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Roland CD, VenkatRamani S, Jakhar VK, Ghiviriga I, Abboud KA, Veige AS. Synthesis and Characterization of a Molybdenum Alkylidyne Supported by a Trianionic OCO3– Pincer Ligand. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00677] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher D. Roland
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Sudarsan VenkatRamani
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Vineet K. Jakhar
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Khalil A. Abboud
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Adam S. Veige
- Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
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2
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Apps SL, White AJP, Miller PW, Long NJ. Synthesis and reactivity of an N-triphos Mo(0) dinitrogen complex. Dalton Trans 2018; 47:11386-11396. [PMID: 30062342 DOI: 10.1039/c8dt02471e] [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 preparation and reactivity of a novel molybdenum dinitrogen complex supported by a nitrogen-centred tripodal phosphine ligand (N-triphos, N(CH2PPh2)3, NP3Ph) are reported. Reaction of N-triphos with [MoX3(THF)3] (X = Cl, Br, I) gave the Mo(iii) complex [MoX3(κ2-NP3Ph)(THF)] (1), where bidentate N-triphos coordination was observed. Reduction of this complex in the presence of dppm (bis(diphenylphosphino)methane) gave the dinitrogen complex [Mo(N2)(dppm)(κ3-NP3Ph)] (2), which exhibits moderate dinitrogen activation. An additional hydride complex, [Mo(H)2(dppm)(κ3-NP3Ph)] (4), was produced either as a minor side product during the reduction step, or as a major product by direct hydrogenation of the dinitrogen complex 2. The reactivity of the dinitrogen complex 2 with a range of Lewis acids was also investigated. At low temperatures, protic or borane Lewis acids (H+, BBr3 and tris(pentafluorophenyl)borane (BCF)) were found to coordinate to the apical nitrogen atom of the N-triphos ligand, with no conclusive evidence of any functionalisation of the dinitrogen ligand. Alkali metal Lewis acid addition to 2 resulted in the unexpected rearrangement of the N-triphos ligand to form [Mo(dppm)(PMePh2)(PCP)][B(C6F5)4] (7), where PCP, [Ph2PCNHCH2PPh2] is the carbenic ligand formed upon rearrangement from the reaction of 2 with M[B(C6F5)4] (M = Li, Na or K). Single crystal X-ray diffraction of complexes 1, 2, 4 and 7 provided structural confirmation of the N-triphos molybdenum complexes described.
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Affiliation(s)
- Samantha L Apps
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.
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3
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Gardner BM, Kefalidis CE, Lu E, Patel D, McInnes EJL, Tuna F, Wooles AJ, Maron L, Liddle ST. Evidence for single metal two electron oxidative addition and reductive elimination at uranium. Nat Commun 2017; 8:1898. [PMID: 29196691 PMCID: PMC5711956 DOI: 10.1038/s41467-017-01363-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/11/2017] [Indexed: 11/18/2022] Open
Abstract
Reversible single-metal two-electron oxidative addition and reductive elimination are common fundamental reactions for transition metals that underpin major catalytic transformations. However, these reactions have never been observed together in the f-block because these metals exhibit irreversible one- or multi-electron oxidation or reduction reactions. Here we report that azobenzene oxidises sterically and electronically unsaturated uranium(III) complexes to afford a uranium(V)-imido complex in a reaction that satisfies all criteria of a single-metal two-electron oxidative addition. Thermolysis of this complex promotes extrusion of azobenzene, where H-/D-isotopic labelling finds no isotopomer cross-over and the non-reactivity of a nitrene-trap suggests that nitrenes are not generated and thus a reductive elimination has occurred. Though not optimally balanced in this case, this work presents evidence that classical d-block redox chemistry can be performed reversibly by f-block metals, and that uranium can thus mimic elementary transition metal reactivity, which may lead to the discovery of new f-block catalysis. The reactivity of f-block complexes is primarily defined by single-electron oxidations and σ-bond metathesis. Here, Liddle and co-workers provide evidence that a uranium complex can undergo reversible oxidative addition and reductive elimination, demonstrating transition metal-like reactivity within f-block chemistry.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Christos E Kefalidis
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, Toulouse, 31077, France
| | - Erli Lu
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Dipti Patel
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Eric J L McInnes
- EPSRC National UK EPR Facility, School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Floriana Tuna
- EPSRC National UK EPR Facility, School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ashley J Wooles
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, Toulouse, 31077, France.
| | - Stephen T Liddle
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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Mills DP, Lewis W, Blake AJ, Liddle ST. Reactivity Studies of a T-Shaped Yttrium Carbene: C–F and C–O Bond Activation and C═C Bond Formation Promoted by [Y(BIPM)(I)(THF)2] (BIPM = C(PPh2NSiMe3)2). Organometallics 2013. [DOI: 10.1021/om301016j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham
NG7 2RD, U.K
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5
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Jamison GM, Wheeler DR, Loy DA, Ziller JW. Double Phosphaalkyne Insertion to a Tungsten Alkylidene: Formation of a Diphosphametallabicyclobutane. Organometallics 2005. [DOI: 10.1021/om050150o] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory M. Jamison
- Chemical Synthesis and Nanomaterials Department and Micro-Total Analytical Systems Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0888, Polymers and Coatings Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87154, and Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025
| | - David R. Wheeler
- Chemical Synthesis and Nanomaterials Department and Micro-Total Analytical Systems Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0888, Polymers and Coatings Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87154, and Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025
| | - Douglas A. Loy
- Chemical Synthesis and Nanomaterials Department and Micro-Total Analytical Systems Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0888, Polymers and Coatings Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87154, and Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025
| | - Joseph W. Ziller
- Chemical Synthesis and Nanomaterials Department and Micro-Total Analytical Systems Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0888, Polymers and Coatings Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87154, and Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025
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6
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Affiliation(s)
- Richard R Schrock
- Department of Chemistry 6-331, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
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Bedford RB, Hill AF, Wilton-Ely JDET, Francis MD, Jones C. A σ-Phosphaalkyne Complex of Ruthenium(0). Inorg Chem 1997. [DOI: 10.1021/ic961383y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robin B. Bedford
- Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, U.K. SW7 2AY, and University of Wales, Singleton Park, Swansea, U.K. SA2 8PP
| | - Anthony F. Hill
- Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, U.K. SW7 2AY, and University of Wales, Singleton Park, Swansea, U.K. SA2 8PP
| | - James D. E. T. Wilton-Ely
- Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, U.K. SW7 2AY, and University of Wales, Singleton Park, Swansea, U.K. SA2 8PP
| | - Matthew D. Francis
- Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, U.K. SW7 2AY, and University of Wales, Singleton Park, Swansea, U.K. SA2 8PP
| | - Cameron Jones
- Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London, U.K. SW7 2AY, and University of Wales, Singleton Park, Swansea, U.K. SA2 8PP
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Jamison GM, Saunders RS, Wheeler DR, Alam TM, McClain MD, Loy DA, Ziller JW. Isolation and Characterization of the Molybdenum Alkylidyne Complex [(F3C)Me2CO]2Mo(C-t-Bu)[N(Ar)PC(H)(CMe2Ph)] and Its Conversion to a Phosphamolybdacyclobutene. Organometallics 1996. [DOI: 10.1021/om960418z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gregory M. Jamison
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - Randall S. Saunders
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - David R. Wheeler
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - Todd M. Alam
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - Mark D. McClain
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - Douglas A. Loy
- Sandia National Laboratories, Properties of Organic Materials, Organization 1812, MS 1407, P.O. Box 5800, Albuquerque, New Mexico 87185-1407
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, Irvine, California 92717-2025
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