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Kameo H, Sakaki S, Ohki Y, Uehara N, Kosukegawa T, Suzuki H, Takao T. Four-Electron Reduction of Dioxygen on a Metal Surface: Models of Dissociative and Associative Mechanisms in a Homogeneous System. Inorg Chem 2021; 60:1550-1560. [PMID: 33241691 DOI: 10.1021/acs.inorgchem.0c02936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two different four-electron reductions of dioxygen (O2) on a metal surface are reproduced in homogeneous systems. The reaction of the highly unsaturated (56-electron) tetraruthenium tetrahydride complex 1 with O2 readily afforded the bis(μ3-oxo) complex 3 via a dissociative mechanism that includes large electronic and geometric changes, i.e., a four-electron oxidation of the metal centers and an increase of 8 in the number of valence electrons. In contrast, the tetraruthenium hexahydride complex 2 induces a smooth H-atom transfer to the incorporated O2 species, and the O-OH bond is cleaved to afford the mono(μ3-oxo) complex 4 via an associative mechanism. Density functional theory calculations suggest that the higher degree of unsaturation in the tetrahydride system induces a significant interaction between the tetraruthenium core and the O2 moiety, enabling the large changes required for the dissociative mechanism.
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Affiliation(s)
- Hajime Kameo
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan.,Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Gakuen-cho 1-1, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Shigeyoshi Sakaki
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-nishihiraki-cho 34-4, Sakyo-ku, Kyoto 606-8103, Japan
| | - Yasuhiro Ohki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan
| | - Naoki Uehara
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan
| | - Takuya Kosukegawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan
| | - Hiroharu Suzuki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan
| | - Toshiro Takao
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama 2-12-1, Meguro-ku, Tokyo152-8552, Japan
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2
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Castillo CE, Algarra AG. The Mechanism of the Intramolecular Hydrocarbyl Metathesis within a Planar Triruthenium Cluster: Combining Core Flexibility with Hydride Mobility. Chemistry 2020; 26:13880-13889. [PMID: 32476172 DOI: 10.1002/chem.202001539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Indexed: 11/12/2022]
Abstract
The transition metal catalysed formation and cleavage of C-C bonds is of utmost importance in synthetic chemistry. While most of the existing homogeneous catalysts are mononuclear, knowledge of the behaviour of polynuclear species is much more limited. By using computational methods, here we shed light into the mechanistic details of the thermally-induced isomerization of Cp*3 Ru3 (μ-H)2 (μ3 -η2 -pentyne)(μ3 -pentylidyne) (2) into Cp*3 Ru3 (μ-H)2 (μ3 -η2 -octyne)(μ3 -ethylidyne) (3), a process that involves the migration of a C3 fragment between the hydrocarbyl ligands and across the plane formed by the three Ru centres. Our results show this to be a complex transformation that comprises of five individual rearrangements in an A→B→A→B→A order. Each so-called rearrangement A consists of the CH migration from the μ3 -η2 -alkyne into the μ3 -alkylidine ligand in the other side of the Ru3 plane. This process is facilitated by the cluster's ability to adopt open-core structures in which one Ru-Ru bond is broken and a new C-C bond is formed. In contrast, rearrangements B do not involve the formation or cleavage of C-C bonds, nor do they require the opening of the cluster core. Instead, they consist of the isomerization of the μ3 -η2 -alkyne and μ3 -alkylidyne ligands on each side of the triruthenium plane into μ3 -alkylidyne and μ3 -η2 -alkyne, respectively. Such transformation implies the migration of three H atoms within the hydrocarbyl ligands, and in this case, it is aided by the cluster's ability to behave as a H reservoir. All in all, this study highlights the plasticity of these Ru3 clusters, whereby Ru-Ru, Ru-C, Ru-H, C-C, and C-H bonds are formed and broken with surprising ease.
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Affiliation(s)
- Carmen E Castillo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y, Química Inorgánica, Instituto de Biomoléculas (INBIO), Facultad de Ciencias, Universidad de Cádiz, Apartado 40, 11510, Puerto Real, Cádiz, Spain
| | - Andrés G Algarra
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y, Química Inorgánica, Instituto de Biomoléculas (INBIO), Facultad de Ciencias, Universidad de Cádiz, Apartado 40, 11510, Puerto Real, Cádiz, Spain
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3
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Sharninghausen LS, Mercado BQ, Hoffmann C, Wang X, Campos J, Crabtree RH, Balcells D. The neutron diffraction structure of [Ir4(IMe)8H10]2+ polyhydride cluster: Testing the computational hydride positional assignments. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Dutta I, De S, Yadav S, Mondol R, Bera JK. Aerobic oxidative coupling of alcohols and amines towards imine formation by a dicopper(I,I) catalyst. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Reactivity and Catalysis at Sites Trans to the [Ru–Ru] Bond. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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6
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Sharninghausen LS, Mercado BQ, Crabtree RH, Balcells D, Campos J. Gel-assisted crystallization of [Ir4(IMe)7(CO)H10]2+ and [Ir4(IMe)8H9]3+ clusters derived from catalytic glycerol dehydrogenation. Dalton Trans 2015; 44:18403-10. [DOI: 10.1039/c5dt03302k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two unique Ir4 clusters isolated during catalytic glycerol dehydrogenation, crystallized using aqueous and organic gel matrices and displaying remarkable structural features are described.
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Affiliation(s)
| | | | | | - David Balcells
- The Centre for Theoretical and Computational Chemistry (CTCC)
- Department of Chemistry, University of Oslo
- N-0315 Oslo
- Norway
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7
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Campos J, Sharninghausen LS, Crabtree RH, Balcells D. A Carbene-Rich but Carbonyl-Poor [Ir6(IMe)8(CO)2H14]2+Polyhydride Cluster as a Deactivation Product from Catalytic Glycerol Dehydrogenation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407997] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Campos J, Sharninghausen LS, Crabtree RH, Balcells D. A Carbene-Rich but Carbonyl-Poor [Ir6(IMe)8(CO)2H14]2+Polyhydride Cluster as a Deactivation Product from Catalytic Glycerol Dehydrogenation. Angew Chem Int Ed Engl 2014; 53:12808-11. [DOI: 10.1002/anie.201407997] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Indexed: 11/08/2022]
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9
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Sarkar M, Doucet H, Bera JK. Room temperature C-H bond activation on a [Pd(I)-Pd(I)] platform. Chem Commun (Camb) 2014; 49:9764-6. [PMID: 24030737 DOI: 10.1039/c3cc44493g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroatom assisted C-H bond activation of 2-substituted naphthyridines with solvated Pd(I)2(CH3CN)6(BF4)2 provides bi- and trinuclear Pd(II) cyclometalated complexes, which provide valuable insight into potential intermediates in palladium catalyzed direct arylation reactions.
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Affiliation(s)
- Mithun Sarkar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
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Beck R, Johnson SA. Dinuclear Ni(I)—Ni(I) Complexes with Syn-Facial Bridging Ligands from Ni(I) Precursors or Ni(II)/Ni(0) Comproportionation. Organometallics 2013. [DOI: 10.1021/om4001633] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Beck
- Department of Chemistry
and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
| | - Samuel A. Johnson
- Department of Chemistry
and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
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Sinha A, Majumdar M, Sarkar M, Ghatak T, Bera JK. Understanding C–H Bond Activation on a Diruthenium(I) Platform. Organometallics 2013. [DOI: 10.1021/om301228h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Arup Sinha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Moumita Majumdar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Mithun Sarkar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Tapas Ghatak
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jitendra K. Bera
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Suzuki H, Shimogawa R, Muroi Y, Takao T, Oshima M, Konishi GI. Bimetallic Activation of 2-Alkanones through Photo-Induced α-Hydrogen Abstraction Mediated by a Dinuclear Ruthenium Tetrahydride Complex. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Suzuki H, Shimogawa R, Muroi Y, Takao T, Oshima M, Konishi GI. Bimetallic Activation of 2-Alkanones through Photo-Induced α-Hydrogen Abstraction Mediated by a Dinuclear Ruthenium Tetrahydride Complex. Angew Chem Int Ed Engl 2013; 52:1773-6. [DOI: 10.1002/anie.201208185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Indexed: 11/09/2022]
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14
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Plois M, Hujo W, Grimme S, Schwickert C, Bill E, de Bruin B, Pöttgen R, Wolf R. Offenschalige Polyhydridokomplexe von 3d-Metallionen mit demfac-[RuH3(PR3)3]−-Baustein. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205209] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Plois M, Hujo W, Grimme S, Schwickert C, Bill E, de Bruin B, Pöttgen R, Wolf R. Open-Shell First-Row Transition-Metal Polyhydride Complexes Based on thefac-[RuH3(PR3)3]−Building Block. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201205209] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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