1
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Obey TJN, Singh MK, Canaj AB, Nichol GS, Brechin EK, Love JB. A Delocalized Mixed-Valence Dinuclear Ytterbium Complex That Displays Intervalence Charge Transfer. J Am Chem Soc 2024. [PMID: 39401076 DOI: 10.1021/jacs.4c12188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2024]
Abstract
The analysis of intervalence charge transfer (IVCT) in mixed-valence compounds can help understand electron transfer processes that are important in diverse applications such as molecular electronics and artificial photosynthesis. While mixed-valence complexes of the lanthanides are more difficult to access than their transition metal analogues, they have shown IVCT phenomena derived from Robin-Day Class II localized valency or even electronic transitions due to d-d metal-metal bonding. In contrast, we report here the synthesis, characterization, and computational analysis of a rare, Robin-Day Class III, singly reduced dinuclear Yb complex, which is best viewed as having delocalized oxidation states. In this case, no metal-metal bonding occurs and, for the first time, IVCT in a Robin-Day Class III complex resulting from f-f transitions is observed.
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Affiliation(s)
- Tom J N Obey
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
| | - Mukesh K Singh
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
| | - Angelos B Canaj
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
| | - Euan K Brechin
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
| | - Jason B Love
- EaStCHEM School of Chemistry, University of Edinburgh, EH9 3FJ, Edinburgh, United Kingdom
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2
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Singh RP, Mankad NP. Frustrated Al/M Heterobimetallic Complexes (M = Cr, Mo, W) That Exhibit Both Lewis and Radical Pair Behavior. Inorg Chem 2024; 63:18933-18944. [PMID: 39311419 DOI: 10.1021/acs.inorgchem.4c03276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
Exploration of new heterobinuclear Al/M combinations is relevant to contemporary strategies for cooperative bond activation. Here, we report the synthesis and characterization of six new Al/M heterobimetallic complexes (M = Cr, Mo, W) that exhibit end-on "isocarbonyl"-type Al─O═C═M bridges with metalloketene character rather than featuring Al─M─C≡O motifs with metal-metal bonding. The new compounds were characterized experimentally by nuclear magnetic resonance and infrared spectroscopies and theoretically using density functional theory, natural bond orbital, and quantum theory of atoms in molecules calculations. Factors influencing Al─O═C═M vs Al─M─C≡O isomerism were probed both experimentally and computationally. Crossover experiments between different group VI Al/M derivatives and regioselective epoxide ring opening indicate that the Al/M complexes act as masked frustrated Lewis pairs in solution under certain conditions. However, crossover experiments between group VI Al/M complexes and a previously studied Al-Fe complex, as well as computational modeling, imply that the same complexes can also reasonably act as masked frustrated radical pairs (FRPs). FRP reactivity with the group VI Al/M complexes was achieved under photochemical conditions, producing unsaturated metal-carbonyl dimers [(CpCr)2(CO)3]2- and [Mn2(CO)8]2-, which would otherwise be unstable under standard conditions but that are isolable here due to Al(III) coordination. The metal-metal bonding in these unsaturated metal-carbonyl dimers was also analyzed theoretically.
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Affiliation(s)
- Roushan Prakash Singh
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States
| | - Neal P Mankad
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States
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3
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Roy M, Gompa TP, Greer SM, Jiang N, Nassar LS, Steiner A, Bacsa J, Stein BW, La Pierre HS. Intervalence Charge Transfer in Nonbonding, Mixed-Valence, Homobimetallic Ytterbium Complexes. J Am Chem Soc 2024; 146:5560-5568. [PMID: 38373439 PMCID: PMC10910554 DOI: 10.1021/jacs.3c13906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/20/2024] [Accepted: 01/30/2024] [Indexed: 02/21/2024]
Abstract
There are several reports of compounds containing lanthanide ions in two different formal oxidation states; however, there are strikingly few examples of intervalence charge transfer (IVCT) transitions observed for these complexes, with those few occurrences limited to extended solids rather than molecular species. Herein, we report the synthesis, characterization, and computational analysis for a series of ytterbium complexes including a mixed-valence Yb25+ complex featuring a remarkably short Yb···Yb distance of 2.9507(8) Å. In contrast to recent reports of short Ln···Ln distances attributed to bonding through 5d orbitals, the formally Yb25+ complex presented here displays clear localization of Ln2+ and Ln3+ character and yet still displays an IVCT in the visible spectrum. These results demonstrate the ability to tune the electronic structure of formally mixed oxidation state lanthanide complexes: the high exchange stabilization of the Yb2+ 4f14 configuration disfavors the formation of a 5d1 bonding configuration, and the short metal-metal distance enforced by the ligand framework allows for the first observed lanthanide IVCT in a molecular system.
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Affiliation(s)
- Michael
D. Roy
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Thaige P. Gompa
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Samuel M. Greer
- Los
Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ningxin Jiang
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Lila S. Nassar
- School
of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United
States
| | - Alexander Steiner
- Department
of Chemistry, University of Liverpool, Liverpool L69 7Zd, United Kingdom
| | - John Bacsa
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Benjamin W. Stein
- Los
Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Henry S. La Pierre
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
- Nuclear
and Radiological Engineering Program, Georgia
Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
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4
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Guo Z, Wang J, Deacon GB, Junk PC. Selective Oxidation of a Single Metal Site of Divalent Calix[4]pyrrolide Compounds [Ln 2(N 4Et 8)(thf) 4] (Ln = Sm or Eu), Giving Mixed Valent Lanthanoid(II/III) Complexes. Inorg Chem 2022; 61:18678-18689. [DOI: 10.1021/acs.inorgchem.2c03172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhifang Guo
- College of Science & Engineering, James Cook University, Townsville 4811, Queensland, Australia
| | - Jun Wang
- College of Science & Engineering, James Cook University, Townsville 4811, Queensland, Australia
| | - Glen B. Deacon
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia
| | - Peter C. Junk
- College of Science & Engineering, James Cook University, Townsville 4811, Queensland, Australia
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5
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Ruppert H, Greb L. Calix[4]pyrrolato Stannate(II): A Tetraamido Tin(II) Dianion and Strong Metal-Centered σ-Donor. Angew Chem Int Ed Engl 2022; 61:e202116615. [PMID: 35019214 PMCID: PMC9306640 DOI: 10.1002/anie.202116615] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 01/07/2023]
Abstract
Anionic, metal-centered nucleophiles are emerging compounds with unique reactivities. Here, we describe the isolation and full characterization of the first tetraamido tin(II) dianion, its behavior as ligand towards transition metals, and its reactivity as a tin-centered nucleophile. Experimental values such as the Tolman electronic parameter (TEP) and computations attest tin-located σ-donor ability exceeding that of carbenes or electron-rich phosphines. Against transition metals, the stannate(II) can act as η1 - or η5 -type ligand. With aldehydes, it reacts by hydride substitution to give valuable acyl stannates. The reductive dehalogenation of iodobenzene indicates facile redox pathways mediated by halogen bond interaction. Calix[4]pyrrolato stannate(II) represents the first example of this macrocyclic ligand in low-valent p-block element chemistry.
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Affiliation(s)
- Heiko Ruppert
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Lutz Greb
- Department of Chemistry and Biochemistry - Inorganic ChemistryFreie Universität BerlinFabeckstr. 34/3614195BerlinGermany
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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6
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Reactivity of a Sterical Flexible Pentabenzylcyclopentadienyl Samarocene. INORGANICS 2022. [DOI: 10.3390/inorganics10020025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Reactivity studies of the classical divalent lanthanide compound [CpBz52Sm] (CpBz5 = pentabenzylcyclopentadienyl-anion) towards diphenyl dichalcogenides and d-element carbonyl complexes led to remarkable results. In the compounds obtained, a different number of Sm-C(phenyl) interactions and differently oriented benzyl groups were observed, suggesting—despite the preference of these interactions in [CpBz52Sm] described in previous studies—a flexible orientation of the benzyl groups and thus a variable steric shielding of the metal center by the ligand. The obtained compounds are either present as monometallic complexes (reduction of the dichalcogenides) or tetrametallic bridged compounds in the case of the d/f-element carbonyl complexes.
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7
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Ruppert H, Greb L. Calix[4]pyrrolato Stannate(II): A Tetraamido Tin(II) Dianion and Strong Metal‐Centered σ‐Donor. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Heiko Ruppert
- Ruprecht Karls Universität Heidelberg: Ruprecht Karls Universitat Heidelberg Anorganisch-Chemisches Institut GERMANY
| | - Lutz Greb
- Freie Universitat Berlin Institut für Chemie und Biochemie, Anorganische Chemie Institut für Anorganische ChemieFabeckstr. 34-36 14195 Berlin GERMANY
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8
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Ruppert H, Sigmund LM, Greb L. Calix[4]pyrroles as ligands: recent progress with a focus on the emerging p-block element chemistry. Chem Commun (Camb) 2021; 57:11751-11763. [PMID: 34661225 DOI: 10.1039/d1cc05120b] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Calix[4]pyrroles are readily synthesized in one step from pyrroles and ketones. For several decades, these macrocycles have been exploited as powerful anion receptors or ligands for transition and rare-earth metals. In contrast, calix[4]pyrrolates as ligands for p-block elements were established only in 2018. The present feature article reviews these developments, together with the recent progress on s-, d-, and f-block element complexes of the calix[4]pyrroles. Particular focus is given on the calix[4]pyrrolato aluminate and the corresponding silane, both featuring square planar-coordinated p-block elements in their highest oxidation states. These unique "anti-van't-Hoff-Le-Bel" structures introduce valuable characteristics into main-group element chemistry, such as agostic interactions or ligand-to-metal charge transfer absorptions. The most vital reactivities are highlighted, which rely on properties ranging from amphoterism, redox-activity, and a small HOMO-LUMO gap up to the ability to provide a platform for additional external stimuli. Overall, these developments underscore the beneficial impact of structural constraint of p-block elements and element-ligand cooperativity to enhance the functionality of the most abundant elements in their native oxidation states.
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Affiliation(s)
- Heiko Ruppert
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Lukas M Sigmund
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Lutz Greb
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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9
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Münzfeld L, Hauser A, Hädinger P, Weigend F, Roesky PW. The Archetypal Homoleptic Lanthanide Quadruple-Decker-Synthesis, Mechanistic Studies, and Quantum Chemical Investigations. Angew Chem Int Ed Engl 2021; 60:24493-24499. [PMID: 34486795 PMCID: PMC8596981 DOI: 10.1002/anie.202111227] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Indexed: 12/26/2022]
Abstract
Reduction of [SmIII (COT1,4-SiiPr3 )(BH4 )(thf)] (COT1,4-SiiPr3 =1,4-(i Pr3 Si)3 C8 H6 ) with KC8 resulted in [SmIII/II/III (COT1,4-SiiPr3 )4 ], the first example of a homoleptic lanthanide quadruple-decker. As indicated by an analysis of the bond metrics in the solid-state, the inner Sm ion is present in the divalent oxidation state, while the outer ones are trivalent. This observation could be confirmed by quantum chemical calculations. Mechanistic studies revealed not only insight into possible formation pathways of [SmIII/II/III (COT1,4-SiiPr3 )4 ] but also resulted in the transformation to other mixed metal sandwich complexes with unique structural properties. These are the 1D-polymeric chain structured [KSmIII (COT1,4-SiiPr3 )]n and the hexametallic species [(tol)K(COT1,4-SiiPr3 )SmII (COT1,4-SiiPr3 )K]2 which were initially envisioned as possible building blocks as part of different retrosynthetically guided pathways that we developed.
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Affiliation(s)
- Luca Münzfeld
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Adrian Hauser
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Pauline Hädinger
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Florian Weigend
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Peter W. Roesky
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
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10
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Münzfeld L, Hauser A, Hädinger P, Weigend F, Roesky PW. The Archetypal Homoleptic Lanthanide Quadruple‐Decker—Synthesis, Mechanistic Studies, and Quantum Chemical Investigations. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Luca Münzfeld
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Adrian Hauser
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Pauline Hädinger
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Florian Weigend
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Strasse 4 35032 Marburg Germany
| | - Peter W. Roesky
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
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11
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Yamauchi Y, Nagai S, Terada T, Hoshimoto Y, Ogoshi S. Sm(II)-mediated Single-electron Reduction of Pentafluorophenylcopper(I). CHEM LETT 2021. [DOI: 10.1246/cl.210202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasuhiro Yamauchi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shun Nagai
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tomoya Terada
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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12
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Ward RJ, Pividori D, Carpentier A, Tarlton ML, Kelley SP, Maron L, Meyer K, Walensky JR. Isolation of a [Fe(CO)4]2–-Bridged Diuranium Complex Obtained via Reduction of Fe(CO)5 with Uranium(III). Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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
| | - Daniel Pividori
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Inorganic Chemistry, Egerlandstr. 1, 91058 Erlangen, Germany
| | - Ambre Carpentier
- Université de Toulouse and CNRS, INSA, UPS, CNRS, UMR 5215, LPCNO, Toulouse 31077, France
| | - Michael L. Tarlton
- 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
| | - Laurent Maron
- Université de Toulouse and CNRS, INSA, UPS, CNRS, UMR 5215, LPCNO, Toulouse 31077, France
| | - Karsten Meyer
- Friedrich-Alexander-University of Erlangen-Nürnberg (FAU), Inorganic Chemistry, Egerlandstr. 1, 91058 Erlangen, Germany
| | - Justin R. Walensky
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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13
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Mukthar NFM, Schley ND, Ung G. Alkali-metal- and halide-free dinuclear mixed-valent samarium and europium complexes. Dalton Trans 2020; 49:16059-16061. [PMID: 32292977 DOI: 10.1039/d0dt01095b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the synthesis of mixed-valent (Ln(ii)/Ln(iii)) dilanthanide complexes supported by a calix[4]pyrrole ligand. The complexes are obtained by one-electron reduction of Ln(iii)/Ln(iii) complexes and are alkali-metal- and halide-free. The complexes are designed to activate small molecules by taking advantage of both the base and the one-electron reductant contained in their structure. We demonstrate a proof-of-principle concept of this mechanism by activating water and silanol.
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Affiliation(s)
- Nishya F M Mukthar
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
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14
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Ostrowski JPA, Atkinson BE, Doyle LR, Wooles AJ, Kaltsoyannis N, Liddle ST. The ditungsten decacarbonyl dianion. Dalton Trans 2020; 49:9330-9335. [PMID: 32582890 DOI: 10.1039/d0dt01921f] [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 report the synthesis and structural authentication of the ditungsten decarbonyl dianion in [(OC)5W-W(CO)5][K(18-crown-6)(THF)2]2 (1), completing the group 6 dianion triad over half a century since the area began. The W-W bond is long [3.2419(8) Å] and, surprisingly, in the solid-state the dianion adopts a D4h eclipsed rather than D4d staggered geometry, the latter of which dominates the structural chemistry of binary homobimetallic carbonyls. Computational studies at levels of theory from DFT to CCSD(T) confirm that the D4d geometry is energetically preferred in the gas-phase, being ∼18 kJ mol-1 more stable than the D4h form, since slight destabilisation of the degenerate W-CO π 5dxz and 5dyz orbitals is outweighed by greater stabilisation of the W-W σ-bond orbital. The gas-phase D4h structure displays a single imaginary vibrational mode, intrinsic reaction coordinate analysis of which links the D4h isomer directly to the D4d forms, which are produced by rotation around the W-W bond by ±45°. It is therefore concluded that the gas-phase transition state becomes a minimum on the potential energy surface when subjected to crystal packing in the solid-state.
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Affiliation(s)
- Joseph P A Ostrowski
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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15
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Willauer AR, Dabrowska AM, Scopelliti R, Mazzanti M. Structure and small molecule activation reactivity of a metallasilsesquioxane of divalent ytterbium. Chem Commun (Camb) 2020; 56:8936-8939. [DOI: 10.1039/d0cc04197a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first metallasilsesquioxane of a divalent lanthanide was synthetized and structurally characterized. The dinuclear Yb(ii) complex effects the two electrons reduction of azobenzene, and the selective CO2 reduction to CO and carbonate.
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Affiliation(s)
- Aurélien R. Willauer
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Anna M. Dabrowska
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
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16
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Yadav R, Hossain ME, Peedika Paramban R, Simler T, Schoo C, Wang J, Deacon GB, Junk PC, Roesky PW. 3d–4f heterometallic complexes by the reduction of transition metal carbonyls with bulky LnII amidinates. Dalton Trans 2020; 49:7701-7707. [DOI: 10.1039/d0dt01271h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Heterometallic lanthanide-transition metal carbonyl complexes [Sm2–Co2], [Yb–Co], and [Sm2–Fe3] have been synthesized by redox reactions between bulky amidinate stabilized divalent Ln and TM carbonyl complexes.
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Affiliation(s)
- Ravi Yadav
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Md Elius Hossain
- College of Science and Engineering
- James Cook University
- Townsville
- Australia
| | | | - Thomas Simler
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Christoph Schoo
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Jun Wang
- College of Science and Engineering
- James Cook University
- Townsville
- Australia
| | | | - Peter C. Junk
- College of Science and Engineering
- James Cook University
- Townsville
- Australia
| | - Peter W. Roesky
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
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17
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Yadav R, Simler T, Gamer MT, Köppe R, Roesky PW. Rhenium is different: CO tetramerization induced by a divalent lanthanide complex in rhenium carbonyls. Chem Commun (Camb) 2019; 55:5765-5768. [DOI: 10.1039/c9cc02350j] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of M2(CO)10 (M = Mn, Re) with different divalent lanthanide (Ln = Sm, Yb) compounds was investigated.
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Affiliation(s)
- Ravi Yadav
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Thomas Simler
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Michael T. Gamer
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
| | - Peter W. Roesky
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
- Germany
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18
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Kulyukhin SA. Physicochemical Properties of Bivalent f Elements in the Gas Phase, Solid Matrices, Melts, and Solutions. RADIOCHEMISTRY 2018. [DOI: 10.1134/s1066362218050016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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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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Kelly RP, Maron L, Scopelliti R, Mazzanti M. Reduction of a Cerium(III) Siloxide Complex To Afford a Quadruple-Decker Arene-Bridged Cerium(II) Sandwich. Angew Chem Int Ed Engl 2017; 56:15663-15666. [PMID: 29034561 DOI: 10.1002/anie.201709769] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 12/30/2022]
Abstract
Organometallic multi-decker sandwich complexes containing f-elements remain rare, despite their attractive magnetic and electronic properties. The reduction of the CeIII siloxide complex, [KCeL4 ] (1; L=OSi(OtBu)3 ), with excess potassium in a THF/toluene mixture afforded a quadruple-decker arene-bridged complex, [K(2.2.2-crypt)]2 [{(KL3 Ce)(μ-η6 :η6 -C7 H8 )}2 Ce] (3). The structure of 3 features a [Ce(C7 H8 )2 ] sandwich capped by [KL3 Ce] moieties with a linear arrangement of the Ce ions. Structural parameters, UV/Vis/NIR data, and DFT studies indicate the presence of CeII ions involved in δ bonding between the Ce cations and toluene dianions. Complex 3 is a rare lanthanide multi-decker complex and the first containing non-classical divalent lanthanide ions. Moreover, oxidation of 1 by AgOTf (OTf=O3 SCF3 ) yielded the CeIV complex, [CeL4 ] (2), showing that siloxide ligands can stabilize Ce in three oxidation states.
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Affiliation(s)
- Rory P Kelly
- Institut des Sciences et Ingénierie Chimiques, Ecole 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
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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Kelly RP, Maron L, Scopelliti R, Mazzanti M. Reduction of a Cerium(III) Siloxide Complex To Afford a Quadruple-Decker Arene-Bridged Cerium(II) Sandwich. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709769] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rory P. Kelly
- Institut des Sciences et Ingénierie Chimiques; Ecole 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
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
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