1
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Zhao C, Bhagwandin DD, Xu W, Ruffieux P, Khan SI, Pignedoli CA, Fasel R, Rubin Y. Dramatic Acceleration of the Hopf Cyclization on Gold(111): From Enediynes to Peri-Fused Diindenochrysene Graphene Nanoribbons. J Am Chem Soc 2024; 146:2474-2483. [PMID: 38227949 PMCID: PMC10835731 DOI: 10.1021/jacs.3c10144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Hopf et al. reported the high-temperature 6π-electrocyclization of cis-hexa-1,3-diene-5-yne to benzene in 1969. Subsequent studies using this cyclization have been limited by its very high reaction barrier. Here, we show that the reaction barrier for two model systems, (E)-1,3,4,6-tetraphenyl-3-hexene-1,5-diyne (1a) and (E)-3,4-bis(4-iodophenyl)-1,6-diphenyl-3-hexene-1,5-diyne (1b), is decreased by nearly half on a Au(111) surface. We have used scanning tunneling microscopy (STM) and noncontact atomic force microscopy (nc-AFM) to monitor the Hopf cyclization of enediynes 1a,b on Au(111). Enediyne 1a undergoes two sequential, quantitative Hopf cyclizations, first to naphthalene derivative 2, and finally to chrysene 3. Density functional theory (DFT) calculations reveal that a gold atom from the Au(111) surface is involved in all steps of this reaction and that it is crucial to lowering the reaction barrier. Our findings have important implications for the synthesis of novel graphene nanoribbons. Ullmann-like coupling of enediyne 1b at 20 °C on Au(111), followed by a series of Hopf cyclizations and aromatization reactions at higher temperatures, produces nanoribbons 12 and 13. These results show for the first time that graphene nanoribbons can be synthesized on a Au(111) surface using the Hopf cyclization mechanism.
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Affiliation(s)
- Chenxiao Zhao
- Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Dayanni D Bhagwandin
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles Young Dr. East, Los Angeles, California 90095-1567, United States
| | - Wangwei Xu
- Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Pascal Ruffieux
- Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Saeed I Khan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles Young Dr. East, Los Angeles, California 90095-1567, United States
| | - Carlo A Pignedoli
- Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Roman Fasel
- Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Yves Rubin
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles Young Dr. East, Los Angeles, California 90095-1567, United States
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2
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Litle ED, Gabbaï FP. A cationic gold-fluorenyl complex with a dative Au → C + bond: synthesis, structure, and carbophilic reactivity. Chem Commun (Camb) 2023; 59:603-606. [PMID: 36533545 DOI: 10.1039/d2cc05436a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aiming to study the interaction of gold with the highly Lewis acidic fluorenyl cation, we synthesised (o-[Ph2P(C6H4)Flu)AuCl(tht)][BF4] ([2][BF4]) and (o-Ph2P(C6H4)Flu)AuCl2 (3) (Flu = 9-fluorenyl) and found that the latter could be converted into [(o-Ph2P(C6H4)Flu)AuCl]+ ([4]+) upon treatment with NaBArF24 (BArF24 = B(3,5-C6H3(CF3)2)4). [4]+, which has been isolated as a chloride-bridged dimer, readily catalyses the cycloisomerisation of 2-allyl-2-(2-propynyl)malonate. Computational results show that [4]+ possesses a strong Au → C+ bond and readily activates enynes.
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Affiliation(s)
- Elishua D Litle
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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3
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Grirrane A, Álvarez E, García H, Corma A. Synthesis, Structure, Reactivity and Catalytic Implications of a Cationic, Acetylide-Bridged Trigold-JohnPhos Species. Chemistry 2020; 26:8810-8818. [PMID: 32583927 DOI: 10.1002/chem.202000420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Indexed: 01/01/2023]
Abstract
The cationic complex [(JohnPhos-Au)3 (acetylide)][SbF6 ] (JohnPhos=(2-biphenyl)di-tert-butylphosphine, L1) has been characterised structurally and features an acetylide-trigold(I)-JohnPhos system; the trinuclear-acetylide unit, coordinated to the monodentate bulk phosphines, adopts an unprecedented μ,η1 ,η2 ,η1 coordination mode with an additional interaction between distal phenyl rings and gold centres. Other cationic σ,π-[(gold(I)L1)2 ] complexes have also been isolated. The reaction of trimethylsilylacetylene with various alcohols (iPrOH, nBuOH, n-HexOH) catalysed by cationic [AuI L1][SbF6 ] complexes in CH2 Cl2 at 50 °C led to the formation of acetaldehyde acetals with a high degree of chemo- and regioselectivity. The reaction mechanism was studied, and several organic and inorganic intermediates have been characterised. A comparative study with the analogous cationic [CuI L1][PF6 ] complex revealed different behaviour; the copper metal is lost from the coordination sphere leading to the formation of cationic vinylphosphonium and copper nanoparticles. Additionally, a new catalytic approach for the formation of this high-value cationic vinylphosphonium has been established.
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Affiliation(s)
- Abdessamad Grirrane
- Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. de los Naranjos s/n, 46022, Valencia, Spain
| | - Eleuterio Álvarez
- Departamento de Química Inorgánica, Instituto de Investigaciones Químicas CSIC-US, Av. Américo Vespucio 49, 41092, Sevilla, Spain
| | - Hermenegildo García
- Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. de los Naranjos s/n, 46022, Valencia, Spain
| | - Avelino Corma
- Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València, Av. de los Naranjos s/n, 46022, Valencia, Spain
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4
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Lu M, Su Y, Zhao P, Ye X, Cai Y, Shi X, Masson E, Li F, Campbell JL, Chen H. Direct Evidence for the Origin of Bis-Gold Intermediates: Probing Gold Catalysis with Mass Spectrometry. Chemistry 2018; 24:2144-2150. [PMID: 29131927 PMCID: PMC6139295 DOI: 10.1002/chem.201703666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Indexed: 11/11/2022]
Abstract
Gold-catalyzed alkyne hydration was studied by using in situ reacting mass spectrometry (MS) technology. By monitoring the reaction process in solution under different conditions (regular and very diluted catalyst concentrations, different pH values) and examining the reaction occurrence in the early reaction stage (1-2 ms after mixing) with MS, we collected a series of experimental evidence to support that the bis-gold complex is a potential key reaction intermediate. Furthermore, both experimental and computational studies confirmed that the σ,π-bis-gold complexes are not active intermediates toward nucleophilic addition. Instead, formation of geminally diaurated complex C is crucial for this catalytic process.
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Affiliation(s)
- Mei Lu
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
| | - Yijin Su
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Pengyi Zhao
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Yi Cai
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Eric Masson
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
| | - Fengyao Li
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
| | - J Larry Campbell
- AB Sciex, 71 Four Valley Drive, Concord, Ontario, L4K 4V8, Canada
| | - Hao Chen
- Center for Intelligent Chemical Instrumentation, Department of Chemistry and Biochemistry & Edison Institute of Biology, Ohio University, Athens, OH, 45701, USA
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5
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Hartlaub SF, Lauricella NK, Ryczek CN, Furneaux AG, Melton JD, Piro NA, Kassel WS, Nataro C. Late Transition Metal Compounds with 1,1′‐Bis(phosphino)ferrocene Ligands. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601099] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sage F. Hartlaub
- Department of Chemistry Lafayette CollegeHugel Science CenterLafayette College18042EastonPAUSA
| | - Nicole K. Lauricella
- Department of Chemistry Lafayette CollegeHugel Science CenterLafayette College18042EastonPAUSA
| | - Catherine N. Ryczek
- Department of Chemistry Lafayette CollegeHugel Science CenterLafayette College18042EastonPAUSA
| | - Aliza G. Furneaux
- Department of Chemistry Lafayette CollegeHugel Science CenterLafayette College18042EastonPAUSA
| | - Jon D. Melton
- Department of Chemistry and BiochemistryMessiah CollegeOne College Avenue17055MechanicsburgPAUSA
| | - Nicholas A. Piro
- Department of ChemistryVillanova University800 E. Lancaster Avenue19085VillanovaPAUSA
| | - W. S. Kassel
- Department of ChemistryVillanova University800 E. Lancaster Avenue19085VillanovaPAUSA
| | - Chip Nataro
- Department of Chemistry Lafayette CollegeHugel Science CenterLafayette College18042EastonPAUSA
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6
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Bistoni G, Belanzoni P, Belpassi L, Tarantelli F. π Activation of Alkynes in Homogeneous and Heterogeneous Gold Catalysis. J Phys Chem A 2016; 120:5239-47. [DOI: 10.1021/acs.jpca.6b01037] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Bistoni
- Dipartimento
di Chimica, Biologia e Biotecnologie, Universitá di Perugia, Via Elce
di Sotto 8, 06123 Perugia, Italy
- Istituto di Scienze e Tecnologie Molecolari del CNR, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Paola Belanzoni
- Dipartimento
di Chimica, Biologia e Biotecnologie, Universitá di Perugia, Via Elce
di Sotto 8, 06123 Perugia, Italy
- Istituto di Scienze e Tecnologie Molecolari del CNR, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie Molecolari del CNR, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Francesco Tarantelli
- Dipartimento
di Chimica, Biologia e Biotecnologie, Universitá di Perugia, Via Elce
di Sotto 8, 06123 Perugia, Italy
- Istituto di Scienze e Tecnologie Molecolari del CNR, Via Elce di Sotto 8, 06123 Perugia, Italy
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7
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Das A, Hua Y, Yousufuddin M, Cundari TR, Jeon J, Dias HVR. Gold‐Mediated Isomerization of Cyclooctyne to Ring Fused Olefinic Bicycles. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Animesh Das
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://https://www.uta.edu/chemistry/faculty/directory/Dias.php
| | - Yuanda Hua
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://https://www.uta.edu/chemistry/faculty/directory/Dias.php
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://https://www.uta.edu/chemistry/faculty/directory/Dias.php
| | - Thomas R. Cundari
- Department of Chemistry, University of North Texas, Denton, Texas 76203, USA
| | - Junha Jeon
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://https://www.uta.edu/chemistry/faculty/directory/Dias.php
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA, http://https://www.uta.edu/chemistry/faculty/directory/Dias.php
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8
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Lepetit C, Maraval V, Canac Y, Chauvin R. On the nature of the dative bond: Coordination to metals and beyond. The carbon case. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Roşca DA, Wright JA, Bochmann M. An element through the looking glass: exploring the Au-C, Au-H and Au-O energy landscape. Dalton Trans 2015; 44:20785-807. [PMID: 26584519 PMCID: PMC4669034 DOI: 10.1039/c5dt03930d] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 11/12/2015] [Indexed: 11/21/2022]
Abstract
Gold, the archetypal "noble metal", used to be considered of little interest in catalysis. It is now clear that this was a misconception, and a multitude of gold-catalysed transformations has been reported. However, one consequence of the long-held view of gold as inert metal is that its organometallic chemistry contains many "unknowns", and catalytic cycles devised to explain gold's reactivity draw largely on analogies with other transition metals. How realistic are such mechanistic assumptions? In the last few years a number of key compound classes have been discovered that can provide some answers. This Perspective attempts to summarise these developments, with particular emphasis on recently discovered gold(iii) complexes with bonds to hydrogen, oxygen, alkenes and CO ligands.
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Affiliation(s)
- Dragoş-Adrian Roşca
- School of Chemistry , University of East Anglia , Norwich , NR4 7TJ , UK . ; Tel: +44 (0)16035 92044
- Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr , Germany
| | - Joseph A. Wright
- School of Chemistry , University of East Anglia , Norwich , NR4 7TJ , UK . ; Tel: +44 (0)16035 92044
| | - Manfred Bochmann
- School of Chemistry , University of East Anglia , Norwich , NR4 7TJ , UK . ; Tel: +44 (0)16035 92044
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10
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Braunschweig H, Ewing WC, Kramer T, Mattock JD, Vargas A, Werner C. Organometallic Probe for the Electronics of Base-Stabilized Group 11 Metal Cations. Chemistry 2015; 21:12347-56. [DOI: 10.1002/chem.201500788] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Indexed: 11/10/2022]
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11
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Hansmann MM, Rominger F, Boone MP, Stephan DW, Hashmi ASK. Reactivity of Organogold Compounds with B(C6F5)3: Gold–Boron Transmetalation via σ-B/π-Au Species. Organometallics 2014. [DOI: 10.1021/om5006885] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Max M. Hansmann
- Organisch-Chemisches
Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches
Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Michael P. Boone
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Douglas W. Stephan
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
- Chemistry
Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
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12
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Pickup OJS, Khazal I, Smith EJ, Whitwood AC, Lynam JM, Bolaky K, King TC, Rawe BW, Fey N. Computational Discovery of Stable Transition-Metal Vinylidene Complexes. Organometallics 2014. [DOI: 10.1021/om500114u] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Iman Khazal
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Elizabeth J. Smith
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Adrian C. Whitwood
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Jason M. Lynam
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Keshan Bolaky
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Timothy C. King
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Benjamin W. Rawe
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Natalie Fey
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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13
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Ciancaleoni G, Rampino S, Zuccaccia D, Tarantelli F, Belanzoni P, Belpassi L. An ab Initio Benchmark and DFT Validation Study on Gold(I)-Catalyzed Hydroamination of Alkynes. J Chem Theory Comput 2014; 10:1021-34. [PMID: 26580180 DOI: 10.1021/ct400980w] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
High level ab initio calculations have been carried out on an archetypal gold(I)-catalyzed reaction: hydroamination of ethyne. We studied up to 12 structures of possible gold(I)-coordinated species modeling different intermediates potentially present in a catalytic cycle for the addition of a protic nucleophile to an alkyne. The benchmark is used to evaluate the performances of some popular density functionals for describing geometries and relative energies of stationary points along the reaction profile. Most functionals (including hybrid or meta-hybrid) give accurate structures but large nonsystematic errors (4-12 kcal/mol) along the reaction energy profile. The double hybrid functional B2PLYP outperforms all considered functionals and compares very nicely with our reference ab initio benchmark energies. Moreover, we present an assessment of the accuracy of commonly used approaches to include relativistic effects, such as relativistic effective potentials and a scalar ZORA Hamiltonian, by a comparison with the results obtained using a relativistic all-electron four-component Dirac-Kohn-Sham method. The contribution of nonscalar relativistic effects in gold(I)-catalyzed reactions, as we investigated here, is expected to be on the order of 1 kcal/mol.
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Affiliation(s)
- Gianluca Ciancaleoni
- Istituto di Scienze e Tecnologie Molecolari del CNR c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123, Italy
| | - Sergio Rampino
- Istituto di Scienze e Tecnologie Molecolari del CNR c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123, Italy
| | - Daniele Zuccaccia
- Dipartimento di Chimica, Fisica e Ambiente, Università di Udine , Via Cotonificio 108, I-33100 Udine, Italy
| | - Francesco Tarantelli
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123, Italy
| | - Paola Belanzoni
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123, Italy
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie Molecolari del CNR c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , 06123, Italy
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14
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Lauterbach T, Asiri AM, Hashmi ASK. Organometallic Intermediates of Gold Catalysis. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800976-5.00005-9] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Bistoni G, Belpassi L, Tarantelli F. Disentanglement of Donation and Back-Donation Effects on Experimental Observables: A Case Study of Gold-Ethyne Complexes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305505] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Bistoni G, Belpassi L, Tarantelli F. Disentanglement of Donation and Back-Donation Effects on Experimental Observables: A Case Study of Gold-Ethyne Complexes. Angew Chem Int Ed Engl 2013; 52:11599-602. [DOI: 10.1002/anie.201305505] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Indexed: 12/18/2022]
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17
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Ciancaleoni G, Biasiolo L, Bistoni G, Macchioni A, Tarantelli F, Zuccaccia D, Belpassi L. NHC-Gold-Alkyne Complexes: Influence of the Carbene Backbone on the Ion Pair Structure. Organometallics 2013. [DOI: 10.1021/om4005912] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gianluca Ciancaleoni
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
| | - Luca Biasiolo
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento
di Chimica, Fisica
e Ambiente, Università di Udine,
Via Cotonificio 108, I-33100 Udine, Italy
| | - Giovanni Bistoni
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Francesco Tarantelli
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce
di Sotto 8, I-06123, Perugia,
Italy
| | - Daniele Zuccaccia
- Dipartimento
di Chimica, Fisica
e Ambiente, Università di Udine,
Via Cotonificio 108, I-33100 Udine, Italy
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie
Molecolari del CNR (CNR-ISTM), c/o Dipartimento di Chimica, Università degli Studi di Perugia, I-06123,
Perugia, Italy
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18
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Ghebreghiorgis T, Kirk BH, Aponick A, Ess DH. Multiple Mechanisms in Pd(II)-Catalyzed SN2′ Reactions of Allylic Alcohols. J Org Chem 2013; 78:7664-73. [DOI: 10.1021/jo4012283] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Thomas Ghebreghiorgis
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Brian H. Kirk
- Department of Chemistry and
Biochemistry, Brigham Young University,
Provo, Utah 84602, United States
| | - Aaron Aponick
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Daniel H. Ess
- Department of Chemistry and
Biochemistry, Brigham Young University,
Provo, Utah 84602, United States
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19
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Zuccaccia D, Belpassi L, Macchioni A, Tarantelli F. Ligand Effects on Bonding and Ion Pairing in Cationic Gold(I) Catalysts Bearing Unsaturated Hydrocarbons. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300285] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Das A, Dash C, Celik MA, Yousufuddin M, Frenking G, Dias HVR. Tris(alkyne) and Bis(alkyne) Complexes of Coinage Metals: Synthesis and Characterization of (cyclooctyne)3M+ (M = Cu, Ag) and (cyclooctyne)2Au+ and Coinage Metal (M = Cu, Ag, Au) Family Group Trends. Organometallics 2013. [DOI: 10.1021/om400073a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Animesh Das
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Chandrakanta Dash
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Mehmet Ali Celik
- Fachbereich Chemie, Philipps-Universität Marburg,
D-35039 Marburg, Germany
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg,
D-35039 Marburg, Germany
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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21
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Ciancaleoni G, Belpassi L, Tarantelli F, Zuccaccia D, Macchioni A. A combined NMR/DFT study on the ion pair structure of [(PR12R2)Au(η2-3-hexyne)]BF4complexes. Dalton Trans 2013; 42:4122-31. [DOI: 10.1039/c2dt32260a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Celik MA, Dash C, Adiraju VAK, Das A, Yousufuddin M, Frenking G, Dias HVR. End-On and Side-On π-Acid Ligand Adducts of Gold(I): Carbonyl, Cyanide, Isocyanide, and Cyclooctyne Gold(I) Complexes Supported by N-Heterocyclic Carbenes and Phosphines. Inorg Chem 2012; 52:729-42. [DOI: 10.1021/ic301869v] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mehmet Ali Celik
- Fachbereich
Chemie, Philipps-Universität Marburg, D-35039 Marburg, Germany
| | - Chandrakanta Dash
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Venkata A. K. Adiraju
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Animesh Das
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Gernot Frenking
- Fachbereich
Chemie, Philipps-Universität Marburg, D-35039 Marburg, Germany
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
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23
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Ghebreghiorgis T, Biannic B, Kirk BH, Ess DH, Aponick A. The Importance of Hydrogen Bonding to Stereoselectivity and Catalyst Turnover in Gold-Catalyzed Cyclization of Monoallylic Diols. J Am Chem Soc 2012; 134:16307-18. [DOI: 10.1021/ja306333a] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Thomas Ghebreghiorgis
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Berenger Biannic
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Brian H. Kirk
- Department
of Chemistry and
Biochemistry, Brigham Young University,
Provo, Utah 84602, United States
| | - Daniel H. Ess
- Department
of Chemistry and
Biochemistry, Brigham Young University,
Provo, Utah 84602, United States
| | - Aaron Aponick
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
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24
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Das A, Dash C, Yousufuddin M, Celik MA, Frenking G, Dias HVR. Isolable Tris(alkyne) and Bis(alkyne) Complexes of Gold(I). Angew Chem Int Ed Engl 2012; 51:3940-3. [DOI: 10.1002/anie.201200080] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Indexed: 11/05/2022]
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25
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Das A, Dash C, Yousufuddin M, Celik MA, Frenking G, Dias HVR. Isolable Tris(alkyne) and Bis(alkyne) Complexes of Gold(I). Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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26
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Ni QL, Jiang XF, Huang TH, Wang XJ, Gui LC, Yang KG. Gold(I) Chloride Complexes of Polyphosphine Ligands with Electron-Rich Arene Spacer: Gold–Arene Interactions. Organometallics 2012. [DOI: 10.1021/om201276w] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qing-Ling Ni
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Xuan-Feng Jiang
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Ting-Hong Huang
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Xiu-Jian Wang
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Liu-Cheng Gui
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Kun-Guo Yang
- Key Laboratory for the Chemistry and Molecular Engineering
of Medicinal Resources (Ministry of Education of China), School of
Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China
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27
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Okamoto K, Omoto Y, Sano H, Ohe K. Alkyne-coordinating tridentate ligands: structural properties and reactivity of their rhodium complexes. Dalton Trans 2012; 41:10926-9. [DOI: 10.1039/c2dt31322g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Brown TJ, Widenhoefer RA. Cationic Gold(I) π-Complexes of Terminal Alkynes and Their Conversion to Dinuclear σ,π-Acetylide Complexes. Organometallics 2011. [DOI: 10.1021/om200840g] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Timothy J. Brown
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346,
United States
| | - Ross A. Widenhoefer
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346,
United States
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29
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Tkatchouk E, Mankad NP, Benitez D, Goddard WA, Toste FD. Two metals are better than one in the gold catalyzed oxidative heteroarylation of alkenes. J Am Chem Soc 2011; 133:14293-300. [PMID: 21861448 PMCID: PMC3168709 DOI: 10.1021/ja2012627] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a detailed study of the mechanism for oxidative heteroarylation, based on DFT calculations and experimental observations. We propose binuclear Au(II)-Au(II) complexes to be key intermediates in the mechanism for gold catalyzed oxidative heteroarylation. The reaction is thought to proceed via a gold redox cycle involving initial oxidation of Au(I) to binuclear Au(II)-Au(II) complexes by Selectfluor, followed by heteroauration and reductive elimination. While it is tempting to invoke a transmetalation/reductive elimination mechanism similar to that proposed for other transition metal complexes, experimental and DFT studies suggest that the key C-C bond forming reaction occurs via a bimolecular reductive elimination process (devoid of transmetalation). In addition, the stereochemistry of the elimination step was determined experimentally to proceed with complete retention. Ligand and halide effects played an important role in the development and optimization of the catalyst; our data provides an explanation for the ligand effects observed experimentally, useful for future catalyst development. Cyclic voltammetry data is presented that supports redox synergy of the Au···Au aurophilic interaction. The monometallic reductive elimination from mononuclear Au(III) complexes is also studied from which we can predict a ~15 kcal/mol advantage for bimetallic reductive elimination.
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30
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Aubert C, Fensterbank L, Garcia P, Malacria M, Simonneau A. Transition Metal Catalyzed Cycloisomerizations of 1,n-Allenynes and -Allenenes. Chem Rev 2011; 111:1954-93. [PMID: 21391568 DOI: 10.1021/cr100376w] [Citation(s) in RCA: 554] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Corinne Aubert
- Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 place Jussieu, C. 229, 75005 Paris, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 place Jussieu, C. 229, 75005 Paris, France
| | - Pierre Garcia
- Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 place Jussieu, C. 229, 75005 Paris, France
| | - Max Malacria
- Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 place Jussieu, C. 229, 75005 Paris, France
| | - Antoine Simonneau
- Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 place Jussieu, C. 229, 75005 Paris, France
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31
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Brown TJ, Widenhoefer RA. Synthesis and equilibrium binding studies of cationic, two-coordinate gold(I) π-alkyne complexes. J Organomet Chem 2011; 696. [PMID: 24265509 DOI: 10.1016/j.jorganchem.2010.09.055] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Reaction of a 1:1 mixture of (L)AuCl [L = P(t-Bu)2o-biphenyl or IPr] and AgSbF6 with internal alkynes led to isolation of the corresponding cationic, two-coordinate gold π-alkyne complexes in ≥ 90% yield. Equilibrium binding studies show that the binding affinities of alkynes to gold(I) are strongly affected by the electron density of the alkyne and to a lesser extent on the steric bulk of the alkyne. These substituent effects on alkyne binding affinity are greater than are the differences between the inherent binding affinities of alkynes and alkenes to gold(I).
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Affiliation(s)
- Timothy J Brown
- Department of Chemistry, French Family Science Center, Duke University, Durham, NC 27708-0346, USA
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32
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Soriano E, Marco-Contelles J. Structure, Bonding, and Reactivity of Reactant Complexes and Key Intermediates. Top Curr Chem (Cham) 2011; 302:1-29. [DOI: 10.1007/128_2010_115] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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33
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Dash C, Kroll P, Yousufuddin M, Dias HVR. Isolable, gold carbonyl complexes supported by N-heterocyclic carbenes. Chem Commun (Camb) 2011; 47:4478-80. [DOI: 10.1039/c1cc10622h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Salvi N, Belpassi L, Zuccaccia D, Tarantelli F, Macchioni A. Ion pairing in NHC gold(I) olefin complexes: A combined experimental/theoretical study. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.08.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Hashmi A. Homogene Gold-Katalyse jenseits von Vermutungen und Annahmen - charakterisierte Intermediate. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200907078] [Citation(s) in RCA: 470] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Homogeneous Gold Catalysis Beyond Assumptions and Proposals-Characterized Intermediates. Angew Chem Int Ed Engl 2010; 49:5232-41. [DOI: 10.1002/anie.200907078] [Citation(s) in RCA: 1015] [Impact Index Per Article: 72.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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37
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Hooper TN, Green M, Russell CA. Cationic Au(i) alkyne complexes: synthesis, structure and reactivity. Chem Commun (Camb) 2010; 46:2313-5. [DOI: 10.1039/b923900f] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Fortman GC, Poater A, Levell JW, Gaillard S, Slawin AMZ, Samuel IDW, Cavallo L, Nolan SP. A versatile gold synthon for acetylene C–H bond activation. Dalton Trans 2010; 39:10382-90. [DOI: 10.1039/c0dt00276c] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Schmidbaur H, Schier A. Gold η2-Coordination to Unsaturated and Aromatic Hydrocarbons: The Key Step in Gold-Catalyzed Organic Transformations. Organometallics 2009. [DOI: 10.1021/om900900u] [Citation(s) in RCA: 254] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hubert Schmidbaur
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Annette Schier
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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40
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Dias HVR, Flores JA, Wu J, Kroll P. Monomeric copper(I), silver(I), and gold(I) alkyne complexes and the coinage metal family group trends. J Am Chem Soc 2009; 131:11249-55. [PMID: 19610646 DOI: 10.1021/ja904232v] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of thermally stable, easily isolable, monomeric, and isoleptic coinage metal alkyne complexes have been reported. Treatment of [N{(C(3)F(7))C(Dipp)N}(2)]Li (the lithium salt of the 1,3,5-triazapentadiene [N{(C(3)F(7))C(Dipp)N}(2)]H) with AuCl, CF(3)SO(3)Ag or CF(3)SO(3)Cu in the presence of 3-hexyne led to the corresponding coinage metal alkyne complex [N{(C(3)F(7))C(Dipp)N}(2)]M(EtC[triple bond]CEt) in good yield (M = Au, Ag, Cu; Dipp = 2,6-diisopropylphenyl). X-ray crystal structures of the three coinage metal alkynes are remarkably similar, and show the presence of trigonal-planar metal sites with eta(2)-bonded 3-hexyne. The M-C and M-N bond distances vary in the order Cu < Au < Ag. The bending of the C-C[triple bond]C bond angle is largest for the gold, followed by Cu and Ag adducts. The gold adduct also shows the largest decrease in C[triple bond]C stretching frequency in Raman, while the Ag adduct shows the smallest change compared to that of the uncoordinated alkyne. DFT calculations on [N{(CF(3))C(Ph)N}(2)]M(EtC[triple bond]CEt) and the related ClM(EtC[triple bond]CEt) predict that the M-alkyne bond energy varies in the order Ag < Cu < Au. The gold adducts are also predicted to have the longest C[triple bond]C, largest deviation of C-C[triple bond]C bond angle from linearity, and smallest C[triple bond]C stretching frequency, followed by the Cu and Ag adducts. In these triazapentadienyl coinage metal adducts, the sigma-donation from alkyne --> M dominates over the M --> alkyne pi-back-donation.
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Affiliation(s)
- H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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41
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Sato T, Nakamura I, Terada M. Platinum-Catalyzed Multisubstituted Benzo[b]selenophene Synthesis. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900894] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Wang KP, Yun SY, Lee D, Wink DJ. Structure and reactivity of alkyne-chelated ruthenium alkylidene complexes. J Am Chem Soc 2009; 131:15114-5. [PMID: 19799424 PMCID: PMC2830144 DOI: 10.1021/ja907155r] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The isolation and structural characterization of alkyne-bound Ru alkylidene complexes has been elusive. However, a sequential enyne ring-closing metathesis of a diyne moiety and metallotropic [1,3]-shift followed by a second enyne ring-closing metathesis allowed the formation of a highly stable alkyne-chelated ruthenium complex. The full characterization of this complex was realized by NMR spectroscopy and X-ray crystallography.
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Affiliation(s)
- Kung-Pern Wang
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
| | - Sang Young Yun
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
| | - Donald J. Wink
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
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43
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Baumgarten S, Lesage D, Gandon V, Goddard JP, Malacria M, Tabet JC, Gimbert Y, Fensterbank L. The Role of Water in Platinum-Catalyzed Cycloisomerization of 1,6-Enynes: A Combined Experimental and Theoretical Gas Phase Study. ChemCatChem 2009. [DOI: 10.1002/cctc.200900003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Flügge S, Anoop A, Goddard R, Thiel W, Fürstner A. Structure and Bonding in Neutral and Cationic 14-Electron Gold Alkyne π Complexes. Chemistry 2009; 15:8558-8565. [DOI: 10.1002/chem.200901062] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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45
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Brown TJ, Dickens MG, Widenhoefer RA. Syntheses, X-ray crystal structures, and solution behavior of monomeric, cationic, two-coordinate gold(I) pi-alkene complexes. J Am Chem Soc 2009; 131:6350-1. [PMID: 19368391 DOI: 10.1021/ja9015827] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of a suspension of (IPr)AuCl [IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidine] and AgSbF(6) (1:1) with isobutylene at room temperature for 12 h led to isolation of [(NHC)Au(eta(2)-H(2)C=CMe(2))](+) SbF(6)(-) (1a) in 98% yield, which was characterized by spectroscopy and X-ray crystallography. A number of cationic gold pi-alkene complexes were isolated employing a procedure similar to that used to isolate 1a, two of which were analyzed by X-ray crystallography. Spectroscopy, X-ray crystallography, and alkene binding studies were in accord with a gold-(pi-alkene) interaction dominated by sigma-donation from the alkene to gold.
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Affiliation(s)
- Timothy J Brown
- French Family Science Center, Duke University, Durham, North Carolina 27708-0346, USA
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46
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Gao L, Partyka DV, Updegraff JB, Deligonul N, Gray TG. Synthesis, Structures, and Excited-State Geometries of Alkynylgold(I) Complexes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900307] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Brown TJ, Dickens MG, Widenhoefer RA. Syntheses and X-ray crystal structures of cationic, two-coordinate gold(i) π-alkene complexes that contain a sterically hindered o-biphenylphosphine ligand. Chem Commun (Camb) 2009:6451-3. [DOI: 10.1039/b914632f] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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