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Xie Y, Miao Q, Deng W, Lu Y, Yang Y, Chen X, Liao RZ, Ye S, Tung CH, Wang W. Facile Transformations of a Binuclear Cp*Co(II) Diamidonaphthalene Complex to Mixed-Valent Co(II)Co(III), Co(III)(μ-H)Co(III), and Co(III)(μ-OH)Co(III) Derivatives. Inorg Chem 2022; 61:2204-2210. [PMID: 35049285 DOI: 10.1021/acs.inorgchem.1c03451] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A diamido-bridged dicobalt complex supported by a diamidonaphthalene ligand, Cp*2Co2(μ-1,8-C10H8(NH)2) (1), was synthesized, and the reactivity relevant to redox transformations of the Co2N2 core was investigated. It was found that the Co(II)-Co(II) bond allows for protonation by [HPPh3][BF4] resulting in a bridging hydride, [1H]+, with pKa ∼ 7.6 in CH2Cl2. The diamidonaphthalene ligand can stabilize the binuclear system in the Co(II)Co(III) mixed-valent state (1+), which is capable of binding CO to afford [1-CO]+. Surprisingly, the mixed-valent complex also activates H2O to furnish a Co(III)Co(III) hydroxy complex [1-OH]+ accompanied by release of H2. The hydroxy ligand in [1-OH]+ is exchangeable, as demonstrated by 18O-labeling experiments on [1-OH]+ with H218O that led to the heavier isotopolog [1-18OH]+.
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Affiliation(s)
- Yufang Xie
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Qiyi Miao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenhao Deng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yilei Lu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yinuo Yang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Xiaohui Chen
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Wenguang Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.,College of Chemistry, Beijing Normal University, Beijing 100875, China
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2
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Bimetallic Reactivities of Dinuclear Iridium and Rhodium Complexes Generated from Two Types of Alkyne-Containing Bisphosphine Ligands. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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3
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Nakajima T, Noda S, Sakamoto M, Matsui A, Nakamae K, Kure B, Ura Y, Tanase T. Oxidative addition of an aromatic ortho C-H bond of tetraphosphine to asymmetric diiridium(i) centres. Dalton Trans 2016; 45:4747-61. [PMID: 26863395 DOI: 10.1039/c5dt04725k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of a tetraphosphine, meso-bis{[(diphenylphosphinomethyl)phenyl]phosphino}propane (dpmppp), with [IrCl(cod)]2 and CO (1 atm) or isocyanide (RNC) in the presence of NH4PF6 at 80-100 °C in dichloromethane/acetonitrile/acetone and/or methanol mixed solvents afforded asymmetric diiridium(ii) complexes, [Ir2(H)(Cl)(μ-(dpmppp-H)-κP(4)C)(CO)3]PF6 (1) and [Ir2(H)(μ-(dpmppp-H)-κP(4)C)(RNC)4)]-(PF6)2 (R = 2,6-xylyl (2), 2,4,6-mesityl (3); dpmppp-H = {PPh(o-C6H4)CH2P(Ph)(CH2)3P(Ph)CH2PPh2}(-)). A similar reaction with (t)BuNC resulted in the formation of a mononuclear Ir(III) complex of [Ir(H)(dpmppp-κP(3))((t)BuNC)2](PF6)2 (4). Complexes 1-3 were characterized by ESI mass spectrometry, (1)H and (31)P NMR spectroscopy and X-ray diffraction analyses. They were found to consist of cis/trans-P,P asymmetric Ir(II)-Ir(II) bonded dinuclear structures derived from oxidative addition of an ortho C-H bond of dpmppp (Ir-Ir = 2.8044(2) Å (1), 2.8569(2) Å (2), and 2.8524(5) Å (3)), resulting in a [IrPCCIr] intermetallic cyclometal-bridge and a terminal hydride. DFT calculations indicated the presence of Ir-Ir, Ir-H, and Ir-Cortho covalent bonds. Initial stages of the reactions with CO and XylNC at room temperature were investigated by (31)P{(1)H} NMR spectroscopy and found to contain a symmetrical Ir(I) dinuclear unit with dpmppp that was readily transformed into 1 and 2 upon heating. The Ir intermediate with XylNC, [Ir2(XylNC)4(μ-dpmppp)](PF6)2 (6), was isolated and characterized by X-ray crystallography and DFT calculations as an electron-deficient 32e(-) Ir species involving a Ir(I)→Ir(I) dative bond (2.7989(5) Å). The reaction pathways from 6 to 2 were investigated by DFT calculations. The present study suggested that a novel oxidative addition of an ortho C-H bond proceeded on the cis/trans-P,P asymmetric diiridium(i) scaffold supported by the tetraphosphine, dpmppp, which was assumed to be facilitated by dimetal cooperation with switching Ir→Ir dative interactions.
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Affiliation(s)
- Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara 630-8506, Japan.
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Lahoz FJ, Pérez-Torrente JJ. In Honour of the 70th Birthday of Professor Luis A. Oro. ChemCatChem 2015. [DOI: 10.1002/cctc.201505050] [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]
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Less RJ, Allen LK, Steiner A, Wright DS. Multiple deprotonation of primary aromatic diamines by LiAlH4. Dalton Trans 2015; 44:4141-7. [DOI: 10.1039/c4dt03802a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of LiAlH4with 1,2-phenylenediamine (1H4) in THF gives [{Al(1H2)}2{Al(1H)2}2][Li(THF)2]4, containing the largest aluminate of its type so far reported.
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Hetterscheid DGH, Chikkali SH, de Bruin B, Reek JNH. Binuclear Cooperative Catalysts for the Hydrogenation and Hydroformylation of Olefins. ChemCatChem 2013. [DOI: 10.1002/cctc.201300092] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Ferreira DE, De Almeida WB, Neves A, Rocha WR. Broken symmetry density functional study of biomimetic models for Purple Acid Phosphatases of the type Fe(III)–M(II) (M=Fe, Cu, Ni, Co and Mn). COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2011.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Zuo W, Braunstein P. N-Heterocyclic Dicarbene Iridium(III) Pincer Complexes Featuring Mixed NHC/Abnormal NHC Ligands and Their Applications in the Transfer Dehydrogenation of Cyclooctane. Organometallics 2011. [DOI: 10.1021/om200444q] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Weiwei Zuo
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
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Chemical bonding in complexes with high coordination numbers: a charge density study. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.04.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Wells KD, Ferguson MJ, McDonald R, Cowie M. Ethylene Substitution in a Bis-Ethylene Complex of Rh/Os and Unusual Brønsted−Lowry Basicity of an N-Heterocyclic Carbene. Organometallics 2011. [DOI: 10.1021/om101000y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle D. Wells
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Ferguson
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Martin Cowie
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Peloso R, Pattacini R, Cazin CSJ, Braunstein P. Structure and Reactivity of New Iridium Complexes with Bis(Oxazoline)-Phosphonito Ligands. Inorg Chem 2009; 48:11415-24. [DOI: 10.1021/ic901579u] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Riccardo Peloso
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67070 Strasbourg Cedex, France
| | - Roberto Pattacini
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67070 Strasbourg Cedex, France
| | - Catherine S. J. Cazin
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67070 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67070 Strasbourg Cedex, France
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Patureau FW, de Boer S, Kuil M, Meeuwissen J, Breuil PAR, Siegler MA, Spek AL, Sandee AJ, de Bruin B, Reek JNH. Sulfonamido−Phosphoramidite Ligands in Cooperative Dinuclear Hydrogenation Catalysis. J Am Chem Soc 2009; 131:6683-5. [DOI: 10.1021/ja9024879] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frederic W. Patureau
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Sandra de Boer
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Mark Kuil
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Jurjen Meeuwissen
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Pierre-Alain R. Breuil
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Maxime A. Siegler
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Anthony L. Spek
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Albertus J. Sandee
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Bas de Bruin
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Joost N. H. Reek
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
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Broken symmetry approach and density functional theory investigation on hetero-spin system consisting of copper(II) and aminoxyl radicals: Comparison and reliability of different basis sets approaches. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2008.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Tejel C, Ciriano M, Passarelli V, López J, de Bruin B. Intervalent Bis(μ-aziridinato)MIIMIComplexes (M=Rh, Ir): Delocalized Metallo-Radicals or Delocalized Aminyl Radicals? Chemistry 2008; 14:10985-98. [DOI: 10.1002/chem.200801615] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Tanabe Y, Hanasaka F, Fujita KI, Yamaguchi R. Scope and Mechanistic Studies of Intramolecular Aliphatic C−H Bond Activation of N-Heterocyclic Carbene Iridium Complexes. Organometallics 2007. [DOI: 10.1021/om7004589] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yusuke Tanabe
- Graduate School of Human and Environmental Studies, and Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Fumihiro Hanasaka
- Graduate School of Human and Environmental Studies, and Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Ken-ichi Fujita
- Graduate School of Human and Environmental Studies, and Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Ryohei Yamaguchi
- Graduate School of Human and Environmental Studies, and Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
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Martín M, Sola E, Tejero S, López JA, Oro LA. Mechanistic Investigations of Imine Hydrogenation Catalyzed by Dinuclear Iridium Complexes. Chemistry 2006; 12:4057-68. [PMID: 16534824 DOI: 10.1002/chem.200501231] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Treatment of [Ir2(mu-H)(mu-Pz)2H3(NCMe)(PiPr3)2] (1) with one equivalent of HBF4 or [PhNH=CHPh]BF4 affords efficient catalysts for the homogeneous hydrogenation of N-benzylideneaniline. The reaction of 1 with HBF4 leads to the trihydride-dihydrogen complex [Ir2(mu-H)(mu-Pz)2H2(eta2-H2)(NCMe)(PiPr3)2]BF4 (2), which has been characterized by NMR spectroscopy and DFT calculations on a model complex. Complex 2 reacts with imines such as tBuN=CHPh or PhN=CHPh to afford amine complexes [Ir2(mu-H)(mu-Pz)2H2(NCMe){L}(PiPr3)2]BF4 (L = NH(tBu)CH2Ph, 3; NH(Ph)CH2Ph, 4) through a sequence of proton- and hydride-transfer steps. Dihydrogen partially displaces the amine ligand of 4 to form 2; this complements a possible catalytic cycle for the N-benzylideneaniline hydrogenation in which the amine-by-dihydrogen substitution is the turnover-determining step. The rates of ligand substitution in 4 and its analogues with labile ligands other than amine are dependent upon the nature of the leaving ligand and independent on the incoming ligand concentration, in agreement with dissociative substitutions. Water complex [Ir2(mu-H)(mu-Pz)2H2(NCMe)(OH2)(PiPr3)2]BF4 (7) hydrolyzes N-benzylideneaniline, which eventually affords the poor hydrogenation catalyst [Ir2(mu-H)(mu-Pz)2H2(NCMe)(NH2Ph)(PiPr3)2]BF4 (11). The rate law for the catalytic hydrogenation in 1,2-dichloroethane with complex [Ir2(mu-H)(mu-Pz)2H2(OSO2CF3)(NCMe)(PiPr3)2] (8) as catalyst precursor is rate = k[8]{p(H2)}; this is in agreement with the catalytic cycle deduced from the stochiometric experiments. The hydrogenation reaction takes place at a single iridium center of the dinuclear catalyst, although ligand modifications at the neighboring iridium center provoke changes in the hydrogenation rate. Even though this catalyst system is also capable of effectively hydrogenating alkenes, N-benzylideneaniline can be selectively hydrogenated in the presence of simple alkenes.
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Affiliation(s)
- Marta Martín
- Departamento de Compuestos de Coordinación y Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC and Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza, 50009 Zaragoza, Spain
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Zbiri M, Saha S, Adhikary C, Chaudhuri S, Daul C, Koner S. Asymmetric μ2-1,1-azido bridged copper(II) complex: Synthesis, X-ray structure, magnetic study and DFT calculations. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.09.005] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wigginton JR, Trepanier SJ, McDonald R, Ferguson MJ, Cowie M. Bridging Methylene and Methyl Complexes of Rhodium/Osmium: Influence of the Ancillary Ligands on the Methyl Binding Mode. Organometallics 2005. [DOI: 10.1021/om0580405] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James R. Wigginton
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Steven J. Trepanier
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Ferguson
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Martin Cowie
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Jiménez MV, Sola E, Lahoz FJ, Oro LA. Reactions of Diamidonaphthalene-Bridged Diiridium Tetrahydrides with Alkynes: Hydrogenation, Vinylidene Formation, and Catalytic C−C Coupling. Organometallics 2005. [DOI: 10.1021/om050044m] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, and Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Eduardo Sola
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, and Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, and Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, and Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza, 50009 Zaragoza, Spain
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Trepanier SJ, Dennett JNL, Sterenberg BT, McDonald R, Cowie M. Selective Coupling of Methylene Groups at a Rh/Os Core, Yielding C2, C3, or C4 Fragments: Roles of the Adjacent Metals in Carbon−Carbon Bond Formation. J Am Chem Soc 2004; 126:8046-58. [PMID: 15212555 DOI: 10.1021/ja040054z] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mixed-metal complex, [RhOs(CO)(4)(dppm)(2)][BF(4)] (1; dppm = micro-Ph(2)PCH(2)PPh(2)) reacts with diazomethane to yield a number of products resulting from methylene incorporation into the bimetallic core. At -80 degrees C the reaction between 1 and CH(2)N(2) yields the methylene-bridged [RhOs(CO)(3)(micro-CH(2))(micro-CO)(dppm)(2)][BF(4)] (2), which reacts further at ambient temperature to give the allyl methyl species, [RhOs(eta(1)-C(3)H(5))(CH(3))(CO)(3)(dppm)(2)][BF(4)] (4). At intermediate temperatures compounds 1 and 2 react with diazomethane to yield the butanediyl complex [RhOs(C(4)H(8))(CO)(3)(dppm)(2)][BF(4)] (3) by the incorporation and coupling of four methylene units. Compound 2 is proposed to be an intermediate in the formation of 3 and 4 from 1 and on the basis of labeling studies a mechanism has been proposed in which sequential insertions of diazomethane-generated methylene fragments into the Rh-C bond of bridging hydrocarbyl fragments occur. Reaction of the tricarbonyl species, [RhOs(CO)(3)(micro-CH(2))(dppm)(2)][BF(4)] with diazomethane over a range of temperatures generates the ethylene complex [RhOs(eta(2)-C(2)H(4))(CO)(3)(dppm)(2)][BF(4)] (7a), but no further incorporation of methylene groups is observed. This observation suggests that carbonyl loss in the formation of the above allyl and butanediyl species only occurs after incorporation of the third methylene fragment. Attempts to generate C(2)-bridged species by the reaction of 1 with ethylene gave no reaction, however, in the presence of trimethylamine oxide the ethylene adducts [RhOs(eta(2)-C(2)H(4))(CO)(3)(dppm)(2)][BF(4)] (7b; an isomer of 7a) and [RhOs(eta(2)-C(2)H(4))(2)(CO)(2)(dppm)(2)][BF(4)] (8) were obtained. The relationship of the above products to the selective coupling of methylene groups, and the roles of the different metals are discussed.
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Affiliation(s)
- Steven J Trepanier
- Department of Chemistry, University of Alberta Edmonton, AB, Canada T6G 2G2
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Jiménez M, Caballero J, Sola E, Lahoz FJ, Oro LA. Benzene-1,2-dithiolate-induced assembly of reactive iridium fragments into tetranuclear octahydride complexes. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.02.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Jiménez M, Sola E, Francisco AC, Oro LA, Lahoz FJ, Martı́nez AP. Methylene- and diamidonaphthalene-bridged diiridium(III) complexes. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01549-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Paredes P, Miguel D, Villafañe F. Synthesis of (η3-Allyl)bromodicarbonylbis(pyrazole)molybdenum(II) and Reactivity towards [Au(acac)PPh3]: Structure and Dynamic Behavior of the Monometallic Pyrazole and Heterometallic Pyrazolate Complexes. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390132] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cavallo L, Jacobsen H. Manganese-Salen Complexes as Oxygen-Transfer Agents in Catalytic Epoxidations − A Density Functional Study of Mechanistic Aspects. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390118] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Man ML, Zhou Z, Ng SM, Lau CP. Synthesis, characterization and reactivity of heterobimetallic complexes (η5-C5R5)Ru(CO)(μ-dppm)M(CO)2(η5-C5H5) (R = H, CH3; M = Mo, W). Interconversion of hydrogen/carbon dioxide and formic acid by these complexes. Dalton Trans 2003. [DOI: 10.1039/b306835h] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Ristic-Petrovic D, Wang M, McDonald R, Cowie M. Binuclear Fluorovinyl Complexes of Iridium: Transformation of an Iridium-Bound Trifluorovinyl Group into a trans-[Ir−C(F)C(F)CH3] Moiety. Organometallics 2002. [DOI: 10.1021/om020295k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Meitian Wang
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Martin Cowie
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada T6G 2G2
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28
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Martín M, Sola E, Lahoz FJ, Oro LA. Trans Additions of Silanes to 1-Alkynes Catalyzed by Ruthenium Complexes: Role of in Situ Formed Polynuclear Aggregates. Organometallics 2002. [DOI: 10.1021/om0205243] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marta Martín
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Eduardo Sola
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
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29
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Rowsell BD, Trepanier SJ, Lam R, McDonald R, Cowie M. Methylene-Bridged Complexes of Rhodium/Ruthenium as Models for Bimetallic Fischer−Tropsch Catalysts: Comparisons with the Rh/Os and Ir/Ru Analogues. Organometallics 2002. [DOI: 10.1021/om020118j] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bryan D. Rowsell
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Steven J. Trepanier
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert Lam
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Martin Cowie
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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30
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Jiménez MV, Sola E, Caballero J, Lahoz FJ, Oro LA. Alkene C−H Activations at Dinuclear Complexes Promoted by Oxidation. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020402)114:7<1256::aid-ange1256>3.0.co;2-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Jiménez MV, Sola E, Caballero J, Lahoz FJ, Oro LA. Alkene C-H activations at dinuclear complexes promoted by oxidation. Angew Chem Int Ed Engl 2002; 41:1208-11. [PMID: 12491261 DOI: 10.1002/1521-3773(20020402)41:7<1208::aid-anie1208>3.0.co;2-f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón ,Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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