt00210h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The gaseous small molecules, CO2 and N2O, play important roles in climate change and ozone layer depletion, and they hold promise as underutilized reagents and chemical feedstocks. However, productive transformations of these heteroallenes are difficult to achieve because of their inertness. In nature, these gases are cycled through ecological systems by metalloenzymes featuring multimetallic active sites that employ cooperative mechanisms. Thus, cooperative bimetallic chemistry is an important strategy for synthetic systems, as well. In this Perspective, recent advances (since 2010) in cooperative activation of CO2 and N2O are reviewed, including examples involving s-block, p-block, d-block, and f-block metals and different combinations thereof.
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Affiliation(s)
- Soumen Sinhababu
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA.
| | - Yutthana Lakliang
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA.
| | - Neal P Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA.
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11
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Marx M, Frauendorf H, Spannenberg A, Neumann H, Beller M. Revisiting Reduction of CO 2 to Oxalate with First-Row Transition Metals: Irreproducibility, Ambiguous Analysis, and Conflicting Reactivity. JACS AU 2022; 2:731-744. [PMID: 35373201 PMCID: PMC8970009 DOI: 10.1021/jacsau.2c00005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Construction of higher C≥2 compounds from CO2 constitutes an attractive transformation inspired by nature's strategy to build carbohydrates. However, controlled C-C bond formation from carbon dioxide using environmentally benign reductants remains a major challenge. In this respect, reductive dimerization of CO2 to oxalate represents an important model reaction enabling investigations on the mechanism of this simplest CO2 coupling reaction. Herein, we present common pitfalls encountered in CO2 reduction, especially its reductive coupling, based on established protocols for the conversion of CO2 into oxalate. Moreover, we provide an example to systematically assess these reactions. Based on our work, we highlight the importance of utilizing suitable orthogonal analytical methods and raise awareness of oxidative reactions that can likewise result in the formation of oxalate without incorporation of CO2. These results allow for the determination of key parameters, which can be used for tailoring of prospective catalytic systems and will promote the advancement of the entire field.
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Affiliation(s)
- Maximilian Marx
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Holm Frauendorf
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Anke Spannenberg
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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12
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Liang H, Beweries T, Francke R, Beller M. Molecular Catalysts for the Reductive Homocoupling of CO
2
towards C
2+
Compounds. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hong‐Qing Liang
- Leibniz-Institute for Catalysis Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Torsten Beweries
- Leibniz-Institute for Catalysis Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Robert Francke
- Leibniz-Institute for Catalysis Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institute for Catalysis Albert-Einstein-Strasse 29a 18059 Rostock Germany
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13
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Murillo J, Bhowmick R, Harriman KLM, Gomez-Torres A, Wright J, Meulenberg RW, Miró P, Metta-Magaña A, Murugesu M, Vlaisavljevich B, Fortier S. Actinide arene-metalates: ion pairing effects on the electronic structure of unsupported uranium-arenide sandwich complexes. Chem Sci 2021; 12:13360-13372. [PMID: 34777754 PMCID: PMC8528047 DOI: 10.1039/d1sc03275e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/09/2021] [Indexed: 11/21/2022] Open
Abstract
Addition of [UI2(THF)3(μ-OMe)]2·THF (2·THF) to THF solutions containing 6 equiv. of K[C14H10] generates the heteroleptic dimeric complexes [K(18-crown-6)(THF)2]2[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2·4THF (118C6·4THF) and {[K(THF)3][U(η6-C14H10)(η4-C14H10)(μ-OMe)]}2 (1THF) upon crystallization of the products in THF in the presence or absence of 18-crown-6, respectively. Both 118C6·4THF and 1THF are thermally stable in the solid-state at room temperature; however, after crystallization, they become insoluble in THF or DME solutions and instead gradually decompose upon standing. X-ray diffraction analysis reveals 118C6·4THF and 1THF to be structurally similar, possessing uranium centres sandwiched between bent anthracenide ligands of mixed tetrahapto and hexahapto ligation modes. Yet, the two complexes are distinguished by the close contact potassium-arenide ion pairing that is seen in 1THF but absent in 118C6·4THF, which is observed to have a significant effect on the electronic characteristics of the two complexes. Structural analysis, SQUID magnetometry data, XANES spectral characterization, and computational analyses are generally consistent with U(iv) formal assignments for the metal centres in both 118C6·4THF and 1THF, though noticeable differences are detected between the two species. For instance, the effective magnetic moment of 1THF (3.74 μB) is significantly lower than that of 118C6·4THF (4.40 μB) at 300 K. Furthermore, the XANES data shows the U LIII-edge absorption energy for 1THF to be 0.9 eV higher than that of 118C6·4THF, suggestive of more oxidized metal centres in the former. Of note, CASSCF calculations on the model complex {[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2}2− (1*) shows highly polarized uranium–arenide interactions defined by π-type bonds where the metal contributions are primarily comprised by the 6d-orbitals (7.3 ± 0.6%) with minor participation from the 5f-orbitals (1.5 ± 0.5%). These unique complexes provide new insights into actinide–arenide bonding interactions and show the sensitivity of the electronic structures of the uranium atoms to coordination sphere effects. Use of Chatt metal-arene protocols with uranium leads to the synthesis of the first well-characterized, unsupported actinide–arenide sandwich complexes. The electronic structures of the actinide centres show a key sensitivity to ion pairing effects.![]()
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Affiliation(s)
- Jesse Murillo
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Rina Bhowmick
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Alejandra Gomez-Torres
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Joshua Wright
- Department of Physics, Illinois Institute of Technology Chicago Illinois 60616 USA
| | - Robert W Meulenberg
- Department of Physics and Astronomy and Frontier Institute for Research in Sensor Technologies, University of Maine Orono Maine 04469 USA
| | - Pere Miró
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Alejandro Metta-Magaña
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Bess Vlaisavljevich
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
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14
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Prat JR, Gaggioli CA, Cammarota RC, Bill E, Gagliardi L, Lu CC. Bioinspired Nickel Complexes Supported by an Iron Metalloligand. Inorg Chem 2020; 59:14251-14262. [PMID: 32954721 DOI: 10.1021/acs.inorgchem.0c02041] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nature utilizes multimetallic sites in metalloenzymes to enable multielectron chemical transformations at ambient conditions and low overpotentials. One such example of multimetallic cooperativity can be found in the C-cluster of Ni-carbon monoxide dehydrogenase (CODH), which interconverts CO and CO2. Toward a potential functional model of the C-cluster, a family of Ni-Fe bimetallic complexes was synthesized that contain direct metal-metal bonding interactions. The complexes were characterized by X-ray crystallography, various spectroscopies (NMR, EPR, UV-vis, Mössbauer), and theoretical calculations. The Ni-Fe bimetallic system has a reversible Fe(III)/Fe(II) redox couple at -2.10 V (vs Fc+/Fc). The Fe-based "redox switch" can turn on CO2 reactivity at the Ni(0) center by leveraging the Ni→Fe dative interaction to attenuate the Ni(0) electron density. The reduced Ni(0)Fe(II) species mediated the formal two-electron reduction of CO2 to CO, providing a Ni-CO adduct and CO32- as products. During the reaction, an intermediate was observed that is proposed to be a Ni-CO2 species.
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Affiliation(s)
| | | | | | - Eckhard Bill
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
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15
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Petz W, Neumüller B, Heitbaum M, Weller F. About the Reaction of C(PPh
3
)
2
with [M(CO)
6
] (M = Cr, Mo): Unusual Formation of μ‐Carbonato Complexes of Mo under Participation of THF. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wolfgang Petz
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Strasse 35032 Marburg Germany
| | - Bernhard Neumüller
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Strasse 35032 Marburg Germany
| | - Maya Heitbaum
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Strasse 35032 Marburg Germany
| | - Frank Weller
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Strasse 35032 Marburg Germany
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16
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Haiduc I. Inverse coordination metal complexes with oxalate and sulfur, selenium and nitrogen analogues as coordination centers. Topology and systematization. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1789120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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17
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Boreen MA, Gould CA, Booth CH, Hohloch S, Arnold J. Structure and magnetism of a tetrahedral uranium(iii) β-diketiminate complex. Dalton Trans 2020; 49:7938-7944. [PMID: 32495782 DOI: 10.1039/d0dt01599g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the functionalisation of the previously reported uranium(iii) β-diketiminate complex (BDI)UI2(THF)2 (1) with one and two equivalents of a sterically demanding 2,6-diisopropylphenolate ligand (ODipp) leading to the formation of two heteroleptic complexes: [(BDI)UI(ODipp)]2 (2) and (BDI)U(ODipp)2 (3). The latter is a rare example of a tetrahedral uranium(iii) complex, and it shows single-molecule magnet behaviour.
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Affiliation(s)
- Michael A Boreen
- Department of Chemistry, University of California, Berkeley, California 94720, USA.
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18
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Shah Bacha RU, Li L, Guo YR, Jing L, Pan QJ. Actinyl-Modified g-C 3N 4 as CO 2 Activation Materials for Chemical Conversion and Environmental Remedy via an Artificial Photosynthetic Route. Inorg Chem 2020; 59:8369-8379. [PMID: 32468810 DOI: 10.1021/acs.inorgchem.0c00791] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
With the reported CO2 activation for the oxidation of benzene to phenol (-ENE → -OL) by the graphitic carbon nitride g-C3N4 (CN) via an artificial photosynthetic route as inspiration, high-valent actinyls (AnmO2)n+ (An = U, Np, Pu; m = VI, V; n = 2, 1) have been introduced for its further modification. Our calculations indicate thermodynamic spontaneity in the feasibility of g-C3N4-(AnmO2)n+ (CN-Anm) formation. The magnificent structural and electronic properties of CN-Anm are utilized for CO2 activation in terms of the rarely studied -ENE → -OL conversion. The calculated free energies show that most steps of the catalytic cycle are favored by CN-Anm complexes. The first step (carbamate formation) is slightly endothermic in all cases, where CN-U is 0.51 eV higher than CN and CN-Pu is -0.01 eV lower. All benzene addition reactions release energy, with that for CN-U being the lowest. The phenolate formation is favored by some actinyl complexes over CN, and CN-U is only 0.23 eV higher. The phenol release (resulting in formamide complexes) and CO desorption are exothermic for all CN-Anm. The overall process suggests the improved catalytic performance of actinyl-modified CN materials, and the slightly depleted uranyl-carbon nitride could be one of the promising catalysts.
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Affiliation(s)
- Raza Ullah Shah Bacha
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Li Li
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Qing-Jiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
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19
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Waldschmidt P, Hoerger CJ, Riedhammer J, Heinemann FW, Hauser CT, Meyer K. CO 2 Activation with Formation of Uranium Carbonate Complexes in a Closed Synthetic Cycle. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pablo Waldschmidt
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Christopher J. Hoerger
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Judith Riedhammer
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Christina T. Hauser
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Karsten Meyer
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Inorganic Chemistry, Egerlandstraße 1, 91058 Erlangen, Germany
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20
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Liu Y, Liu R, Ding W, Wang D. Evaluation of Influencing Factors in Tetravalent Uranium Complex-Mediated CO 2 Functionalization by Density Functional Theory. J Phys Chem A 2020; 124:2683-2693. [PMID: 32154718 DOI: 10.1021/acs.jpca.0c00724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The functionalization of CO2 mediated by a series of U(IV) mixed-sandwich compounds, (COTTIPS2)Cp*UR (R = -CH3, -CH2Ph, -CH2TMS, -CH(TMS)2, -NHPh, -OPh, -SPh, -SePh; COTTIPS2 = C8H6(SiiPr3-1,4)2; Cp* = C5Me5; TMS = SiMe3), was investigated by the density functional theory method. A two-step mechanism was revealed, in which the insertion of CO2 into the U-C bond was identified as the rate-determining step via a transition state featured by a four-membered ring with a free-energy barrier of 18.8 kcal/mol to the reaction of the (COTTIPS2)Cp*UCH3 system. The whole reaction was strongly exothermic by 45.0 kcal/mol. Substitution effect was discussed, including the bulkiness of the R group and the nature of the ligating atom, and steric hindrance and electrostatic interactions were found to be responsible for the observed variation in reactivity. The reactivity of U(III) and U(IV) complexes in CO2 functionalization was also compared and discussed. The results were consistent with experimental studies and complemented with molecular level of understanding on the mechanisms of CO2 functionalization promoted by tetravalent U complexes.
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Affiliation(s)
- Yanxiao Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ruozhuang Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wanjian Ding
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Dongqi Wang
- Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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21
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Talbi F, Castro L, Kias F, Elkechai A, Boucekkine A, Ephritikhine M. Theoretical investigation of the reactivity of bispentamethylcyclopentadienyl uranium(IV) bisthiolate complexes with the heteroallene molecules CS2 and CO2. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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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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23
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Inman CJ, Cloke FGN. The experimental determination of Th(iv)/Th(iii) redox potentials in organometallic thorium complexes. Dalton Trans 2019; 48:10782-10784. [PMID: 31183480 DOI: 10.1039/c9dt01553a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first ThIV/ThIII redox couple values have been determined experimentally using cyclic voltammetry (CV), which has been facilitated by the use of [nBu4N][BPh4] as a supporting electrolyte in THF. Th(iv) and Th(iii) metallocene compounds have been studied and their redox couple values are in the range of -2.96 V to -3.32 V vs FeCp2+/0.
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Affiliation(s)
- Christopher J Inman
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
| | - F Geoffrey N Cloke
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
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24
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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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25
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Hoerger CJ, Heinemann FW, Louyriac E, Rigo M, Maron L, Grützmacher H, Driess M, Meyer K. Cyaarside (CAs - ) and 1,3-Diarsaallendiide (AsCAs 2- ) Ligands Coordinated to Uranium and Generated via Activation of the Arsaethynolate Ligand (OCAs - ). Angew Chem Int Ed Engl 2019; 58:1679-1683. [PMID: 30427562 DOI: 10.1002/anie.201811332] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/12/2018] [Indexed: 11/07/2022]
Abstract
Reaction of the trivalent uranium complex [((Ad,Me ArO)3 N)U(DME)] with one molar equiv [Na(OCAs)(dioxane)3 ], in the presence of 2.2.2-crypt, yields [Na(2.2.2-crypt)][{((Ad,Me ArO)3 N)UIV (THF)}(μ-O){((Ad,Me ArO)3 N)UIV (CAs)}] (1), the first example of a coordinated η1 -cyaarside ligand (CAs- ). Formation of the terminal CAs- is promoted by the highly reducing, oxophilic UIII precursor [((Ad,Me ArO)3 N)U(DME)] and proceeds through reductive C-O bond cleavage of the bound arsaethynolate anion, OCAs- . If two equiv of OCAs- react with the UIII precursor, the binuclear, μ-oxo-bridged U2 IV/IV complex [Na(2.2.2-crypt)]2 [{((Ad,Me ArO)3 N)UIV }2 (μ-O)(μ-AsCAs)] (2), comprising the hitherto unknown μ:η1 ,η1 -coordinated (AsCAs)2- ligand, is isolated. The mechanistic pathway to 2 involves the decarbonylation of a dimeric intermediate formed in the reaction of 1 with OCAs- . An alternative pathway to complex 2 is by conversion of 1 via addition of one further equiv of OCAs- .
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Affiliation(s)
- Christopher J Hoerger
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Elisa Louyriac
- Université de Toulouse et CNRS INSA, 135 avenue de Rangueil, 31077, Toulouse, France
| | - Massimo Rigo
- Department of Chemistry, Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17. Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Laurent Maron
- Université de Toulouse et CNRS INSA, 135 avenue de Rangueil, 31077, Toulouse, France
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1, Hönggerberg, 8093 Zürich, Switzerland
| | - Matthias Driess
- Department of Chemistry, Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17. Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
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26
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Hoerger CJ, Heinemann FW, Louyriac E, Rigo M, Maron L, Grützmacher H, Driess M, Meyer K. Cyaarside (CAs
−
) and 1,3‐Diarsaallendiide (AsCAs
2−
) Ligands Coordinated to Uranium and Generated via Activation of the Arsaethynolate Ligand (OCAs
−
). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christopher J. Hoerger
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-University of Erlangen-Nürnberg (FAU) Egerlandstrasse 1 91058 Erlangen Germany
| | - Frank W. Heinemann
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-University of Erlangen-Nürnberg (FAU) Egerlandstrasse 1 91058 Erlangen Germany
| | - Elisa Louyriac
- Université de Toulouse et CNRS INSA 135 avenue de Rangueil 31077 Toulouse France
| | - Massimo Rigo
- Department of ChemistryMetalorganics and Inorganic MaterialsTechnische Universität Berlin Straße des 17. Juni 135, Sekr. C2 10623 Berlin Germany
| | - Laurent Maron
- Université de Toulouse et CNRS INSA 135 avenue de Rangueil 31077 Toulouse France
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog Weg 1 Hönggerberg 8093 Zürich Switzerland
| | - Matthias Driess
- Department of ChemistryMetalorganics and Inorganic MaterialsTechnische Universität Berlin Straße des 17. Juni 135, Sekr. C2 10623 Berlin Germany
| | - Karsten Meyer
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-University of Erlangen-Nürnberg (FAU) Egerlandstrasse 1 91058 Erlangen Germany
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27
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Willauer AR, Toniolo D, Fadaei-Tirani F, Yang Y, Laurent M, Mazzanti M. Carbon dioxide reduction by dinuclear Yb(ii) and Sm(ii) complexes supported by siloxide ligands. Dalton Trans 2019; 48:6100-6110. [DOI: 10.1039/c9dt00554d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Low-coordinate dinuclear lanthanide complexes supported by siloxides effect the reduction of carbon dioxide to both carbonate and oxalate, but the cooperative binding of CO2 to the two Ln(ii) cations in the dimer favours oxalate formation.
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Affiliation(s)
- Aurélien R. Willauer
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Davide Toniolo
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Yan Yang
- Université de Toulouse et CNRS INSA
- UPS
- CNRS
- UMR 5215
- LPCNO
| | - Maron Laurent
- Université de Toulouse et CNRS INSA
- UPS
- CNRS
- UMR 5215
- LPCNO
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
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28
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Myers AJ, Rungthanaphatsophon P, Behrle AC, Vilanova SP, Kelley SP, Lukens WW, Walensky JR. Structure and properties of [(4,6- tBu 2C 6H 2O) 2Se] 2An(THF) 2, An = U, Np, and their reaction with p-benzoquinone. Chem Commun (Camb) 2018; 54:10435-10438. [PMID: 30167613 DOI: 10.1039/c8cc05244a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of U(iv) and Np(iv) selenium bis(phenolate) complexes are reported. The reaction of two equivalents of the U(iv) complex with p-benzoquinone results in the formation of a U(v)-U(v) species with a bridging reduced quinone. This represents a rare example of high-valent uranium chemistry as well as a rare example of a neptunium aryloxide complex.
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29
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Edelmann FT. Lanthanides and actinides: Annual survey of their organometallic chemistry covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Hohloch S, Garner ME, Parker BF, Arnold J. New supporting ligands in actinide chemistry: tetramethyltetraazaannulene complexes with thorium and uranium. Dalton Trans 2018; 46:13768-13782. [PMID: 28959804 DOI: 10.1039/c7dt02682j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the synthesis, characterization, and preliminary reactivity of new heteroleptic thorium and uranium complexes supported by the macrocyclic TMTAA ligand (TMTAA = Tetramethyl-tetra-aza-annulene). The dihalide complexes Th(TMTAA)Cl2(THF)2 (1), [UCl2(TMTAA)]2 (2) and U(TMTAA)I2 (3) are further functionalized to the Cp* derivatives ThCp*(TMTAA)Cl (4), UCp*(TMTAA)Cl (5) and UCp*(TMTAA)I (6) (Cp* = pentamethylcyclopentadienide). Compounds 4-6 are also obtained through a one-pot reaction from standard thorium(iv) and uranium(iv) starting materials, Li2TMTAA and KCp*. Complexes 1-6 function as valuable starting materials for salt metathesis chemistry. Treatment of precursors 4 or 5 with trimethylsilylmethyllithium (LiCH2TMS) results in the new actinide TMTAA alkyl complexes ThCp*(TMTAA)(CH2TMS) (7) and UCp*(TMTAA)(CH2TMTS) (8), respectively. The TMTAA-derived alkyl complexes (7 and 8) show unexpected stability and are stable for several weeks at room temperature in solution and in the solid-state. Additionally, double substitution of the halide ligands in 1-3 shows a strong dependence on the nucleophile used. While weaker nucleophiles, such as amides, and more sterically demanding nucleophiles, such as Cp (Cp = cyclopenadienide), favour the formation of bis-TMTAA "sandwich" complexes [An(TMTAA)2] (An = Th (9) and An = U (10)), the use of oxygen-functionalized ligands like the ODipp anion (Dipp = diisopropylphenyl) results in the formation of the doubly substituted species Th(ODipp)2TMTAA (11) and U(ODipp)2TMTAA (12). We also describe the divergent reactivity of the TMTAA ligand towards uranium(iii). Unlike the syntheses of actinide(iv) TMTAA complexes, the synthesis of a uranium(iii) TMTAA was not successful and only uranium(iv) species could be obtained.
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Affiliation(s)
- Stephan Hohloch
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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31
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Xémard M, Goudy V, Braun A, Tricoire M, Cordier M, Ricard L, Castro L, Louyriac E, Kefalidis CE, Clavaguéra C, Maron L, Nocton G. Reductive Disproportionation of CO2 with Bulky Divalent Samarium Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00630] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mathieu Xémard
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Violaine Goudy
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Augustin Braun
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Maxime Tricoire
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Marie Cordier
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Louis Ricard
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
| | - Ludovic Castro
- LPCNO,
UMR 5215, Université de Toulouse-CNRS, INSA, UPS, Toulouse, France
| | - Elisa Louyriac
- LPCNO,
UMR 5215, Université de Toulouse-CNRS, INSA, UPS, Toulouse, France
| | | | - Carine Clavaguéra
- Laboratoire
de Chimie Physique, CNRS-Université Paris-Sud, Université Paris-Saclay, 15 avenue Jean Perrin, 91405 Orsay Cedex, France
| | - Laurent Maron
- LPCNO,
UMR 5215, Université de Toulouse-CNRS, INSA, UPS, Toulouse, France
| | - Grégory Nocton
- LCM,
CNRS, Ecole polytechnique, Université Paris-Saclay, Route de
Saclay, 91128 Palaiseau
Cedex, France
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32
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Fortier S, Aguilar-Calderón JR, Vlaisavljevich B, Metta-Magaña AJ, Goos AG, Botez CE. An N-Tethered Uranium(III) Arene Complex and the Synthesis of an Unsupported U–Fe Bond. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00429] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Bess Vlaisavljevich
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
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