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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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Specklin D, Boegli MC, Coffinet A, Escomel L, Vendier L, Grellier M, Simonneau A. An orbitally adapted push-pull template for N 2 activation and reduction to diazene-diide. Chem Sci 2023; 14:14262-14270. [PMID: 38098710 PMCID: PMC10718075 DOI: 10.1039/d3sc04390h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/19/2023] [Indexed: 12/17/2023] Open
Abstract
A Lewis superacidic bis(borane) C6F4{B(C6F5)2}2 was reacted with tungsten N2-complexes [W(N2)2(R2PCH2CH2PR2)2] (R = Ph or Et), affording zwitterionic boryldiazenido W(ii) complexes trans-[W(L)(R2PCH2CH2PR2)2(N2{B(C6F5)2(C6F4B(C6F5)3})] (L = ø, N2 or THF). These compounds feature only one N-B linkage of the covalent type, as a result of intramolecular boron-to-boron C6F5 transfer. Complex trans-[W(THF)(Et2PCH2CH2PEt2)2(N2{B(C6F5)2C6F4B(C6F5)3})] (5) was shown to split H2, leading to a seven-coordinate complex [W(H)2(Et2PCH2CH2PEt2)2(N2{B(C6F5)2}2C6F4)] (7). Interestingly, hydride storage at the metal triggers backward C6F5 transfer. This reverts the bis(boron) moiety to its bis(borane) state, now doubly binding the distal N, with structural parameters and DFT computations pointing to dative N→B bonding. By comparison with an N2 complex [W(H)2(Et2PCH2CH2PEt2)2(N2{B(C6F5)3}] (10) differing only in the Lewis acid (LA), namely B(C6F5)3, coordinated to the distal N, we demonstrate that two-fold LA coordination imparts strong N2 activation up to the diazene-diide (N22-) state. To the best of our knowledge, this is the first example of a neutral LA coordination that induces reduction of N2.
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Affiliation(s)
- David Specklin
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Marie-Christine Boegli
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Anaïs Coffinet
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Léon Escomel
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Laure Vendier
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Mary Grellier
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
| | - Antoine Simonneau
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 route de Narbonne BP44099 F-31077 Toulouse Cedex 4 France
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3
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Synthesis and luminescent properties of new molecular compounds of divalent lanthanides LnCl2∙0.5H2O (Ln = Yb, Sm, Tm, and Eu). J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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4
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Dé QL, Orbay F, Vendier L, Simonneau A. Syntheses of N2-bridged heterobimetallic complexes, their structural and qualitative bonding analyses. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Jiang YF, Liu JC, Xu CQ, Li J, Xiao H. Breaking the scaling relations for efficient N2-to-NH3 conversion by a bowl active site design: Insight from LaRuSi and isostructural electrides. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64129-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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6
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Haimerl M, Graßl C, Seidl M, Piesch M, Scheer M. Conversion of E 4 (E 4 =P 4 , As 4 , AsP 3 ) by Ni(0) and Ni(I) Synthons - A Comparative Study. Chemistry 2021; 27:18129-18134. [PMID: 34730858 PMCID: PMC9298694 DOI: 10.1002/chem.202103372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 11/10/2022]
Abstract
The reactivity of white phosphorus and yellow arsenic towards two different nickel nacnac complexes is investigated. The nickel complexes [(L1 Ni)2 tol] (1, L1 =[{N(C6 H3 i Pr2 -2,6)C(Me)}2 CH]- ) and [K2 ][(L1 Ni)2 (μ,η1 : 1 -N2 )] (6) were reacted with P4 , As4 and the interpnictogen compound AsP3 , respectively, yielding the homobimetallic complexes [(L1 Ni)2 (μ-η2 ,κ1 :η2 ,κ1 -E4 )] (E=P (2 a), As (2 b), AsP3 (2 c)), [(L1 Ni)2 (μ,η3 : 3 -E3 )] (E=P (3 a), As (3 b)) and [K@18-c-6(thf)2 ][L1 Ni(η1 : 1 -E4 )] (E=P (7 a), As (7 b)), respectively. Heating of 2 a, 2 b or 2 c also leads to the formation of 3 a or 3 b. Furthermore, the reactivity of these compounds towards reduction agents was investigated, leading to [K2 ][(L1 Ni)2 (μ,η2 : 2 -P4 )] (4) and [K@18-c-6(thf)3 ][(L1 Ni)2 (μ,η3 : 3 -E3 )] (E=P (5 a), As (5 b)), respectively. Compound 4 shows an unusual planarization of the initial Ni2 P4 -prism. All products were comprehensively characterized by crystallographic and spectroscopic methods.
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Affiliation(s)
- Maria Haimerl
- Institute for Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Christian Graßl
- Institute for Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Michael Seidl
- Institute for Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Martin Piesch
- Institute for Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Manfred Scheer
- Institute for Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
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Boronski JT, Seed JA, Wooles AJ, Liddle ST. Fragmentation, catenation, and direct functionalisation of white phosphorus by a uranium(IV)-silyl-phosphino-carbene complex. Chem Commun (Camb) 2021; 57:5090-5093. [PMID: 33899851 DOI: 10.1039/d1cc01741a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Room temperature reaction of the uranium(iv)-carbene [U{C(SiMe3)(PPh2)}(BIPMTMS)(μ-Cl)Li(TMEDA)(μ-TMEDA)0.5]2 (1, BIPMTMS = C(PPh2NSiMe3)2) with white phosphorus (P4) produces the organo-P5 compound [P5{C(SiMe3)(PPh2)}2][Li(TMEDA)2] (2) and the uranium(iv)-methanediide [U{BIPMTMS}{Cl}{μ-Cl}2{Li(TMEDA)}] (3). This is an unprecedented example of cooperative metal-carbene P4 activation/insertion into a metal-carbon double bond and also an actinide complex reacting with P4 to directly form an organophosphorus species. Conducting the reaction at low temperature permits the isolation of the diuranium(iv) complex [{U(BIPMTMS)([μ-η2:η2-P2]C[SiMe3][PPh2])}2] (4), which then converts to 2 and 3. Thus, surprisingly, in contrast to all other actinide P4 reactivity, although this reaction produces catenation overall it proceeds via P4 cleavage to functionalised P2 units. Hence, this work establishes a proof of concept synthetic cycle for direct fragmentation, catenation, and functionalisation of P4.
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Affiliation(s)
- Josef T Boronski
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - John A Seed
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - Ashley J Wooles
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - Stephen T Liddle
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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8
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Tanabe Y, Nishibayashi Y. Comprehensive insights into synthetic nitrogen fixation assisted by molecular catalysts under ambient or mild conditions. Chem Soc Rev 2021; 50:5201-5242. [PMID: 33651046 DOI: 10.1039/d0cs01341b] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
N2 is fixed as NH3 industrially by the Haber-Bosch process under harsh conditions, whereas biological nitrogen fixation is achieved under ambient conditions, which has prompted development of alternative methods to fix N2 catalyzed by transition metal molecular complexes. Since the early 21st century, catalytic conversion of N2 into NH3 under ambient conditions has been achieved by using molecular catalysts, and now H2O has been utilized as a proton source with turnover frequencies reaching the values found for biological nitrogen fixation. In this review, recent advances in the development of molecular catalysts for synthetic N2 fixation under ambient or mild conditions are summarized, and potential directions for future research are also discussed.
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Affiliation(s)
- Yoshiaki Tanabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Yoshiaki Nishibayashi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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Abstract
The f‐block chemistry of phospholyl and arsolyl ligands, heavier p‐block analogues of substituted cyclopentadienyls (CpR, C5R5) where one or more CR groups are replaced by P or As atoms, is less developed than for lighter isoelectronic C5R5 rings. Heterocyclopentadienyl complexes can exhibit properties that complement and contrast with CpR chemistry. Given that there has been renewed interest in phospholyl and arsolyl f‐block chemistry in the last two decades, coinciding with a renaissance in f‐block solution chemistry, a review of this field is timely. Here, the syntheses of all structurally characterised examples of lanthanide and actinide phospholyl and arsolyl complexes to date are covered, including benzannulated derivatives, and together with group 3 complexes for completeness. The physicochemical properties of these complexes are reviewed, with the intention of motivating further research in this field.
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Affiliation(s)
- David P Mills
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M139PL, UK
| | - Peter Evans
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M139PL, UK
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Grünbauer R, Schwarzmaier C, Eberl M, Balázs G, Scheer M. The reactivity of the P4-butterfly ligand [{Cp'''Fe(CO)2}2(µ,η1:1-P4)] towards transition metal complexes: Coordination versus rearrangement. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Arnold PL, Halliday CJV, Puig-Urrea L, Nichol GS. Instantaneous and Phosphine-Catalyzed Arene Binding and Reduction by U(III) Complexes. Inorg Chem 2021; 60:4162-4170. [PMID: 33662207 DOI: 10.1021/acs.inorgchem.1c00327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Neutral arenes such as benzene have never been considered suitable ligands for electropositive actinide cations, yet we find that even simple UIII UX3 aryloxide complexes such as U(ODipp)3 bind and reduce arenes spontaneously at room temperature, forming inverse arene sandwich (IAS) complexes XnU(μ-C6D6)UXm (X = ODipp, n=2, m=3; X = OBMes2 n=m=2 or 3) (ODipp = OC6H3iPr2-2,6; Mes = 2,4,6-Me3-C6H2). In some of these cases, further arene reduction has occured as a result of X ligand redistribution. These unexpected spontaneous reactions explain the anomalous spectra and reported lack of further reactivity of strongly reducing UIII centers of U(ODipp)3. Phosphines that are not considered suitable ligands for actinides can catalyze the formation of the IAS complexes. This enables otherwise inaccessible asymmetric and less congested IAS complexes to be isolated and the bonding in this series compared.
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Affiliation(s)
- Polly L Arnold
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh EH9 3FJ, U.K
| | - Connor J V Halliday
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh EH9 3FJ, U.K
| | - Laura Puig-Urrea
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh EH9 3FJ, U.K
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, The King's Buildings, Edinburgh EH9 3FJ, U.K
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12
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Kuriyama S, Nishibayashi Y. Development of catalytic nitrogen fixation using transition metal complexes not relevant to nitrogenases. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.131986] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Grünbauer R, Balázs G, Scheer M. The Butterfly Complex [{Cp*Cr(CO) 3 } 2 (μ,η 1:1 -P 4 )] as a Versatile Ligand and Its Unexpected P 1 /P 3 Fragmentation. Chemistry 2020; 26:11722-11726. [PMID: 32657480 PMCID: PMC7540658 DOI: 10.1002/chem.202002957] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/09/2020] [Indexed: 01/23/2023]
Abstract
The versatile coordination behavior of the P4 butterfly complex [{Cp*Cr(CO)3 }2 (μ,η1:1 -P4 )] (1) towards Lewis acidic pentacarbonyl compounds of Cr, Mo and W is reported. The reaction of 1 with [W(CO)4 (nbd)] (nbd=norbornadiene) yields the complex [{Cp*Cr(CO)3 }2 (μ3 ,η1:1:1:1 -P4 ){W(CO)4 }] (2) in which 1 serves as a chelating P4 butterfly ligand. In contrast, reactions of 1 with [M(CO)4 (nbd)] (M=Cr (a), Mo (b)) result in the step-wise formation of [{Cp*Cr(CO)2 }2 (μ3 ,η3:1:1 -P4 ){M(CO)5 }] (3 a,b) and [{Cp*Cr(CO)2 }2 -(μ4 ,η3:1:1:1 -P4 ){M(CO)5 }2 ] (4 a,b) which contain a folded cyclo-P4 unit. Complex 4 a undergoes an unprecedented P1 /P3 -fragmentation yielding the cyclo-P3 complex [Cp*Cr(CO)2 (η3 -P3 )] (5) and the as yet unknown phosphinidene complex [Cp*Cr(CO)2 {Cr(CO)5 }2 (μ3 -P)] (6). The identity of 6 is confirmed by spectroscopic methods and by the in situ formation of [{Cp*Cr(CO)2 (tBuNC)}P{Cr(CO)5 }2 (tBuNC)] (7). DFT calculations throw light on the bonding situation of the reported products.
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Affiliation(s)
- Rebecca Grünbauer
- Institut für Anorganische ChemieUniversität Regensburg93051RegensburgGermany
| | - Gábor Balázs
- Institut für Anorganische ChemieUniversität Regensburg93051RegensburgGermany
| | - Manfred Scheer
- Institut für Anorganische ChemieUniversität Regensburg93051RegensburgGermany
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Kim S, Loose F, Chirik PJ. Beyond Ammonia: Nitrogen–Element Bond Forming Reactions with Coordinated Dinitrogen. Chem Rev 2020; 120:5637-5681. [DOI: 10.1021/acs.chemrev.9b00705] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sangmin Kim
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Florian Loose
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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Arnold PL, Ochiai T, Lam FYT, Kelly RP, Seymour ML, Maron L. Metallacyclic actinide catalysts for dinitrogen conversion to ammonia and secondary amines. Nat Chem 2020; 12:654-659. [DOI: 10.1038/s41557-020-0457-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 03/12/2020] [Indexed: 11/09/2022]
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Liu X, Xiang L, Wang C, Wang B, Leng X, Chen Y. Divalent Ytterbium Iodide Supported by β‐Diketiminato Based Tridentate Ligand: Synthesis, Structure and Small Molecule Activation
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaojuan Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Li Xiang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Chen Wang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
| | - Bingwu Wang
- Beijing National Laboratory of Molecular Science, State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Yaofeng Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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Tolpygin AO, Shavyrin AS, Cherkasov AV, Fukin GK, Del Rosal I, Maron L, Trifonov AA. Alternative (κ 1-N:η 6-arene vs.κ 2-N,N) coordination of a sterically demanding amidinate ligand: are size and electronic structure of the Ln ion decisive factors? Dalton Trans 2019; 48:8317-8326. [PMID: 31111858 DOI: 10.1039/c9dt01162e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The amine elimination reaction of equimolar amounts of ansa-bis(amidine) C6H4-1,2-{NC(tBu)NH(2,6-iPr2C6H3)}2 (L1H) and [(Me3Si)2N]2Yb(THF)2 affords a bis(amidinate) YbII complex [C6H4-1,2-{NC(tBu)N(2,6-iPr2C6H3)}2]Yb(THF) (1) in 68% yield. Complex 1 features a rather rare η1-amido:η6-arene coordination of both amidinate fragments to the YbII ion, resulting in the formation of a bent bis(arene) structure. Oxidation of 1 by I2 regardless of the molar ratio of reagents (2 : 1 or 1 : 1) leads to the formation of the YbIII species [{(2,6-iPr2C6H3)[double bond, length as m-dash]NC(tBu)NH}-C6H4-1,2-{NC(tBu)N(2,6-iPr2C6H3)}]YbI2(THF)2 (2) in which only one amidinate fragment is coordinated to the ytterbium ion in κ2-N,N'-chelating coordination mode, while the second NCN fragment is protonated in the course of the reaction and is not bound to the metal ion. The outcome of the salt metathesis reaction of LaCl3 with lithium amidinates [C6H4-1,2-{NC(tBu)N(2,6-R2C6H3)}2Li2] (R = Me, iPr) is proven to be strongly affected by the substituent 2,6-R2C6H3 on the amidinate nitrogens. When R = iPr, the salt metathesis reaction occurs smoothly and results in the formation of an ate-chloro-amidinate complex [C6H4-1,2-{NC(tBu)N(2,6-iPr2C6H3)}2]La(μ2-Cl)Li(THF)(μ2-Cl)2Li(THF)2 (3) in which the LaIII ion is coordinated by both amidinate fragments in a "classic"κ2-N,N'-chelating fashion. In the case of R = Me, the reaction requires prolonged heating for completion. Moreover, the salt metathesis reaction is accompanied by the fragmentation of the ligand and affords a trinuclear chloro-amidinate complex [C6H4-1,2-{NC(tBu)N(2,6-Me2C6H3)}2]La{[(tBu)C(N-2,6-Me2C6H3)2]La(THF)}2(μ2-Cl)4(μ3-Cl)2 (4) containing one dianionic ansa-bis(amidinate) and two monoanionic [(tBu)C(N-2,6-Me2C6H3)2] amidinate fragments. DFT calculations are conducted to determine the factor that governs this change in coordination mode and, in particular, the effect of the metal oxidation state.
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Affiliation(s)
- Aleksei O Tolpygin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 630950, Nizhny Novgorod, Russia
| | - Andrei S Shavyrin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 630950, Nizhny Novgorod, Russia
| | - Anton V Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 630950, Nizhny Novgorod, Russia
| | - Georgy K Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 630950, Nizhny Novgorod, Russia
| | - Iker Del Rosal
- Université de Toulouse, INSA, UPS, CNRS-UMR5215, LPCNO, Avenue de Rangueil 135, 31077 Toulouse, France
| | - Laurent Maron
- Université de Toulouse, INSA, UPS, CNRS-UMR5215, LPCNO, Avenue de Rangueil 135, 31077 Toulouse, France
| | - Alexander A Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 630950, Nizhny Novgorod, Russia and Institute of Organoelement compounds of Russian Academy of Sciences, Vavilova str. 28, 119334, Moscow, Russia.
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Green JP, Wells JAL, Orthaber A. Heavier pnictogens - treasures for optical electronic and reactivity tuning. Dalton Trans 2019; 48:4460-4466. [PMID: 30810143 DOI: 10.1039/c9dt00574a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We highlight recent advances in organopnictogen chemistry contrasting the properties of lighter and heavier pnictogens. Exploring new bonding situations, discovering unprecedented reactivities and producing fascinating opto-electronic materials are some of the most prominent directions of current organopnicogen research. Expanding the chemical toolbox towards the heavier group 15 elements will continue to create new opportunities to tailor molecular properties for small molecule activation/reactivity and materials applications alike. This frontier article illustrates the elemental substitution approach in selected literature examples.
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Affiliation(s)
- Joshua P Green
- Synthetic Molecular Chemistry, Department of Chemistry, Ångström Laboratory, Uppsala University, Uppsala, Sweden.
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Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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Ma YZ, Bestgen S, Gamer MT, Konchenko SN, Roesky PW. Polysulfid-Koordinationscluster der Lanthanoide. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707578] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ying-Zhao Ma
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie; Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Sebastian Bestgen
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie; Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Michael T. Gamer
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie; Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Sergey N. Konchenko
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie; Engesserstraße 15 76131 Karlsruhe Deutschland
- Nikolaev Institute of Inorganic Chemistry SB RAS; Prosp. Lavrentieva 3 630090 Novosibirsk Russland
- Novosibirsk State University; Pirogova str. 2 630090 Novosibirsk Russland
| | - Peter W. Roesky
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie; Engesserstraße 15 76131 Karlsruhe Deutschland
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Ma YZ, Bestgen S, Gamer MT, Konchenko SN, Roesky PW. Polysulfide Coordination Clusters of the Lanthanides. Angew Chem Int Ed Engl 2017; 56:13249-13252. [DOI: 10.1002/anie.201707578] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Ying-Zhao Ma
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 15 76131 Karlsruhe Germany
| | - Sebastian Bestgen
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 15 76131 Karlsruhe Germany
| | - Michael T. Gamer
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 15 76131 Karlsruhe Germany
| | - Sergey N. Konchenko
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 15 76131 Karlsruhe Germany
- Nikolaev Institute of Inorganic Chemistry SB RAS; Prosp. Lavrentieva 3 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova str. 2 630090 Novosibirsk Russia
| | - Peter W. Roesky
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology; Engesserstrasse 15 76131 Karlsruhe Germany
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Erickson KA, Kiplinger JL. Catalytic Dehydrogenation of Dimethylamine Borane by Highly Active Thorium and Uranium Metallocene Complexes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00967] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karla A. Erickson
- Chemistry Division, Mail
Stop J514, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Jaqueline L. Kiplinger
- Chemistry Division, Mail
Stop J514, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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Müller J, Heinl S, Schwarzmaier C, Balázs G, Keilwerth M, Meyer K, Scheer M. Umwandlung eines P4
-Butterfly-Komplexes - die Bildung eines homoleptischen Phosphor-Eisen-Sandwich-Komplexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Julian Müller
- Institut für Anorganische Chemie der Universität Regensburg; 93040 Regensburg Deutschland
| | - Sebastian Heinl
- Institut für Anorganische Chemie der Universität Regensburg; 93040 Regensburg Deutschland
| | - Christoph Schwarzmaier
- Institut für Anorganische Chemie der Universität Regensburg; 93040 Regensburg Deutschland
| | - Gábor Balázs
- Institut für Anorganische Chemie der Universität Regensburg; 93040 Regensburg Deutschland
| | - Martin Keilwerth
- Department Chemie und Pharmazie, Institut für Anorganische Chemie; Friedrich-Alexander Universität Erlangen-Nürnberg, FAU; Egerlandstraße 1 91058 Erlangen Deutschland
| | - Karsten Meyer
- Department Chemie und Pharmazie, Institut für Anorganische Chemie; Friedrich-Alexander Universität Erlangen-Nürnberg, FAU; Egerlandstraße 1 91058 Erlangen Deutschland
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg; 93040 Regensburg Deutschland
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Müller J, Heinl S, Schwarzmaier C, Balázs G, Keilwerth M, Meyer K, Scheer M. Rearrangement of a P 4 Butterfly Complex-The Formation of a Homoleptic Phosphorus-Iron Sandwich Complex. Angew Chem Int Ed Engl 2017; 56:7312-7317. [PMID: 28514101 DOI: 10.1002/anie.201703175] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Indexed: 11/05/2022]
Abstract
The versatile coordination behavior of the P4 butterfly complex [{Cp'''Fe(CO)2 }2 (μ,η1:1 -P4 )] (1, Cp'''=η5 -C5 H2t Bu3 ) towards different iron(II) compounds is presented. The reaction of 1 with [FeBr2 ⋅dme] (dme=dimethoxyethane) leads to the chelate complex [{Cp'''Fe(CO)2 }2 (μ3 ,η1:1:2 -P4 ){FeBr2 }] (2), whereas, in the reaction with [Fe(CH3 CN)6 ][PF6 ]2 , an unprecedented rearrangement of the P4 butterfly structural motif leads to the cyclo-P4 moiety in {(Cp'''Fe(CO)2 )2 (μ3 ,η1:1:4 -P4 )}2 Fe][PF6 ]2 (3). Complex 3 represents the first fully characterized "carbon-free" sandwich complex containing cyclo-P4 R2 ligands in a homoleptic-like iron-phosphorus-containing molecule. Alternatively, 2 can be transformed into 3 by halogen abstraction and subsequent coordination of 1. The additional isolated side products, [{Cp'''Fe(CO)2 }2 (μ3 ,η1:1:2 -P4 ){Cp'''Fe(CO)}][PF6 ] (4) and [{Cp'''Fe(CO)2 }2 (μ3 ,η1:1:4 -P4 ){Cp'''Fe}][PF6 ] (5), give insight into the stepwise activation of the P4 butterfly moiety in 1.
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Affiliation(s)
- Julian Müller
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Sebastian Heinl
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | | | - Gábor Balázs
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Martin Keilwerth
- Department Chemie und Pharmazie, Institut für Anorganische Chemie, Friedrich-Alexander University Erlangen-Nürnberg, FAU, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Karsten Meyer
- Department Chemie und Pharmazie, Institut für Anorganische Chemie, Friedrich-Alexander University Erlangen-Nürnberg, FAU, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
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