1
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McKay AI, Barwick‐Silk J, Savage M, Willis MC, Weller AS. Synthesis of Highly Fluorinated Arene Complexes of [Rh(Chelating Phosphine)] + Cations, and their use in Synthesis and Catalysis. Chemistry 2020; 26:2883-2889. [PMID: 31749160 PMCID: PMC7078928 DOI: 10.1002/chem.201904668] [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: 10/12/2019] [Revised: 11/19/2019] [Indexed: 11/17/2022]
Abstract
The synthesis of rhodium complexes with weakly binding highly fluorinated benzene ligands is described: 1,2,3-F3 C6 H3 , 1,2,3,4-F4 C6 H2 and 1,2,3,4,5-F5 C6 H are shown to bind with cationic [Rh(Cy2 P(CH2 )x PCy2 )]+ fragments (x=1, 2). Their structures and reactivity with alkenes, and use in catalysis for promoting the Tishchenko reaction of a simple aldehyde, are demonstrated. Key to the synthesis of these complexes is the highly concentrated reaction conditions and use of the [Al{OC(CF3 )3 }4 ]- anion.
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Affiliation(s)
- Alasdair I. McKay
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - James Barwick‐Silk
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Max Savage
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Michael C. Willis
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Andrew S. Weller
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
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2
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Two octahedral σ-borane metal (MnI and RuII) complexes containing a tripod κ3N,H,H-ligand: Synthesis, structural characterization, and theoretical topological study of the charge density. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127217] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Gorgas N, Stöger B, Veiros LF, Kirchner K. Access to Fe
II
Bis(σ‐B−H) Aminoborane Complexes through Protonation of a Borohydride Complex and Dehydrogenation of Amine‐Boranes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nikolaus Gorgas
- Institute of Applied Synthetic ChemistryVienna University of Technology Getreidemarkt 9/163-AC 1060 Wien Austria
| | - Berthold Stöger
- X-Ray CenterVienna University of Technology Getreidemarkt 9 A-1060 Wien Austria
| | - Luis F. Veiros
- Centro de Química EstruturalInstituto Superior TécnicoUniversidade de Lisboa Av. Rovisco Pais No. 1 1049-001 Lisboa Portugal
| | - Karl Kirchner
- Institute of Applied Synthetic ChemistryVienna University of Technology Getreidemarkt 9/163-AC 1060 Wien Austria
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4
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Gorgas N, Stöger B, Veiros LF, Kirchner K. Access to Fe
II
Bis(σ‐B−H) Aminoborane Complexes through Protonation of a Borohydride Complex and Dehydrogenation of Amine‐Boranes. Angew Chem Int Ed Engl 2019; 58:13874-13879. [DOI: 10.1002/anie.201906971] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/30/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Nikolaus Gorgas
- Institute of Applied Synthetic ChemistryVienna University of Technology Getreidemarkt 9/163-AC 1060 Wien Austria
| | - Berthold Stöger
- X-Ray CenterVienna University of Technology Getreidemarkt 9 A-1060 Wien Austria
| | - Luis F. Veiros
- Centro de Química EstruturalInstituto Superior TécnicoUniversidade de Lisboa Av. Rovisco Pais No. 1 1049-001 Lisboa Portugal
| | - Karl Kirchner
- Institute of Applied Synthetic ChemistryVienna University of Technology Getreidemarkt 9/163-AC 1060 Wien Austria
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5
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Han D, Anke F, Trose M, Beweries T. Recent advances in transition metal catalysed dehydropolymerisation of amine boranes and phosphine boranes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Iannetelli A, Tizzard G, Coles SJ, Owen GR. Sequential Migrations between Boron and Rhodium Centers: A Cooperative Process between Rhodium and a Monosubstituted Borohydride Unit. Inorg Chem 2017; 57:446-456. [DOI: 10.1021/acs.inorgchem.7b02700] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angelo Iannetelli
- School of Applied
Science, University of South Wales, Treforest CF37 4AT, United Kingdom
| | - Graham Tizzard
- National Crystallography Service, School
of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Simon J. Coles
- National Crystallography Service, School
of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Gareth R. Owen
- School of Applied
Science, University of South Wales, Treforest CF37 4AT, United Kingdom
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7
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Colebatch AL, McKay AI, Beattie NA, Macgregor SA, Weller AS. Fluoroarene Complexes with Small Bite Angle Bisphosphines: Routes to Amine-Borane and Aminoborylene Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700600] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Annie L. Colebatch
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road OX1 3TA Oxford UK
| | - Alasdair I. McKay
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road OX1 3TA Oxford UK
| | - Nicholas A. Beattie
- Institute of Chemical Sciences; Heriot Watt University; EH14 4AS Edinburgh UK
| | - Stuart A. Macgregor
- Institute of Chemical Sciences; Heriot Watt University; EH14 4AS Edinburgh UK
| | - Andrew S. Weller
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road OX1 3TA Oxford UK
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8
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Pike SD, Crimmin MR, Chaplin AB. Organometallic chemistry using partially fluorinated benzenes. Chem Commun (Camb) 2017; 53:3615-3633. [DOI: 10.1039/c6cc09575e] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorobenzenes, in particular fluorobenzene (FB) and 1,2-difluorobenzene (1,2-DiFB), are versatile solvents for conducting organometallic chemistry and transition-metal-based catalysis.
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Affiliation(s)
| | - Mark R. Crimmin
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
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9
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Mansell SM. Catalytic applications of small bite-angle diphosphorus ligands with single-atom linkers. Dalton Trans 2017; 46:15157-15174. [DOI: 10.1039/c7dt03395h] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Diphosphorus ligands connected by a single atom (R2PEPR2; E = CR2, CCR2and NR) give chelating ligands with very small bite-angles as well as enable access to other properties such as bridging modes and hemilability. ThisPerspectivereviews the properties of diphosphorus ligands featuring a single-atom linker and their applications in catalysis, including transformations of alkenes and transfer hydrogenation and hydrogen-borrowing reactions.
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Affiliation(s)
- S. M. Mansell
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
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10
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Brugos J, Cabeza JA, García-Álvarez P, Pérez-Carreño E, Van der Maelen JF. Octahedral manganese(i) and ruthenium(ii) complexes containing 2-(methylamido)pyridine–borane as a tripod κ3N,H,H-ligand. Dalton Trans 2017; 46:4009-4017. [DOI: 10.1039/c7dt00378a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The borane adduct of the 2-(methylamido)pyridine anion has been incorporated into octahedral metal (Mn, Ru) complexes and their bonding has been studied by theoretical methods (DFT, QTAIM).
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Affiliation(s)
- Javier Brugos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica-IUQOEM
- Universidad de Oviedo-CSIC
- 33071 Oviedo
- Spain
| | - Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica-IUQOEM
- Universidad de Oviedo-CSIC
- 33071 Oviedo
- Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica-IUQOEM
- Universidad de Oviedo-CSIC
- 33071 Oviedo
- Spain
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11
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Metters OJ, Flynn SR, Dowds CK, Sparkes HA, Manners I, Wass DF. Catalytic Dehydrocoupling of Amine–Boranes using Cationic Zirconium(IV)–Phosphine Frustrated Lewis Pairs. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02211] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Owen J. Metters
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Stephanie R. Flynn
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Christiana K. Dowds
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Hazel A. Sparkes
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Ian Manners
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Duncan F. Wass
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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12
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Brugos J, Cabeza JA, García-Álvarez P, Kennedy AR, Pérez-Carreño E, Van der Maelen JF. 2-(Methylamido)pyridine–Borane: A Tripod κ3-N,H,H Ligand in Trigonal Bipyramidal Rhodium(I) and Iridium(I) Complexes with an Asymmetric Coordination of Its BH3 Group. Inorg Chem 2016; 55:8905-12. [DOI: 10.1021/acs.inorgchem.6b01427] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javier Brugos
- Departamento de Química Orgánica e Inorgánica-IUQOEM,
Centro de Innovación en Química Avanzada ORFEO-CINQA, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Javier A. Cabeza
- Departamento de Química Orgánica e Inorgánica-IUQOEM,
Centro de Innovación en Química Avanzada ORFEO-CINQA, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Departamento de Química Orgánica e Inorgánica-IUQOEM,
Centro de Innovación en Química Avanzada ORFEO-CINQA, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Alan R. Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, U. K
| | - Enrique Pérez-Carreño
- Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Juan F. Van der Maelen
- Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
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13
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Rossin A, Peruzzini M. Ammonia–Borane and Amine–Borane Dehydrogenation Mediated by Complex Metal Hydrides. Chem Rev 2016; 116:8848-72. [DOI: 10.1021/acs.chemrev.6b00043] [Citation(s) in RCA: 305] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrea Rossin
- Institute of Chemistry of
Organometallic Compounds, ICCOM-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Maurizio Peruzzini
- Institute of Chemistry of
Organometallic Compounds, ICCOM-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
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14
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Kumar A, Ishibashi JSA, Hooper TN, Mikulas TC, Dixon DA, Liu SY, Weller AS. The Synthesis, Characterization and Dehydrogenation of Sigma-Complexes of BN-Cyclohexanes. Chemistry 2016; 22:310-22. [PMID: 26602704 PMCID: PMC4818983 DOI: 10.1002/chem.201502986] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Indexed: 11/11/2022]
Abstract
The coordination chemistry of the 1,2-BN-cyclohexanes 2,2-R2 -1,2-B,N-C4 H10 (R2 =HH, MeH, Me2 ) with Ir and Rh metal fragments has been studied. This led to the solution (NMR spectroscopy) and solid-state (X-ray diffraction) characterization of [Ir(PCy3 )2 (H)2 (η(2) η(2) -H2 BNR2 C4 H8 )][BAr(F) 4 ] (NR2 =NH2 , NMeH) and [Rh(iPr2 PCH2 CH2 CH2 PiPr2 )(η(2) η(2) -H2 BNR2 C4 H8 )][BAr(F) 4 ] (NR2 =NH2 , NMeH, NMe2 ). For NR2 =NH2 subsequent metal-promoted, dehydrocoupling shows the eventual formation of the cyclic tricyclic borazine [BNC4 H8 ]3 , via amino-borane and, tentatively characterized using DFT/GIAO chemical shift calculations, cycloborazane intermediates. For NR2 =NMeH the final product is the cyclic amino-borane HBNMeC4 H8 . The mechanism of dehydrogenation of 2,2-H,Me-1,2-B,N-C4 H10 using the {Rh(iPr2 PCH2 CH2 CH2 PiPr2 )}(+) catalyst has been probed. Catalytic experiments indicate the rapid formation of a dimeric species, [Rh2 (iPr2 PCH2 CH2 CH2 PiPr2 )2 H5 ][BAr(F) 4 ]. Using the initial rate method starting from this dimer, a first-order relationship to [amine-borane], but half-order to [Rh] is established, which is suggested to be due to a rapid dimer-monomer equilibrium operating.
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Affiliation(s)
- Amit Kumar
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Jacob S A Ishibashi
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts, 02467-3860 (USA)
| | - Thomas N Hooper
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Tanya C Mikulas
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336 (USA)
| | - David A Dixon
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336 (USA)
| | - Shih-Yuan Liu
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts, 02467-3860 (USA).
| | - Andrew S Weller
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA (UK).
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15
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Kumar A, Priest IK, Hooper TN, Weller AS. Variable coordination modes and catalytic dehydrogenation of B-phenyl amine–boranes. Dalton Trans 2016; 45:6183-95. [DOI: 10.1039/c6dt00197a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The binding mode ofB-aryl substituted amine–boranes at {Rh(bisphoshine)}+fragments can manipulated by variation of the P–Rh–P bite-angle.
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Affiliation(s)
- Amit Kumar
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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16
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Riddlestone IM, Abdalla JA, Aldridge S. Coordination and Activation of EH Bonds (E=B, Al, Ga) at Transition Metal Centers. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2015. [DOI: 10.1016/bs.adomc.2015.02.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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17
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Nako AE, White AJP, Crimmin MR. Bis(σ-B–H) complexes of copper(i): precursors to a heterogeneous amine–borane dehydrogenation catalyst. Dalton Trans 2015; 44:12530-4. [DOI: 10.1039/c5dt02144h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of bis(σ-B–H) complexes of copper(i) have been prepared by displacement of arene solvent from a β-diketiminate copper(i) complex by four-coordinate boranes, H3B–L (L = NMe3, lutidine).
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Affiliation(s)
- Adi E. Nako
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | | | - Mark R. Crimmin
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
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18
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Rossin A, Rossi A, Peruzzini M, Zanobini F. Chemical Hydrogen Storage: Ammonia Borane Dehydrogenation Catalyzed by NP3Ruthenium Hydrides (NP3=N(CH2CH2PPh2)3). Chempluschem 2014. [DOI: 10.1002/cplu.201402108] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Bellham P, Hill MS, Kociok-Köhn G. Stoichiometric and Catalytic Reactivity of tert-Butylamine–Borane with Calcium Silylamides. Organometallics 2014. [DOI: 10.1021/om500467b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peter Bellham
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, U.K
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, U.K
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20
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Johnson HC, Leitao EM, Whittell GR, Manners I, Lloyd-Jones GC, Weller AS. Mechanistic Studies of the Dehydrocoupling and Dehydropolymerization of Amine–Boranes Using a [Rh(Xantphos)]+ Catalyst. J Am Chem Soc 2014; 136:9078-93. [DOI: 10.1021/ja503335g] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Heather C. Johnson
- Department
of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Erin M. Leitao
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - George R. Whittell
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Ian Manners
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Guy C. Lloyd-Jones
- School
of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Andrew S. Weller
- Department
of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
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21
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Butera V, Russo N, Sicilia E. Hydrogen Release from Dialkylamine-Boranes Promoted by Mg and Ca Complexes: A DFT Analysis of the Reaction Mechanism. Chemistry 2014; 20:5967-76. [DOI: 10.1002/chem.201304329] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Indexed: 11/06/2022]
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22
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Johnson HC, Torry-Harris R, Ortega L, Theron R, McIndoe JS, Weller AS. Exploring the mechanism of the hydroboration of alkenes by amine–boranes catalysed by [Rh(xantphos)]+. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00597j] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [Rh(xantphos)]+ fragment acts as an effective catalyst for the hydroboration of the alkene TBE (tert-butyl ethene) using the amine–borane H3B·NMe3 at low (0.5 mol%) catalyst loadings to give the linear product.
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Affiliation(s)
| | | | - Laura Ortega
- Visiting Student from Departamento de Química Inorgańica
- Instituto de Investigaciones Químicas (IIQ)
- Universidad de Sevilla
- Consejo Superior de Investigaciones Científicas
- 41092 Sevilla, Spain
| | - Robin Theron
- Department of Chemistry
- University of Victoria
- Victoria, Canada
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23
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Tao J, Qi Y. Titanocene-catalyzed dehydrocoupling of the adduct Me2NH·BH3 via competitive pathways: A DFT study. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.08.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Teltewskoi M, Kalläne SI, Braun T, Herrmann R. Synthesis of Rhodium(I) Boryl Complexes: Catalytic N-H Activation of Anilines and Ammonia. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300972] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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25
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Marziale AN, Friedrich A, Klopsch I, Drees M, Celinski VR, Schmedt auf der Günne J, Schneider S. The Mechanism of Borane–Amine Dehydrocoupling with Bifunctional Ruthenium Catalysts. J Am Chem Soc 2013; 135:13342-55. [DOI: 10.1021/ja311092c] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander N. Marziale
- Department
Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Anja Friedrich
- Department
Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching b. München, Germany
| | - Isabel Klopsch
- Georg-August-Universität Göttingen, Tammannstrasse
4, 37077 Göttingen, Germany
| | - Markus Drees
- Department
Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching b. München, Germany
| | - Vinicius R. Celinski
- Department
Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Jörn Schmedt auf der Günne
- Department
Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstrasse
5-13, 81377 München, Germany
| | - Sven Schneider
- Department
Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching b. München, Germany
- Department
Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
- Georg-August-Universität Göttingen, Tammannstrasse
4, 37077 Göttingen, Germany
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26
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Kottalanka RK, Anga S, Naktode K, Laskar P, Nayek HP, Panda TK. Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies. Organometallics 2013. [DOI: 10.1021/om400121d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ravi K. Kottalanka
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Srinivas Anga
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Kishor Naktode
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Payel Laskar
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, Jharkhand, India
| | - Tarun K. Panda
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
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27
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Robertson APM, Leitao EM, Jurca T, Haddow MF, Helten H, Lloyd-Jones GC, Manners I. Mechanisms of the Thermal and Catalytic Redistributions, Oligomerizations, and Polymerizations of Linear Diborazanes. J Am Chem Soc 2013; 135:12670-83. [DOI: 10.1021/ja404247r] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Erin M. Leitao
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, United Kingdom
| | - Titel Jurca
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, United Kingdom
| | - Mairi F. Haddow
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, United Kingdom
| | - Holger Helten
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen,
Germany
| | - Guy C. Lloyd-Jones
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, United Kingdom
| | - Ian Manners
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, United Kingdom
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28
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Sewell LJ, Huertos MA, Dickinson ME, Weller AS, Lloyd-Jones GC. Dehydrocoupling of Dimethylamine Borane Catalyzed by Rh(PCy3)2H2Cl. Inorg Chem 2013; 52:4509-16. [DOI: 10.1021/ic302804d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Laura J. Sewell
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1
3TA, United Kingdom
| | - Miguel A. Huertos
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1
3TA, United Kingdom
| | - Molly E. Dickinson
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1
3TA, United Kingdom
| | - Andrew S. Weller
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1
3TA, United Kingdom
| | - Guy C. Lloyd-Jones
- School
of Chemistry, University of Bristol, Bristol
BS8 1TS, United Kingdom
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29
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Huertos MA, Weller AS. Revealing the P–B coupling event in the rhodium catalysed dehydrocoupling of phosphine–boranes H3B·PR2H (R = tBu, Ph). Chem Sci 2013. [DOI: 10.1039/c3sc50122a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Bellham P, Hill MS, Kociok-Köhn G, Liptrot DJ. Bespoke synthesis of unsymmetrical diaminoboranes by alkaline earth catalysis. Chem Commun (Camb) 2013; 49:1960-2. [DOI: 10.1039/c3cc39072a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Garralda MA, Mendicute-Fierro C, Rodríguez-Diéguez A, Seco JM, Ubide C, Zumeta I. Efficient hydridoirida-β-diketone-catalyzed hydrolysis of ammonia- or amine-boranes for hydrogen generation in air. Dalton Trans 2013; 42:11652-60. [DOI: 10.1039/c3dt51261d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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32
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Bellham P, Hill MS, Kociok-Köhn G, Liptrot DJ. Alkaline earth alkyl insertion chemistry of in situ generated aminoboranes. Dalton Trans 2013; 42:737-45. [DOI: 10.1039/c2dt31849k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Rossin A, Bottari G, Lozano-Vila AM, Paneque M, Peruzzini M, Rossi A, Zanobini F. Catalytic amine-borane dehydrogenation by a PCP-pincer palladium complex: a combined experimental and DFT analysis of the reaction mechanism. Dalton Trans 2013; 42:3533-41. [DOI: 10.1039/c2dt32273k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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34
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Kumar R, Jagirdar BR. B–H Bond Activation Using an Electrophilic Metal Complex: Insights into the Reaction Pathway. Inorg Chem 2012; 52:28-36. [DOI: 10.1021/ic300390s] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rahul Kumar
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Balaji R. Jagirdar
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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35
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A computational investigation of the role of the iridium dihydrogen pincer complex in the formation of the cyclic pentamer (NH2BH2)5. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Baker RT, Gordon JC, Hamilton CW, Henson NJ, Lin PH, Maguire S, Murugesu M, Scott BL, Smythe NC. Iron Complex-Catalyzed Ammonia–Borane Dehydrogenation. A Potential Route toward B–N-Containing Polymer Motifs Using Earth-Abundant Metal Catalysts. J Am Chem Soc 2012; 134:5598-609. [DOI: 10.1021/ja210542r] [Citation(s) in RCA: 181] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Tom Baker
- Department
of Chemistry and
Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario Canada K1N 6N5
| | | | | | | | - Po-Heng Lin
- Department
of Chemistry and
Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario Canada K1N 6N5
| | - Steven Maguire
- Department
of Chemistry and
Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario Canada K1N 6N5
| | - Muralee Murugesu
- Department
of Chemistry and
Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario Canada K1N 6N5
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37
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Wallis CJ, Dyer H, Vendier L, Alcaraz G, Sabo-Etienne S. Dehydrogenation of Diamine-Monoboranes to Cyclic Diaminoboranes: Efficient Ruthenium-Catalyzed Dehydrogenative Cyclization. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108874] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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38
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Wallis CJ, Dyer H, Vendier L, Alcaraz G, Sabo-Etienne S. Dehydrogenation of Diamine-Monoboranes to Cyclic Diaminoboranes: Efficient Ruthenium-Catalyzed Dehydrogenative Cyclization. Angew Chem Int Ed Engl 2012; 51:3646-8. [DOI: 10.1002/anie.201108874] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Indexed: 11/09/2022]
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39
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Sewell LJ, Lloyd-Jones GC, Weller AS. Development of a Generic Mechanism for the Dehydrocoupling of Amine-Boranes: A Stoichiometric, Catalytic, and Kinetic Study of H3B·NMe2H Using the [Rh(PCy3)2]+ Fragment. J Am Chem Soc 2012; 134:3598-610. [DOI: 10.1021/ja2112965] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Laura J. Sewell
- Department of Chemistry, Inorganic
Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Guy C. Lloyd-Jones
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol
BS8 1TS, U.K
| | - Andrew S. Weller
- Department of Chemistry, Inorganic
Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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40
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Ciganda R, Garralda MA, Ibarlucea L, Mendicute-Fierro C, Torralba MC, Torres MR. Reactions of hydridoirida-β-diketones with amines or with 2-aminopyridines: formation of hydridoirida-β-ketoimines, PCN terdentate ligands, and acyl decarbonylation. Inorg Chem 2012; 51:1760-8. [PMID: 22257029 DOI: 10.1021/ic202065d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The hydridoirida-β-diketone [IrHCl{(PPh(2)(o-C(6)H(4)CO))(2)H}] (1) reacts with benzylamine (C(6)H(5)CH(2)NH(2)) to give the hydridoirida-β-ketoimine [IrHCl{(PPh(2)(o-C(6)H(4)CO))(PPh(2)(o-C(6)H(4)CNCH(2)C(6)H(5)))H}] (2), stabilized by an intramolecular hydrogen bond. 2 reacts with water to undergo hydrolysis and amine coordination giving hydridodiacylamino [IrH(PPh(2)(o-C(6)H(4)CO))(2)(C(6)H(5)CH(2)NH(2))] (3). Cyclohexylamine or dimethylamine lead to hydridodiacylamino [IrH(PPh(2)(o-C(6)H(4)CO))(2)L] (4-5). In chlorinated solvents hydridodiacylamino complexes undergo exchange of hydride by chloride to afford [IrCl(PPh(2)(o-C(6)H(4)CO))(2)L] (6-9). The reaction of 1 with hydrazine (H(2)NNH(2)) gives hydridoirida-β-ketoimine [IrHCl{(PPh(2)(o-C(6)H(4)CO))(PPh(2)(o-C(6)H(4)CNNH(2)))H}] (10), fluxional in solution with values for ΔH(‡) of 2.5 ± 0.3 kcal mol(-1) and for ΔS(‡) of -32.9 ± 3 eu. A hydrolysis/imination sequence can be responsible for fluxionality. 2-Aminopyridines (RHNC(5)H(3)R'N) react with 1 to afford cis-[IrCl(PPh(2)(o-C(6)H(4)CO))(PPh(2)(o-C(6)H(4)CHNRC(5)H(3)R'N))] (R = R' = H (11), R = CH(3), R' = H (12), R = H, R' = CH(3) (13)) containing new terdentate PCN ligands in a facial disposition and cis phosphorus atoms as kinetic products. The formation of 11-13 requires imination of the hydroxycarbene moiety of 1, coordination of the nitrogen atom of pyridine to iridium, and iridium to carbon hydrogen transfer. In refluxing methanol, complexes 11-13 isomerize to afford the thermodynamic products 14-16 with trans phosphorus atoms. Chloride abstraction from complexes [IrCl(PPh(2)(o-C(6)H(4)CO))(PPh(2)(o-C(6)H(4)CHNRC(5)H(4)N))] (R = H or CH(3)) leads to decarbonylation of the acylphosphine chelating group to afford cationic complexes [Ir(CO)(PPh(2)(o-C(6)H(4)))(PPh(2)(o-C(6)H(4)CHNRC(5)H(4)N))]A, 17 (R = H, A = ClO(4)) and 18 (R = CH(3), A = BF(4)) as a cis/trans = 4:1 mixture of isomers. Single crystal X-ray diffraction analysis was performed on 6, 9, 13, and 14.
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Affiliation(s)
- Roberto Ciganda
- Facultad de Química de San Sebastián, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain
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41
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Caliskan S, Zahmakiran M, Durap F, Özkar S. Hydrogen liberation from the hydrolytic dehydrogenation of dimethylamine–borane at room temperature by using a novel ruthenium nanocatalyst. Dalton Trans 2012; 41:4976-84. [DOI: 10.1039/c2dt00042c] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Tang CY, Phillips N, Bates JI, Thompson AL, Gutmann MJ, Aldridge S. Dimethylamine borane dehydrogenation chemistry: syntheses, X-ray and neutron diffraction studies of 18-electron aminoborane and 14-electron aminoboryl complexes. Chem Commun (Camb) 2012; 48:8096-8. [DOI: 10.1039/c2cc33361a] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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43
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Tang CY, Phillips N, Kelly MJ, Aldridge S. Hydrogen shuttling: synthesis and reactivity of a 14-electron iridium complex featuring a bis(alkyl) tethered N-heterocyclic carbene ligand. Chem Commun (Camb) 2012; 48:11999-2001. [DOI: 10.1039/c2cc35947b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Chaplin AB, Weller AS. A rhodium(III) complex of the linear diborazine H3B·NMe2BH2·NMe2H: an intermediate in the dehydrocoupling of H3B·NMe2H. Acta Crystallogr C 2011; 67:m355-8. [DOI: 10.1107/s0108270111043447] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 10/19/2011] [Indexed: 11/10/2022] Open
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45
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Robertson APM, Whittell GR, Staubitz A, Lee K, Lough AJ, Manners I. Experimental and Theoretical Studies of the Potential Interconversion of the Amine-Borane iPr2NH·BH(C6F5)2 and the Aminoborane iPr2N=B(C6F5)2 Involving Hydrogen Loss and Uptake. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100779] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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47
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MacInnis MC, McDonald R, Ferguson MJ, Tobisch S, Turculet L. Four-coordinate, 14-electron Ru(II) complexes: unusual trigonal pyramidal geometry enforced by bis(phosphino)silyl ligation. J Am Chem Soc 2011; 133:13622-33. [PMID: 21830772 DOI: 10.1021/ja204935x] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unprecedented diamagnetic, four-coordinate, formally 14-electron (Cy-PSiP)RuX (Cy-PSiP = [κ(3)-(2-R(2)PC(6)H(4))(2)SiMe](-); X = amido, alkoxo) complexes that do not require agostic stabilization and that adopt a highly unusual trigonal pyramidal coordination geometry are reported. The tertiary silane [(2-Cy(2)PC(6)H(4))(2)SiMe]H ((Cy-PSiP)H) reacted with 0.5 [(p-cymene)RuCl(2)](2) in the presence of Et(3)N and PCy(3) to afford [(Cy-PSiP)RuCl](2) (1) in 74% yield. Treatment of 1 with KO(t)Bu led to the formation of (Cy-PSiP)RuO(t)Bu (2, 97% yield), which was crystallographically characterized and shown to adopt a trigonal pyramidal coordination geometry in the solid state. Treatment of 1 with NaN(SiMe(3))(2) led to the formation of (Cy-PSiP)RuN(SiMe(3))(2) (3, 70% yield), which was also found to adopt a trigonal pyramidal coordination geometry in the solid state. The related anilido complexes (Cy-PSiP)RuNH(2,6-R(2)C(6)H(3)) (4, R = H; 5, R = Me) were also prepared in >90% yields by treating 1 with LiNH(2,6-R(2)C(6)H(3)) (R = H, Me) reagents. The solid state structure of 5 indicates a monomeric trigonal pyramidal complex that features a C-H agostic interaction. Complexes 2 and 3 were found to react readily with 1 equiv of H(2)O to form the dimeric hydroxo-bridged complex [(Cy-PSiP)RuOH](2) (6, 94% yield), which was crystallographically characterized. Complexes 2 and 3 also reacted with 1 equiv of PhOH to form the new 18-electron η(5)-oxocyclohexadienyl complex (Cy-PSiP)Ru(η(5)-C(6)H(5)O) (7, 84% yield). Both amido and alkoxo (Cy-PSiP)RuX complexes reacted with H(3)B·NHRR' reagents to form bis(σ-B-H) complexes of the type (Cy-PSiP)RuH(η(2):η(2)-H(2)BNRR') (8, R = R' = H; 9, R = R' = Me; 10, R = H, R' = (t)Bu), which illustrates that such four-coordinate (Cy-PSiP)RuX (X = amido, alkoxo) complexes are able to undergo multiple E-H (E = main group element) bond activation steps. Computational methods were used to investigate structurally related PCP, PPP, PNP, and PSiP four-coordinate Ru complexes and confirmed the key role of the strongly σ-donating silyl group of the PSiP ligand set in enforcing the unusual trigonal pyramidal coordination geometry featured in complexes 2-5, thus substantiating a new strategy for the synthesis of low-coordinate Ru species. The mechanism of the activation of ammonia-borane by such low-coordinate (R-PSiP)RuX (X = amido, alkoxo) species was also studied computationally and was determined to proceed most likely in a stepwise fashion via intramolecular deprotonation of ammonia and subsequent borane B-H bond oxidative addition steps.
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Affiliation(s)
- Morgan C MacInnis
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4J3, Canada
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48
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Johnson HC, Robertson APM, Chaplin AB, Sewell LJ, Thompson AL, Haddow MF, Manners I, Weller AS. Catching the First Oligomerization Event in the Catalytic Formation of Polyaminoboranes: H3B·NMeHBH2·NMeH2 Bound to Iridium. J Am Chem Soc 2011; 133:11076-9. [DOI: 10.1021/ja2040738] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Heather C. Johnson
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | | | - Adrian B. Chaplin
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Laura J. Sewell
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Amber L. Thompson
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Mairi F. Haddow
- School of Chemistry, University of Bristol, Cantocks Close, Bristol BS8 1TS, U.K
| | - Ian Manners
- School of Chemistry, University of Bristol, Cantocks Close, Bristol BS8 1TS, U.K
| | - Andrew S. Weller
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
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49
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Ledger AEW, Ellul CE, Mahon MF, Williams JMJ, Whittlesey MK. Ruthenium Bidentate Phosphine Complexes for the Coordination and Catalytic Dehydrogenation of Amine- and Phosphine-Boranes. Chemistry 2011; 17:8704-13. [DOI: 10.1002/chem.201100101] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 03/30/2011] [Indexed: 11/06/2022]
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50
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Vidovic D, Addy DA, Krämer T, McGrady J, Aldridge S. Probing the intrinisic structure and dynamics of aminoborane coordination at late transition metal centers: mono(σ-BH) binding in [CpRu(PR3)2(H2BNCy2)]+. J Am Chem Soc 2011; 133:8494-7. [PMID: 21563831 DOI: 10.1021/ja203051d] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aminoboranes, H(2)BNRR', represent the monomeric building blocks from which novel polymeric materials can be constructed via metal-mediated processes. The fundamental capabilities of these compounds to interact with metal centers have been probed through the coordination of H(2)BNCy(2) at 16-electron [CpRu(PR(3))(2)](+) fragments. In contrast to the side-on binding of isoelectronic alkene donors, an alternative mono(σ-BH) mode of aminoborane ligation is established for H(2)BNCy(2), with binding energies only ~8 kcal mol(-1) greater than those for analogous dinitrogen complexes. Variations in ground-state structure and exchange dynamics as a function of the phosphine ancillary ligand set are consistent with chemically significant back-bonding into an orbital of B-H σ* character.
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Affiliation(s)
- Dragoslav Vidovic
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, UK.
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