1
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Navarro M, Holzapfel M, Campos J. A Cavity-Shaped Gold(I) Fragment Enables CO 2 Insertion into Au-OH and Au-NH Bonds. Inorg Chem 2023. [PMID: 37367828 DOI: 10.1021/acs.inorgchem.3c00751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
A cavity-shaped linear gold(I) hydroxide complex acts as a platform to access unusual gold monomeric species. Notably, this sterically crowded gold fragment enables the trapping of CO2 via insertion into Au-OH and Au-NH bonds to form unprecedented monomeric gold(I) carbonate and carbamate complexes. In addition, we succeeded in the identification of the first gold(I) terminal hydride bearing a phosphine ligand. The basic nature of the Au(I)-hydroxide moiety is also explored through the reactivity toward other molecules containing acidic protons such as trifluoromethanesulfonic acid and terminal alkynes.
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Affiliation(s)
- Miquel Navarro
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Sevilla 41092, Spain
| | - Markus Holzapfel
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Sevilla 41092, Spain
| | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Sevilla 41092, Spain
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2
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Tang L, Luo Y, Ma X, Wang B, Ding M, Wang R, Wang P, Pei Y, Wang S. Poly-Hydride [Au I 7 (PPh 3 ) 7 H 5 ](SbF 6 ) 2 cluster complex: Structure, Transformation, and Electrocatalytic CO 2 Reduction Properties. Angew Chem Int Ed Engl 2023; 62:e202300553. [PMID: 36655888 DOI: 10.1002/anie.202300553] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/20/2023]
Abstract
Hydride AuI bonds are labile due to the mismatch in electric potential of an oxidizing metal and reducing ligand, and therefore the structure and structure-activity relationships of nanoclusters that contain them are seldom studied. Herein, we report the synthesis and characterization of [Au7 (PPh3 )7 H5 ](SbF6 )2 (abbrev. Au7 H5 2+ ), an Au cluster complex containing five hydride ligands, which decomposed to give [Au8 (PPh3 )7 ]2+ (abbrev. Au8 2+ ) upon exposure to light (300 to 450 nm). The valence state of AuI and H- was verified by density functional theory (DFT) calculations, NMR, UV/Vis and XPS. The two nanoclusters behaved differently in the electrocatalytic CO2 reduction reaction (CO2 RR): Au7 H5 2+ exhibited 98.2 % selectivity for H2 , whereas Au8 2+ was selective for CO (73.5 %). Further DFT calculations showed that the H- ligand inhibited the CO2 RR process compared with the electron-donor H.
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Affiliation(s)
- Li Tang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Yuting Luo
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan, Hunan, 411105, P. R. China
| | - Xiaoshuang Ma
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Bin Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Mei Ding
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Ru Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Pu Wang
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan, Hunan, 411105, P. R. China
| | - Yong Pei
- Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan, Hunan, 411105, P. R. China
| | - Shuxin Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
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3
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Sorbelli D, Belpassi L, Belanzoni P. Mechanistic Study of Alkyne Insertion into Cu-Al and Au-Al Bonds: A Paradigm Shift for Coinage Metal Chemistry. Inorg Chem 2022; 61:21095-21106. [PMID: 36493466 PMCID: PMC9795551 DOI: 10.1021/acs.inorgchem.2c03713] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, the mechanism of the insertion reaction of 3-hexyne into Cu-Al and Au-Al bonds in M-aluminyl (M = Cu, Au) complexes is computationally elucidated. The mechanism is found to be radical-like, with the Cu-Al and Au-Al bonds acting as nucleophiles toward the alkyne, and predicts a less efficient reactivity for the gold-aluminyl complex. The proposed mechanism well rationalizes the kinetic (or thermodynamic) control on the formation of the syn (or anti) insertion product into the Cu-Al bond (i.e., dimetallated alkene) which has been recently reported. A comparative analysis of the electronic structure reveals that the reduced reactivity at the gold site─usually showing higher efficiency than copper as a "standard" electrophile in alkyne activation─arises from a common feature, i.e., the highly stable 6s Au orbital. The relativistic lowering of the 6s orbital, making it more suitable for accepting electron density and thus enhancing the electrophilicity of gold complexes, in the gold-aluminyl system is responsible for a less nucleophilic Au-Al bond and, consequently, a less efficient alkyne insertion. These findings demonstrate that the unconventional electronic structure and the electron-sharing nature of the M-Al bond induce a paradigm shift in the properties of coinage metal complexes. In particular, the peculiar radical-like reactivity, previously shown also with carbon dioxide, suggests that these complexes might efficiently insert/activate other small molecules, opening new and unexplored paths for their reactivity.
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Affiliation(s)
- Diego Sorbelli
- Department
of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy,CNR
Institute of Chemical Science and Technologies ″Giulio Natta″
(CNR-SCITEC), Via Elce di Sotto, 8-06123 Perugia, Italy,
| | - Leonardo Belpassi
- CNR
Institute of Chemical Science and Technologies ″Giulio Natta″
(CNR-SCITEC), Via Elce di Sotto, 8-06123 Perugia, Italy,
| | - Paola Belanzoni
- Department
of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto, 8-06123 Perugia, Italy,CNR
Institute of Chemical Science and Technologies ″Giulio Natta″
(CNR-SCITEC), Via Elce di Sotto, 8-06123 Perugia, Italy,
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4
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Das M, Gogoi AR, Sunoj RB. Molecular Insights on Solvent Effects in Organic Reactions as Obtained through Computational Chemistry Tools. J Org Chem 2021; 87:1630-1640. [PMID: 34752092 DOI: 10.1021/acs.joc.1c02222] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Molecular understanding of the role of protic solvents in a gamut of organic transformations can be developed using density functional and ab initio computational studies focused on the reaction mechanism. Inclusion of explicit solvent molecules in the vital TSs has been proven to be valuable toward improving the energetic estimates of organocatalytic as well as transition-metal-catalyzed organic reactions. Herein, we provide an overview of the importance of an explicit-implicit solvation model using a number of interesting examples.
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Affiliation(s)
- Manajit Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Achyut Ranjan Gogoi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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5
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Dhara D, Scheschkewitz D, Chandrasekhar V, Yildiz CB, Jana A. Reactivity of NHC/diphosphene-coordinated Au(I)-hydride. Chem Commun (Camb) 2021; 57:809-812. [PMID: 33367425 DOI: 10.1039/d0cc05461e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report the reactivity of isolable Au(i)-hydride stabilized by an NHC-coordinated diphosphene towards substrates containing C-C and N-N multiple bonds (NHC = N-heterocyclcic carbene). Reactions with dimethyl acetylenedicarboxylate and azobenzene lead to a trans-addition of the Au(i)-H across the C-C triple bond and the N-N double bond, respectively. In contrast, the reaction with ethyl diazoacetate affords a gold(i)-hydrazonide as the 1,1-addition product to the terminal nitrogen atom. With phenyl acetylene, the corresponding Au(i)-alkynyl complex is obtained under the elimination of dihydrogen. Strikingly, diphosphene-containing Au(i)-hydride is more reactive - affording different products in some cases - than a related NHC-stabilized Au(i)-hydride without the mediating diphosphene moiety.
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Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - David Scheschkewitz
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India. and Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Cem B Yildiz
- Department of Medicinal and Aromatic Plants, University of Aksaray, Aksaray, Turkey.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
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6
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Besora M, Maseras F. Computational insights into metal-catalyzed asymmetric hydrogenation. ADVANCES IN CATALYSIS 2021. [DOI: 10.1016/bs.acat.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Hidalgo N, Moreno JJ, Pérez-Jiménez M, Maya C, López-Serrano J, Campos J. Evidence for Genuine Bimetallic Frustrated Lewis Pair Activation of Dihydrogen with Gold(I)/Platinum(0) Systems. Chemistry 2020; 26:5982-5993. [PMID: 31971290 DOI: 10.1002/chem.201905793] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/22/2020] [Indexed: 01/07/2023]
Abstract
A joint experimental/computational effort to elucidate the mechanism of dihydrogen activation by a gold(I)/platinum(0) metal-only frustrated Lewis pair (FLP) is described herein. The drastic effects on H2 activation derived from subtle ligand modifications have also been investigated. The importance of the balance between bimetallic adduct formation and complete frustration has been interrogated, providing for the first time evidence for genuine metal-only FLP reactivity in solution. The origin of a strong inverse kinetic isotopic effect has also been clarified, offering further support for the proposed bimetallic FLP-type cleavage of dihydrogen.
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Affiliation(s)
- Nereida Hidalgo
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Juan José Moreno
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Marina Pérez-Jiménez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
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8
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Negoi A, Cojocaru B, Parvulescu VI, Imlyhen N, Gouygou M. Batch versus flow stereoselective hydrogenation of α-acetamido-cinnamic acid catalyzed by an Au(I) complex. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Rocchigiani L, Budzelaar PHM, Bochmann M. Heterolytic bond activation at gold: evidence for gold(iii) H-B, H-Si complexes, H-H and H-C cleavage. Chem Sci 2019; 10:2633-2642. [PMID: 30996979 PMCID: PMC6425858 DOI: 10.1039/c8sc05229h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 01/15/2019] [Indexed: 11/21/2022] Open
Abstract
The coordinatively unsaturated gold(iii) chelate complex [(C^N-CH)Au(C6F5)]+ (1 +) reacts with main group hydrides H-BPin and H-SiEt3 in dichloromethane solution at -70 °C to form the corresponding σ-complexes, which were spectroscopically characterized (C^N-CH = 2-(C6H3Bu t )-6-(C6H4Bu t )pyridine anion; Pin = OCMe2CMe2O). In the presence of an external base such as diethyl ether, heterolytic cleavage of the silane H-Si bond leads to the gold hydrides [{(C^N-CH)AuC6F5}2(μ-H)]+ (2 +) and (C^N-CH)AuH(C6F5) (5), together with spectroscopically detected [Et3Si-OEt2]+. The activation of dihydrogen also involves heterolytic H-H bond cleavage but requires a higher temperature (-20 °C). H2 activation proceeds in two mechanistically distinct steps: the first leading to 2 plus [H(OEt2)2]+, the second to protonation of one of the C^N pyridine ligands and reductive elimination of C6F5H. By comparison, formation of gold hydrides by cleavage of suitably activated C-H bonds is very much more facile; e.g. the reaction of 1·OEt2 with Hantzsch ester is essentially instantaneous and quantitative at -30 °C. This is the first experimental observation of species involved in the initial steps of gold catalyzed hydroboration, hydrosilylation and hydrogenation and the first demonstration of the ability of organic C-H bonds to act as hydride donors towards gold.
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Affiliation(s)
- Luca Rocchigiani
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich NR4 7TJ , UK . ;
| | - Peter H M Budzelaar
- Department of Chemistry , University of Naples Federico II , Via Cintia , 80126 Naples , Italy .
| | - Manfred Bochmann
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich NR4 7TJ , UK . ;
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10
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Chen H, Fang S, Wang J, Wei H. Nitrido complex of high-valent Ru(VI) -catalyzed reduction of imines and alkynes with hydrosilanes: A theoretical study of the reaction mechanism. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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Fiorio JL, Gonçalves RV, Teixeira-Neto E, Ortuño MA, López N, Rossi LM. Accessing Frustrated Lewis Pair Chemistry through Robust Gold@N-Doped Carbon for Selective Hydrogenation of Alkynes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00806] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jhonatan Luiz Fiorio
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, São Paulo, Brazil
| | - Renato Vitalino Gonçalves
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, São Paulo Brazil
| | - Erico Teixeira-Neto
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, São Paulo, Brazil
| | - Manuel A. Ortuño
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Núria López
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Liane Marcia Rossi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, São Paulo, Brazil
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12
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Fang S, Chen H, Wang W, Wei H. Mechanistic insights into the catalytic carbonyl hydrosilylation by cationic [CpM(CO)2(IMes)]+ (M = Mo, W) complexes: the intermediacy of η1-H(Si) metal complexes. NEW J CHEM 2018. [DOI: 10.1039/c7nj03856a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ionic SN2-type mechanistic pathway initiated by silane end-on coordination on the metal centers, forming η1-H(Si) Mo/W complexes, is the preferred reaction pathway for the two cationic cyclopentadienyl molybdenum/tungsten complexes, [CpM(CO)2(IMes)]+ (M = Mo, W) in catalyzing carbonyl hydrosilylation.
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Affiliation(s)
- Shaoqin Fang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Provincial Key Laboratory for NSLSCS
- Jiangsu Key Laboratory of Biomedical Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
| | - Hongcai Chen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Provincial Key Laboratory for NSLSCS
- Jiangsu Key Laboratory of Biomedical Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
| | - Wenmin Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Provincial Key Laboratory for NSLSCS
- Jiangsu Key Laboratory of Biomedical Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
| | - Haiyan Wei
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
- Jiangsu Provincial Key Laboratory for NSLSCS
- Jiangsu Key Laboratory of Biomedical Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
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13
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Praveen CS, Comas-Vives A, Copéret C, VandeVondele J. Role of Water, CO2, and Noninnocent Ligands in the CO2 Hydrogenation to Formate by an Ir(III) PNP Pincer Catalyst Evaluated by Static-DFT and ab Initio Molecular Dynamics under Reaction Conditions. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00761] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. S. Praveen
- Nanoscale
Simulations, Department of Materials, ETH Zurich Wolfgang-Pauli-Straße 27, 8093 Zurich, Switzerland
- Department
of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Aleix Comas-Vives
- Department
of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - J. VandeVondele
- Nanoscale
Simulations, Department of Materials, ETH Zurich Wolfgang-Pauli-Straße 27, 8093 Zurich, Switzerland
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14
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Cukrowski I, de Lange JH, Groenewald F, Raubenheimer HG. Gold(I) Hydrides as Proton Acceptors in Dihydrogen Bond Formation. Chemphyschem 2017; 18:2288-2294. [PMID: 28544420 DOI: 10.1002/cphc.201700383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/19/2017] [Indexed: 11/10/2022]
Abstract
Wavefunction and DFT calculations indicate that anionic dihydride complexes of AuI form strong to moderate directed Au-H⋅⋅⋅H bonds with one or two HF, H2 O and NH3 prototype proton donor molecules. The largely electrostatic interaction is influenced by relativistic effects which, however, do not increase the binding energy. Very weak Au⋅⋅⋅H associations-exhibiting a corresponding bond path-occur between neutral AuH and HF units, although ultimately F becomes the preferred donor atom in the most stable structure. Increasing the hydridicity of AuH by attachment of an electron donating NHC ligand effects Au-H⋅⋅⋅H bonding of moderate strength only with HF, whereas competing Au⋅⋅⋅H interactions dominate for H2 O and NH3 . Rare η2 coordinated and HX (X=F or OH) associated H2 complexes are produced during interaction with a single ion of stronger acidity, H2 F+ or H3 O+ . Theoretically, reaction of excess [AuH2 ]- as proton acceptor with H3 O+ or NH4+ in 3:1 or 4:1 ionic ratios, respectively, affords H⋅⋅⋅H bonded analogues of Eigen-type adducts. Outstanding analytical relationships between selected bonding parameters support the integrity of the results.
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Affiliation(s)
- Ignacy Cukrowski
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, 0002, South Africa
| | - Jurgens H de Lange
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, 0002, South Africa
| | - Ferdinand Groenewald
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Helgard G Raubenheimer
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
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15
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Hicken A, White AJP, Crimmin MR. Reversible Coordination of Boron–, Aluminum–, Zinc–, Magnesium–, and Calcium–Hydrogen Bonds to Bent {CuL2} Fragments: Heavy σ Complexes of the Lightest Coinage Metal. Inorg Chem 2017; 56:8669-8682. [DOI: 10.1021/acs.inorgchem.7b00182] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Alexandra Hicken
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Andrew J. P. White
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Mark R. Crimmin
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
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16
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Wang R, Fan H. The mechanism of H2 and H2O desorption from bridging hydroxyls of a TiO2(110) surface. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02007k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With an increase in BBO vacancies (created by H2O desorption), the H2 desorption barrier decreases, while the H2O desorption barrier increases.
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Affiliation(s)
- Ruimin Wang
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Hongjun Fan
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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17
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Gaggioli CA, Belpassi L, Tarantelli F, Zuccaccia D, Harvey JN, Belanzoni P. Dioxygen insertion into the gold(i)-hydride bond: spin orbit coupling effects in the spotlight for oxidative addition. Chem Sci 2016; 7:7034-7039. [PMID: 30996862 PMCID: PMC6413884 DOI: 10.1039/c6sc02161a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/22/2016] [Indexed: 11/21/2022] Open
Abstract
O2 insertion into a Au(i)-H bond occurs through an oxidative addition/recombination mechanism, showing peculiar differences with respect to Pd(ii)-H, for which O2 insertion takes place through a hydrogen abstraction mechanism in the triplet potential energy surface with a pure spin transition state. We demonstrate that the spin-forbidden Au(i)-hydride O2 insertion reaction can only be described accurately by inclusion of spin orbit coupling (SOC) effects. We further find that a new mechanism involving two O2 molecules is also feasible, and this result, together with the unexpectedly high experimental entropic activation parameter, suggests the possibility that a third species could be involved in the rate determining step of the reaction. Finally, we show that the O2 oxidative addition into a Au(i)-alkyl (CH3) bond also occurs but the following recombination process using O2 is unfeasible and the metastable intermediate Au(iii) species will revert to reactants, thus accounting for the experimental inertness of Au-alkyl complexes toward oxygen, as frequently observed in catalytic applications. We believe that this study can pave the way for further theoretical and experimental investigations in the field of Au(i)/Au(iii) oxidation reactions, including ligand, additive and solvent effects.
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Affiliation(s)
- Carlo Alberto Gaggioli
- Department of Chemistry , Biology and Biotechnology , University of Perugia , via Elce di Sotto, 8 , 06123 Perugia , Italy .
| | - Leonardo Belpassi
- Institute of Molecular Science and Technologies (ISTM) - CNR , via Elce di Sotto, 8 , 06123 Perugia , Italy
| | - Francesco Tarantelli
- Department of Chemistry , Biology and Biotechnology , University of Perugia , via Elce di Sotto, 8 , 06123 Perugia , Italy .
- Institute of Molecular Science and Technologies (ISTM) - CNR , via Elce di Sotto, 8 , 06123 Perugia , Italy
| | - Daniele Zuccaccia
- Institute of Molecular Science and Technologies (ISTM) - CNR , via Elce di Sotto, 8 , 06123 Perugia , Italy
- Department of Food , Environmental and Animal Sciences , Section of Chemistry , University of Udine , via Cotonificio, 108 , 33100 Udine , Italy
| | - Jeremy N Harvey
- Department of Chemistry , KU Leuven , Celestijnenlaan 200F, B-3001 Heverlee , Belgium .
| | - Paola Belanzoni
- Department of Chemistry , Biology and Biotechnology , University of Perugia , via Elce di Sotto, 8 , 06123 Perugia , Italy .
- Institute of Molecular Science and Technologies (ISTM) - CNR , via Elce di Sotto, 8 , 06123 Perugia , Italy
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18
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Wang C, Ren XR, Qi CZ, Yu HZ. Mechanistic Study on Gold-Catalyzed Highly Selective Hydroamination of Alkylidenecyclopropanes. J Org Chem 2016; 81:7326-35. [DOI: 10.1021/acs.joc.6b00726] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chen Wang
- Zhejiang
Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Xiao-Rong Ren
- Zhejiang
Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Chen-Ze Qi
- Zhejiang
Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Hai-Zhu Yu
- Department
of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
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19
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Jordan AJ, Lalic G, Sadighi JP. Coinage Metal Hydrides: Synthesis, Characterization, and Reactivity. Chem Rev 2016; 116:8318-72. [PMID: 27454444 DOI: 10.1021/acs.chemrev.6b00366] [Citation(s) in RCA: 295] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hydride complexes of copper, silver, and gold encompass a broad array of structures, and their distinctive reactivity has enabled dramatic recent advances in synthesis and catalysis. This Review summarizes the synthesis, characterization, and key stoichiometric reactions of isolable or observable coinage metal hydrides. It discusses catalytic processes in which coinage metal hydrides are known or probable intermediates, and presents mechanistic studies of selected catalytic reactions. The purpose of this Review is to convey how developments in coinage metal hydride chemistry have led to new organic transformations, and how developments in catalysis have in turn inspired the synthesis of reactive new complexes.
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Affiliation(s)
- Abraham J Jordan
- School of Chemistry & Biochemistry, Georgia Institute of Technology , 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Gojko Lalic
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
| | - Joseph P Sadighi
- School of Chemistry & Biochemistry, Georgia Institute of Technology , 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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20
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Abstract
Transition metal hydride complexes are usually amphoteric, not only acting as hydride donors, but also as Brønsted-Lowry acids. A simple additive ligand acidity constant equation (LAC for short) allows the estimation of the acid dissociation constant Ka(LAC) of diamagnetic transition metal hydride and dihydrogen complexes. It is remarkably successful in systematizing diverse reports of over 450 reactions of acids with metal complexes and bases with metal hydrides and dihydrogen complexes, including catalytic cycles where these reactions are proposed or observed. There are links between pKa(LAC) and pKa(THF), pKa(DCM), pKa(MeCN) for neutral and cationic acids. For the groups from chromium to nickel, tables are provided that order the acidity of metal hydride and dihydrogen complexes from most acidic (pKa(LAC) -18) to least acidic (pKa(LAC) 50). Figures are constructed showing metal acids above the solvent pKa scales and organic acids below to summarize a large amount of information. Acid-base features are analyzed for catalysts from chromium to gold for ionic hydrogenations, bifunctional catalysts for hydrogen oxidation and evolution electrocatalysis, H/D exchange, olefin hydrogenation and isomerization, hydrogenation of ketones, aldehydes, imines, and carbon dioxide, hydrogenases and their model complexes, and palladium catalysts with hydride intermediates.
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Affiliation(s)
- Robert H Morris
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
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21
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Gholinejad M, Ahmadi J, Nájera C. Silica Microparticles Supported Gold and Copper Ferrite Nanoparticles: A Magnetically Recyclable Bimetallic Catalyst for Sonogashira Reaction. ChemistrySelect 2016. [DOI: 10.1002/slct.201600049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammad Gholinejad
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); P. O. Box 45195-1159, Gavazang Zanjan 45137-6731 Iran
| | - Jahantab Ahmadi
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); P. O. Box 45195-1159, Gavazang Zanjan 45137-6731 Iran
| | - Carmen Nájera
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA).; Universidad de Alicante; Apdo. 99 E-03080- Alicante Spain
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22
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Investigation on the chemical active sites of copper nanoclusters as nanocatalyst for the adsorption of acetylene: calibration of DFT method and basis set. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1806-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Rekhroukh F, Estévez L, Bijani C, Miqueu K, Amgoune A, Bourissou D. Experimental and Theoretical Evidence for an Agostic Interaction in a Gold(III) Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511111] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Feriel Rekhroukh
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Laura Estévez
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (UMR 5254), Equipe Chimie Physique; Université de Pau et des Pays de l'Adour, Hélioparc; 2 Avenue du Président Angot 64053 Pau Cedex 09 France
- Departamento de Química Física; Universidade de Vigo, Facultade de Química Lagoas-Marcosende s/n; 36310 Vigo, Galicia Spain
| | - Christian Bijani
- Laboratoire de Chimie de Coordination (CNRS UPR 8241); 205 Route de Narbonne 31077 Toulouse France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (UMR 5254), Equipe Chimie Physique; Université de Pau et des Pays de l'Adour, Hélioparc; 2 Avenue du Président Angot 64053 Pau Cedex 09 France
| | - Abderrahmane Amgoune
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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24
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Rekhroukh F, Estévez L, Bijani C, Miqueu K, Amgoune A, Bourissou D. Experimental and Theoretical Evidence for an Agostic Interaction in a Gold(III) Complex. Angew Chem Int Ed Engl 2016; 55:3414-8. [DOI: 10.1002/anie.201511111] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Indexed: 01/30/2023]
Affiliation(s)
- Feriel Rekhroukh
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Laura Estévez
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (UMR 5254), Equipe Chimie Physique; Université de Pau et des Pays de l'Adour, Hélioparc; 2 Avenue du Président Angot 64053 Pau Cedex 09 France
- Departamento de Química Física; Universidade de Vigo, Facultade de Química Lagoas-Marcosende s/n; 36310 Vigo, Galicia Spain
| | - Christian Bijani
- Laboratoire de Chimie de Coordination (CNRS UPR 8241); 205 Route de Narbonne 31077 Toulouse France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (UMR 5254), Equipe Chimie Physique; Université de Pau et des Pays de l'Adour, Hélioparc; 2 Avenue du Président Angot 64053 Pau Cedex 09 France
| | - Abderrahmane Amgoune
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée; Université Paul Sabatier/ CNRS UMR 5069; 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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25
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Zhang Q, Zhang ZQ, Fu Y, Yu HZ. Mechanism of the Visible Light-Mediated Gold-Catalyzed Oxyarylation Reaction of Alkenes. ACS Catal 2016. [DOI: 10.1021/acscatal.5b01971] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Qi Zhang
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Department
of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Zhen-Qi Zhang
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yao Fu
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Hai-Zhu Yu
- Department
of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
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26
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Balcells D, Eisenstein O, Tilset M, Nova A. Coordination and insertion of alkenes and alkynes in AuIII complexes: nature of the intermediates from a computational perspective. Dalton Trans 2016; 45:5504-13. [DOI: 10.1039/c5dt05014f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computational studies show how the stability and reactivity of gold(iii) alkene and alkyne complexes depend on the ancillary ligands.
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Affiliation(s)
- David Balcells
- Centre for Theoretical and Computational Chemistry (CTCC) Department of Chemistry
- University of Oslo
- N-0315 Oslo
- Norway
| | - Odile Eisenstein
- Centre for Theoretical and Computational Chemistry (CTCC) Department of Chemistry
- University of Oslo
- N-0315 Oslo
- Norway
- Institut Charles Gerhardt
| | - Mats Tilset
- Centre for Theoretical and Computational Chemistry (CTCC) Department of Chemistry
- University of Oslo
- N-0315 Oslo
- Norway
- Department of Chemistry
| | - Ainara Nova
- Centre for Theoretical and Computational Chemistry (CTCC) Department of Chemistry
- University of Oslo
- N-0315 Oslo
- Norway
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27
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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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28
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Ouyang R, Jiang DE. Understanding Selective Hydrogenation of α,β-Unsaturated Ketones to Unsaturated Alcohols on the Au25(SR)18 Cluster. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01521] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Runhai Ouyang
- Department of Chemistry, University of California, 501 Big
Springs Road, Riverside, California 92521, United States
| | - De-en Jiang
- Department of Chemistry, University of California, 501 Big
Springs Road, Riverside, California 92521, United States
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29
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30
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Wang J, Wang W, Huang L, Yang X, Wei H. The unexpected mechanism underlying the high-valent mono-oxo-rhenium(V) hydride catalyzed hydrosilylation of C=N functionalities: insights from a DFT study. Chemphyschem 2015; 16:1052-60. [PMID: 25703794 DOI: 10.1002/cphc.201402610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Indexed: 12/16/2022]
Abstract
In this study, we theoretically investigated the mechanism underlying the high-valent mono-oxo-rhenium(V) hydride Re(O)HCl2(PPh3)2 (1) catalyzed hydrosilylation of C=N functionalities. Our results suggest that an ionic S(N)2-Si outer-sphere pathway involving the heterolytic cleavage of the Si-H bond competes with the hydride pathway involving the C=N bond inserted into the Re-H bond for the rhenium hydride (1) catalyzed hydrosilylation of the less steric C=N functionalities (phenylmethanimine, PhCH=NH, and N-phenylbenzylideneimine, PhCH=NPh). The rate-determining free-energy barriers for the ionic outer-sphere pathway are calculated to be ∼28.1 and 27.6 kcal mol(-1), respectively. These values are slightly more favorable than those obtained for the hydride pathway (by ∼1-3 kcal mol(-1)), whereas for the large steric C=N functionality of N,1,1-tri(phenyl)methanimine (PhCPh=NPh), the ionic outer-sphere pathway (33.1 kcal mol(-1)) is more favorable than the hydride pathway by as much as 11.5 kcal mol(-1). Along the ionic outer-sphere pathway, neither the multiply bonded oxo ligand nor the inherent hydride moiety participate in the activation of the Si-H bond.
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Affiliation(s)
- Jiandi Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Provincial Key Laboratory for NSLSCS, Nanjing Normal University, Nanjing 210097 (China)
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31
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Rekhroukh F, Brousses R, Amgoune A, Bourissou D. Cationic Gold(III) Alkyl Complexes: Generation, Trapping, and Insertion of Norbornene. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409604] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Rekhroukh F, Brousses R, Amgoune A, Bourissou D. Cationic Gold(III) Alkyl Complexes: Generation, Trapping, and Insertion of Norbornene. Angew Chem Int Ed Engl 2014; 54:1266-9. [DOI: 10.1002/anie.201409604] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Indexed: 11/09/2022]
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33
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Pakiari AH, Pahlavan F. The electronic structures of small Ni(n) (n=2-4) clusters and their interactions with ethylene and triplet oxygen: a theoretical study. Chemphyschem 2014; 15:4055-66. [PMID: 25263214 DOI: 10.1002/cphc.201402467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Indexed: 11/10/2022]
Abstract
Density functional theory (DFT) calculations of small nickel clusters and their interacting systems are carried out using the BLYP and B97-2 methods, after DFT calibration. All bare nickel clusters in this study have high multiplicities and are paramagnetic. Our results for the interactions between ethylene and oxygen with Ni(n) (n=2-4) clusters at different adsorption modes show that for ethylene, π-orientation is preferred, and that oxygen adsorption in a bridge mode is stronger than on-top coordination. Vibrational frequency analysis reveals that the vibrational modes of ethylene π-coordinated to nickel clusters converge toward the corresponding value for surface-bound ethylene, as the cluster size increases from two to four, showing that finite clusters can be used as localized models for ligand adsorption on nickel surfaces. We also calculate DFT global reactivity descriptors, chemical potential and hardness, and use these to predict the relative stability and reactivity of each bare cluster.
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Affiliation(s)
- Ali H Pakiari
- Chemistry Department, College of Science, Shiraz University, Eram square, Eram street 7146713565 Shiraz (Iran).
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34
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Joost M, Estevez L, Mallet-Ladeira S, Miqueu K, Amgoune A, Bourissou D. Mechanisms of syn-Insertion of Alkynes and Allenes into Gold–Silicon Bonds: A Comprehensive Experimental/Theoretical Study. J Am Chem Soc 2014; 136:10373-82. [DOI: 10.1021/ja504024h] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Maximilian Joost
- Université
de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale
Appliquée, 118
route de Narbonne, F-31062 Toulouse, France
- CNRS,
LHFA UMR 5069, F-31062 Toulouse, France
| | - Laura Estevez
- Institut
Pluridisciplinaire de Recherche sur l′Environnement et les
Matériaux (UMR 5254), Equipe Chimie Physique, Université de Pau et des Pays de l′Adour, Hélioparc, 2 Avenue du Président Angot, 64053 Pau cedex 09, France
- Departamento
de Química Física, Universidade de Vigo, Facultade de
Química Lagoas-Marcosende s/n, 36310 Vigo, Galicia, Spain
| | - Sonia Mallet-Ladeira
- Université de Toulouse, UPS, Structure Fédérative
Toulousaine en Chimie Moléculaire, FR2599, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Karinne Miqueu
- Institut
Pluridisciplinaire de Recherche sur l′Environnement et les
Matériaux (UMR 5254), Equipe Chimie Physique, Université de Pau et des Pays de l′Adour, Hélioparc, 2 Avenue du Président Angot, 64053 Pau cedex 09, France
| | - Abderrahmane Amgoune
- Université
de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale
Appliquée, 118
route de Narbonne, F-31062 Toulouse, France
- CNRS,
LHFA UMR 5069, F-31062 Toulouse, France
| | - Didier Bourissou
- Université
de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale
Appliquée, 118
route de Narbonne, F-31062 Toulouse, France
- CNRS,
LHFA UMR 5069, F-31062 Toulouse, France
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35
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Langseth E, Nova A, Tråseth EA, Rise F, Øien S, Heyn RH, Tilset M. A Gold Exchange: A Mechanistic Study of a Reversible, Formal Ethylene Insertion into a Gold(III)–Oxygen Bond. J Am Chem Soc 2014; 136:10104-15. [DOI: 10.1021/ja504554u] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | | | | | - Richard H. Heyn
- SINTEF
Materials and Chemistry, P.O. Box 124, Blindern, N-0314 Oslo, Norway
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36
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Huang L, Wei H. Mechanistic insights into B–H bond activation with the high-valent oxo-molybdenum complex MoO2Cl2. NEW J CHEM 2014. [DOI: 10.1039/c4nj01188k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ionic mechanistic model involving the heterolytic cleavage of the B–H bond is slightly energetically favorable than the [2+2] addition mechanism for the high-valent oxo-molybdenum complex MoO2Cl2activating the B–H bond.
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Affiliation(s)
- Liangfang Huang
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory for NSLSCS
- Nanjing Normal University
- Nanjing 210097, China
| | - Haiyan Wei
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Jiangsu Provincial Key Laboratory for NSLSCS
- Nanjing Normal University
- Nanjing 210097, China
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37
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Schmidbaur H, Raubenheimer HG, Dobrzańska L. The gold-hydrogen bond, Au-H, and the hydrogen bond to gold, Au∙∙∙H-X. Chem Soc Rev 2013; 43:345-80. [PMID: 23999756 DOI: 10.1039/c3cs60251f] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the first part of this review, the characteristics of Au-H bonds in gold hydrides are reviewed including the data of recently prepared stable organometallic complexes with gold(I) and gold(III) centers. In the second part, the reports are summarized where authors have tried to provide evidence for hydrogen bonds to gold of the type Au∙∙∙H-X. Such interactions have been proposed for gold atoms in the Au(-I), Au(0), Au(I), and Au(III) oxidation states as hydrogen bonding acceptors and H-X units with X = O, N, C as donors, based on both experimental and quantum chemistry studies. To complement these findings, the literature was screened for examples with similar molecular geometries, for which such bonding has not yet been considered. In the discussion of the results, the recently issued IUPAC definitions of hydrogen bonding and the currently accepted description of agostic interactions have been used as guidelines to rank the Au∙∙∙H-X interactions in this broad range of weak chemical bonding. From the available data it appears that all the intra- and intermolecular Au∙∙∙H-X contacts are associated with very low binding energies and non-specific directionality. To date, the energetics have not been estimated, because there are no thermochemical and very limited IR/Raman and temperature-dependent NMR data that can be used as reliable references. Where conspicuous structural or spectroscopic effects have been observed, explanations other than hydrogen bonding Au∙∙∙H-X can also be advanced in most cases. Although numerous examples of short Au∙∙∙H-X contacts exist in the literature, it seems, at this stage, that these probably make only very minor contributions to the energy of a given system and have only a marginal influence on molecular conformations which so far have most often attracted researchers to this topic. Further, more dedicated investigations will be necessary before well founded conclusions can be drawn.
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Affiliation(s)
- Hubert Schmidbaur
- Department Chemie, Technische Universität München, Garching, Germany.
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Joost M, Gualco P, Mallet-Ladeira S, Amgoune A, Bourissou D. DirectsynInsertion of Alkynes and Allenes into AuSi Bonds. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303450] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Joost M, Gualco P, Mallet-Ladeira S, Amgoune A, Bourissou D. DirectsynInsertion of Alkynes and Allenes into AuSi Bonds. Angew Chem Int Ed Engl 2013; 52:7160-3. [DOI: 10.1002/anie.201303450] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Indexed: 11/11/2022]
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