1
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Landrini M, Patel R, Tyrrell-Thrower J, Macchioni A, Hughes DL, Tensi L, Hrobárik P, Rocchigiani L. Exploring Ligand Effects on Structure, Bonding, and Photolytic Hydride Transfer of Cationic Gold(I) Bridging Hydride Complexes of Molybdocene and Tungstenocene. Inorg Chem 2024; 63:13525-13545. [PMID: 38989543 DOI: 10.1021/acs.inorgchem.4c01655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
A diverse family of heterobimetallic bridging hydride adducts of the type [LAu(μ-H)2MCp2][X] (L = 1,3-bis(2,6-diisopropylphenyl)imidazole-2-ylidene, IPr; 1,3-bis(1-adamantyl)imidazole-2-ylidene, IAd; 1,3-bis(2,6-di-iso-propylphenyl)-5,5-dimethyl-4,6-diketopyrimidinyl-2-ylidene, DippDAC; triphenylphosphine, PPh3; 2-di-tert-butylphosphino-2',4',6'-triisopropylbiphenyl, tBuXPhos; X = SbF6-, BF4- or TfO-) was synthesized by reacting group VI metallocene dihydrides Cp2MH2 (Cp = cyclopentadienyl anion; M = Mo, W) with cationic gold(I) complexes [LAu(NCMe)][X]. Trimetallic [L'Au2(μ-H)2WCp2][X]2 and tetrametallic [L'Au2{(μ-H)2WCp2}2] [X]2 complexes (L' = rac-2,2'-bis(diphenylphosphino)-1,1'-binaphthalene or bis(diphenylphosphinomethane)) were obtained by reacting digold [L'{Au(NCMe)}2][X]2 with Cp2WH2 in a 1:1 and a 1:2 stoichiometry. Accessing such a broad structural diversity allowed us to pinpoint roles played by the ancillary ligands and group VI metals on the bonding properties of this family of bridging hydrides. In particular, a clear effect of the ligand on the interaction energy and electronic structure was observed, with important implications on photolytic reactivity. UV or visible light irradiation, indeed, leads to the selective cleavage of the heterobimetallic Au(μ-H)2M arrangement and formation of molecular gold hydrides. The photolysis was found to be chromoselective (wavelength-dependent), which can be ascribed to different charge redistributions upon excitation to the first (Kasha's reactivity) and higher (anti-Kasha's reactivity) excited states.
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Affiliation(s)
- Martina Landrini
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Rohan Patel
- School of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, U.K
| | - Joshua Tyrrell-Thrower
- School of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, U.K
| | - Alceo Macchioni
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, U.K
| | - Leonardo Tensi
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Peter Hrobárik
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, SK-84215 Bratislava, Slovakia
| | - Luca Rocchigiani
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Via Elce di Sotto 8, 06123 Perugia, Italy
- School of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, U.K
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2
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Suzuki W, Mizuhata Y, Tokitoh N, Teranishi T. Dioxygen Activation by Gold(I)-Distorted Porphyrin Dinuclear Complexes. Chemistry 2024:e202401242. [PMID: 38888030 DOI: 10.1002/chem.202401242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 06/15/2024] [Accepted: 06/17/2024] [Indexed: 06/20/2024]
Abstract
Interactions between gold-based materials and dioxygen (O2) have motivated researchers to understand reaction mechanisms for O2 activation by homo- and heterogeneous gold catalysts. In this work, gold(I) porphyrin dinuclear complexes were synthesized with a saddle-distorted porphyrin ligand. The gold(I) porphyrin complexes showed unprecedented O2 activation in the presence of protic solvents to form gold(III) tetradentate porphyrin complexes. Mechanistic insights into the O2 activation by the gold(I) center were elucidated by spectroscopic measurements and theoretical calculations, revealing that dissociation of halides on the gold(I) center by alcohol solvents and hydrogen bonding of an N-H proton in the distorted porphyrin with dioxygen played important roles in establishing the unique reactivities of gold(I) complexes.
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Affiliation(s)
- Wataru Suzuki
- Institute for Chemical Research, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Graduate School of Engineering, University of Hyogo, 2167 Shosha Himeji, Hyogo, 671-2280, Japan
| | - Yoshiyuki Mizuhata
- Institute for Chemical Research, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Graduate School of Science, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Integrated Research Consortium on Chemical Sciences, Gokasho Uji, Kyoto, 611-0011, Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Graduate School of Science, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Integrated Research Consortium on Chemical Sciences, Gokasho Uji, Kyoto, 611-0011, Japan
| | - Toshiharu Teranishi
- Institute for Chemical Research, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
- Graduate School of Science, Kyoto University, Gokasho Uji, Kyoto, 611-0011, Japan
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3
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Martín J, Schörgenhumer J, Biedrzycki M, Nevado C. (P^N^C) Ligands to Stabilize Gold(III): A Straightforward Access to Hydroxo, Formate, and Hydride Complexes. Inorg Chem 2024; 63:8390-8396. [PMID: 38657169 PMCID: PMC11080065 DOI: 10.1021/acs.inorgchem.4c00788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/26/2024]
Abstract
A novel class of (P^N^C) pincer ligands capable of stabilizing elusive gold(III) species is reported here. Straightforward access to (P^N^C)gold(III) hydroxo, formate, and hydride complexes has been streamlined by first incorporating a cycloauration step devoid of toxic metals or harsh conditions. The resulting gold complexes exhibit remarkable stability in solution as well as in the solid state under ambient conditions, which enabled their characterization by X-ray diffraction analyses. Interestingly, the influence of the ligand allowed the preparation of gold(III)-hydrides using mild hydride donors such as H-Bpin, which contrasts with sensitive super hydrides or strong acids and cryogenic conditions employed in previous protocols. A detailed bonding characterization of these species is complemented by reactivity studies.
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Affiliation(s)
- Jaime Martín
- Department of Chemistry, University
of Zurich, Winterthurerstrasse 190, Zurich, CH 8057, Switzerland
| | - Johannes Schörgenhumer
- Department of Chemistry, University
of Zurich, Winterthurerstrasse 190, Zurich, CH 8057, Switzerland
| | - Michał Biedrzycki
- Department of Chemistry, University
of Zurich, Winterthurerstrasse 190, Zurich, CH 8057, Switzerland
| | - Cristina Nevado
- Department of Chemistry, University
of Zurich, Winterthurerstrasse 190, Zurich, CH 8057, Switzerland
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4
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Antsiburov I, Schütz M, Bühler R, Muhr M, Stephan J, Gemel C, Klein W, Kahlal S, Saillard JY, Fischer RA. All-Hydrocarbon-Ligated Superatomic Gold/Aluminum Clusters. Inorg Chem 2024; 63:3749-3756. [PMID: 38335041 PMCID: PMC10900290 DOI: 10.1021/acs.inorgchem.3c03790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Key strategies in cluster synthesis include the use of modulating agents (e.g., coordinating additives). We studied the influence of various phosphines exhibiting different steric and electronic properties on the reduction of the Au(I) precursor to Au(0) clusters. We report a synthesis of the bimetallic clusters [Au6(AlCp*)6] = [Au6Al6](Cp*)6 (1) and [HAu7(AlCp*)6] = [HAu7Al6](Cp*)6 (2) (Cp* = pentamethylcyclopentadiene) using Au(I) precursors and AlCp*. The cluster [Au2(AlCp*)5] = [Au2Al5](Cp*)5 (3) was isolated and identified as an intermediate species in the reactions to 1 and 2. The processes of cluster growth and degradation were investigated by in situ 1H NMR and LIFDI-MS techniques. The structures of 1 and 2 were established by DFT geometry optimization. These octahedral clusters can both be described as closed-shell 18-electron superatoms.
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Affiliation(s)
- Ivan Antsiburov
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Max Schütz
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Raphael Bühler
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Maximilian Muhr
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Johannes Stephan
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Christian Gemel
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Wilhelm Klein
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
| | - Samia Kahlal
- Univ Rennes, CNRS, ISCR-UMR 6226, Beaulieu, Rennes F-35000, France
| | | | - Roland A Fischer
- Department of Chemistry and Catalysis Research Center, Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, Munich, Garching 85748, Germany
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5
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Hansen C, Docherty SR, Cao W, Yakimov AV, Copéret C. 109Ag NMR chemical shift as a descriptor for Brønsted acidity from molecules to materials. Chem Sci 2024; 15:3028-3032. [PMID: 38404381 PMCID: PMC10882518 DOI: 10.1039/d3sc04067d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 01/16/2024] [Indexed: 02/27/2024] Open
Abstract
Molecular-level understanding of the acid/base properties of heterogeneous catalysts requires the development of selective spectroscopic probes to establish structure-activity relationships. In this work we show that substituting the surface protons in oxide supports by isolobal N-heterocyclic carbene (NHC) Ag cations and measuring their 109Ag nuclear magnetic resonance (NMR) signatures enables to probe the speciation and to evaluate the corresponding Brønsted acidity of the substituted OH surface sites. Specifically, a series of silver N-heterocyclic carbene (NHC) Ag(i) complexes of general formula [(NHC)AgX] are synthesized and characterized, showing that the 109Ag NMR chemical shift of the series correlates with the Brønsted acidity of the conjugate acid of X- (i.e., HX), thus establishing an acidity scale based on 109Ag NMR chemical shift. The methodology is then used to evaluate the Brønsted acidity of the OH sites of representative oxide materials using Dynamic Nuclear Polarization (DNP-)enhanced solid-state NMR spectroscopy.
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Affiliation(s)
- Colin Hansen
- ETH Zurich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 1-5 CH-8093 Zurich Switzerland
| | - Scott R Docherty
- ETH Zurich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 1-5 CH-8093 Zurich Switzerland
| | - Weicheng Cao
- ETH Zurich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 1-5 CH-8093 Zurich Switzerland
| | - Alexander V Yakimov
- ETH Zurich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 1-5 CH-8093 Zurich Switzerland
| | - Christophe Copéret
- ETH Zurich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 1-5 CH-8093 Zurich Switzerland
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6
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Phearman AS, Ardon Y, Goldberg KI. Insertion of Molecular Oxygen into a Gold(III)-Hydride Bond. J Am Chem Soc 2024; 146:4045-4059. [PMID: 38290523 DOI: 10.1021/jacs.3c12285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The use of molecular oxygen as an oxidant in chemical synthesis has significant environmental and economic benefits, and it is widely used as such in large-scale industrial processes. However, its adoption in highly selective homogeneous catalytic transformations, particularly to produce oxygenated organics, has been hindered by our limited understanding of the mechanisms by which O2 reacts with transition metals. Of particular relevance are the mechanisms of the reactions of oxygen with late transition metal hydrides as these metal centers are better poised to release oxygenated products. Homogeneous catalysis with gold complexes has markedly increased, and herein we report the synthesis and full characterization of a rare AuIII-H, supported by a diphosphine pincer ligand (tBuPCP = 2,6-bis(di-tert-butylphosphinomethyl)benzene). [(tBuPCP)AuIII-H]+ was found to cleanly react with molecular oxygen to yield a stable AuIII-OOH complex that was also fully characterized. Extensive kinetic studies on the reaction via variable temperature NMR spectroscopy have been completed, and the results are consistent with an autoaccelerating radical chain mechanism. The observed kinetic behavior exhibits similarities to that of previously reported PdII-H and PtIV-H reactions with O2 but is not fully consistent with any known O2 insertion mechanism. As such, this study contributes to the nascent fundamental understanding of the mechanisms of aerobic oxidation of late metal hydrides.
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Affiliation(s)
- Alexander S Phearman
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Yotam Ardon
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Karen I Goldberg
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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7
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Jiang S, Cai Y, Rajeshkumar T, Del Rosal I, Maron L, Xu X. Synthesis and Reactivity of a Zinc Diazoalkyl Complex: [3+2] Cycloaddition Reaction with Carbon Monoxide. Angew Chem Int Ed Engl 2023; 62:e202307244. [PMID: 37358377 DOI: 10.1002/anie.202307244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 06/27/2023]
Abstract
This work reports the synthesis, characterization, and reactivity of the first example of a well-defined zinc α-diazoalkyl complex. Treatment of zinc(I)-zinc(I) bonded compound L2 Zn2 [L=CH3 C(2,6-i Pr2 C6 H3 N)CHC(CH3 )(NCH2 CH2 PPh2 )] or zinc(II) hydride LZnH with trimethylsilyldiazomethane affords zinc diazoalkyl complex LZnC(N2 )SiMe3 . This complex liberates N2 in the presence of a nickel catalyst to form an α-zincated phosphorus ylide by reacting with the pendant phosphine. It selectively undergoes formal [3+2] cycloaddition with CO2 or CO to form the corresponding product with a five-membered heterocyclic core. Notably, the use of CO in such a [3+2] cycloaddition reaction is unprecedented, reflecting a novel CO reaction mode.
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Affiliation(s)
- Shengjie Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yanping Cai
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Thayalan Rajeshkumar
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Iker Del Rosal
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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8
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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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9
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Mertens RT, Gukathasan S, Arojojoye AS, Olelewe C, Awuah SG. Next Generation Gold Drugs and Probes: Chemistry and Biomedical Applications. Chem Rev 2023; 123:6612-6667. [PMID: 37071737 PMCID: PMC10317554 DOI: 10.1021/acs.chemrev.2c00649] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
The gold drugs, gold sodium thiomalate (Myocrisin), aurothioglucose (Solganal), and the orally administered auranofin (Ridaura), are utilized in modern medicine for the treatment of inflammatory arthritis including rheumatoid and juvenile arthritis; however, new gold agents have been slow to enter the clinic. Repurposing of auranofin in different disease indications such as cancer, parasitic, and microbial infections in the clinic has provided impetus for the development of new gold complexes for biomedical applications based on unique mechanistic insights differentiated from auranofin. Various chemical methods for the preparation of physiologically stable gold complexes and associated mechanisms have been explored in biomedicine such as therapeutics or chemical probes. In this Review, we discuss the chemistry of next generation gold drugs, which encompasses oxidation states, geometry, ligands, coordination, and organometallic compounds for infectious diseases, cancer, inflammation, and as tools for chemical biology via gold-protein interactions. We will focus on the development of gold agents in biomedicine within the past decade. The Review provides readers with an accessible overview of the utility, development, and mechanism of action of gold-based small molecules to establish context and basis for the thriving resurgence of gold in medicine.
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Affiliation(s)
- R Tyler Mertens
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Sailajah Gukathasan
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Adedamola S Arojojoye
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Chibuzor Olelewe
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Samuel G Awuah
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- University of Kentucky Markey Cancer Center, Lexington, Kentucky 40536, United States
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10
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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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11
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Dong J, Robinson JR, Gao ZH, Wang LS. Selective Semihydrogenation of Polarized Alkynes by a Gold Hydride Nanocluster. J Am Chem Soc 2022; 144:12501-12509. [PMID: 35771170 DOI: 10.1021/jacs.2c05046] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The hydridic hydrogen in nanogold catalysts has long been postulated as an important intermediate in hydrogenation reactions, but it has not been directly observed. Here, we report the synthesis of a new undecagold cluster with a bidentate phosphine ligand. The chelating effects of the bidentate ligand result in a more symmetric Au11 core with two labile Cl- ligands that can exchange with BH4-, leading to a novel undecagold hydride cluster. The new hydride cluster is discovered to readily undergo hydroauration reaction with alkynes containing electron-withdrawing groups, forming key gold-alkenyl semihydrogenation intermediates, which can be efficiently and selectively converted to Z-alkenes under acidic conditions. All key reaction intermediates are isolated and characterized, providing atomic-level insights into the active sites and mechanisms of semihydrogenation reactions catalyzed by gold-based nanomaterials. The hydridic hydrogen in the undecagold cluster is found to be the key to prevent over hydrogenation of alkenes to alkanes. The current study provides fundamental insights into hydrogenation chemistry enabled by gold-based nanomaterials and may lead to the development of efficient catalysts for selective semihydrogenation or functionalization of alkynes.
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Affiliation(s)
- Jia Dong
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Ze-Hua Gao
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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12
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O'Brien L, Argent SP, Ermanis K, Lam HW. Gold(I)‐Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates. Angew Chem Int Ed Engl 2022; 61:e202202305. [PMID: 35239987 PMCID: PMC9314030 DOI: 10.1002/anie.202202305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Indexed: 12/21/2022]
Affiliation(s)
- Luke O'Brien
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry University of Nottingham University Park Nottingham NG7 2RD UK
| | - Stephen P. Argent
- School of Chemistry University of Nottingham University Park Nottingham NG7 2RD UK
| | - Kristaps Ermanis
- School of Chemistry University of Nottingham University Park Nottingham NG7 2RD UK
| | - Hon Wai Lam
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry University of Nottingham University Park Nottingham NG7 2RD UK
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13
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Structure and reactivity of germylene-bridged digold complexes. Nat Commun 2022; 13:1785. [PMID: 35379820 PMCID: PMC8979951 DOI: 10.1038/s41467-022-29476-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 03/08/2022] [Indexed: 11/17/2022] Open
Abstract
The bonding between gold and main-group metallic elements (M) featuring Auδ−−Mδ+ polarity, has been studied recently. The gold in the bonds is expected to have the oxidation number of −1, and hence, nucleophilic. However, the knowledge of the reactivity of the gold-metal bonds remains limited. Here, we report digold-substituted germanes of the form of R’2Ge(AuPR3)(AuGeR’2) (3a; R = Me, 3b; R = Et), featuring two Au-Ge(IV) and one Au-Ge(II) bonds. DFT calculations of 3a revealed the existence of high-lying σ(Ge-Au) type HOMO and low-lying LUMO with germylene pπ nature. A pendular motion of AuPR3 group between Ge(IV) and Ge(II) of 3 occurs in the NMR time scale, suggesting that the Ge(II) center has an enhanced electrophilicity to be attacked by the nucleophilic gold (−I) atom. 3a reacts with nucleophilic Cl− and electrophilic MeOTf reagents at Ge(II) and Ge(IV) centers, respectively. The number of metal complexes featuring gold-germanium bonds is limited. Here the authors report the preparation of germylene-bridged digold complexes complexes and study their structure, bonding, and reactivity.
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14
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Martínez-Laguna J, Mollar-Cuni A, Ventura-Espinosa D, Martín S, Caballero A, Mata JA, Pérez PJ. Gold nanoparticle-catalysed functionalization of carbon-hydrogen bonds by carbene transfer reactions. Dalton Trans 2022; 51:5250-5256. [PMID: 35285846 DOI: 10.1039/d1dt04351j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold nanoparticles stabilized by NHC ligands and supported onto reduced graphene oxide (rGO) catalyse the functionalization of cyclohexane and benzene C-H bonds upon insertion of carbene CHCO2Et (from N2CHCO2Et) groups. This is the first example in which such Csp3-H or Csp2-H bonds are functionalized with this strategy with nanoparticulated gold. This Au-NP@rGO material shows an exceptional activity, providing TON values 5-10 times higher than those already reported for molecular gold catalysts. Recyclability is also effective, reaching an accumulated TON value of 1400 after six consecutive uses.
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Affiliation(s)
- Jonathan Martínez-Laguna
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química. Universidad de Huelva, Campus de El Carmen s/n, 21007-Huelva, Spain.
| | - Andrés Mollar-Cuni
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINCA). Universitat Jaume I, Avda. Sos Baynat s/n, 12006-Castellón, Spain.
| | - David Ventura-Espinosa
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINCA). Universitat Jaume I, Avda. Sos Baynat s/n, 12006-Castellón, Spain.
| | - Santiago Martín
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain.,Departamento de Química Física, Universidad de Zaragoza, 50009, Zaragoza (Spain) and Laboratorio de Microscopias Avanzadas (LMA). Universidad de Zaragoza, Edificio I+D+i. 50018, Zaragoza, Spain
| | - Ana Caballero
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química. Universidad de Huelva, Campus de El Carmen s/n, 21007-Huelva, Spain.
| | - Jose A Mata
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINCA). Universitat Jaume I, Avda. Sos Baynat s/n, 12006-Castellón, Spain.
| | - Pedro J Pérez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química. Universidad de Huelva, Campus de El Carmen s/n, 21007-Huelva, Spain.
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15
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O'Brien L, Argent SP, Ermanis K, Lam HW. Gold(I)‐Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luke O'Brien
- University of Nottingham School of Chemistry UNITED KINGDOM
| | | | | | - Hon Wai Lam
- University of Nottingham The GSK Carbon Neutral Laboratories for Sustainable Chemistry Jubilee CampusTriumph Road NG7 2TU Nottingham UNITED KINGDOM
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16
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Chang F, Wang C, Chen Q, Zhang Y, Liu G. A Chemoenzymatic Cascade Combining a Hydration Catalyst with an Amine Dehydrogenase: Synthesis of Chiral Amines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fengwei Chang
- International Joint Laboratory on Resource Chemistry and Engineering Research Center of Green Energy Chemical Engineering Shanghai Normal University Shanghai 200234 P.R. China
| | - Chengyi Wang
- International Joint Laboratory on Resource Chemistry and Engineering Research Center of Green Energy Chemical Engineering Shanghai Normal University Shanghai 200234 P.R. China
| | - Qipeng Chen
- International Joint Laboratory on Resource Chemistry and Engineering Research Center of Green Energy Chemical Engineering Shanghai Normal University Shanghai 200234 P.R. China
| | - Yongjin Zhang
- International Joint Laboratory on Resource Chemistry and Engineering Research Center of Green Energy Chemical Engineering Shanghai Normal University Shanghai 200234 P.R. China
| | - Guohua Liu
- International Joint Laboratory on Resource Chemistry and Engineering Research Center of Green Energy Chemical Engineering Shanghai Normal University Shanghai 200234 P.R. China
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17
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Li Y, Guorong Z, Lu H, Rong Z, Wang L, Qi F, Kira M, Li Z. Trinuclear anionic gold clusters bridged by dialkylsilylene and dialkylgermylene. Chem Commun (Camb) 2022; 58:6705-6708. [DOI: 10.1039/d2cc02054h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While the chemistry of gold clusters has been developed rapidly, the knowledge of trinuclear gold clusters with low-valent gold remains scarce. Herein, we report the synthesis, structural characterization, and density...
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18
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van Zyl WE, Liu CW. Interstitial hydrides in nanoclusters can reduce M(I) (M = Cu, Ag, Au) to M(0) and form stable superatoms. Chemistry 2021; 28:e202104241. [PMID: 34936722 DOI: 10.1002/chem.202104241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Indexed: 11/11/2022]
Abstract
High-nuclearity clusters resemble the closest model between the determination of atomically precise chemical species and the bulk metallic version thereof, and both impacts on a variety of applications, including catalysis, optics, sensors, and new energy sources. Our interest lies with the nanoclusters of the Group 11 (Cu, Ag, Au) metals stabilized by dichalcogenido and hydrido ligands. Herein, we describe superatoms formed by the clusters and their relationship with precursor hydrido clusters. Specifically, our concept seeks to demonstrate a possible correlation that exist between hydrido clusters (and nanoalloys) and the formation of superatoms, with the loss of hydrides and typically with release of H 2 gas. These reactions appear to be internal self-redox reactions and require no additional reducing agent, but does seem to require a similar core structure. Knowledge of such processes could provide insight into how clusters grow and an understanding in bridging the atomically precise cluster - metal nanoparticle mechanism.
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Affiliation(s)
- Werner E van Zyl
- University of Kwazulu-Natal, School of Chemistry and Physics, SOUTH AFRICA
| | - Chen-Wei Liu
- National Dong Hwa University, Department of Chemistry, 1, section 2, University drive, 974, Hualien, TAIWAN
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19
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Liu G, Chang F, Wang C, Chen Q, Zhang Y. A Chemoenzymatic Cascade Combining a Hydration Catalyst with an Amine Dehydrogenase: Synthesis of Chiral Amines. Angew Chem Int Ed Engl 2021; 61:e202114809. [PMID: 34935242 DOI: 10.1002/anie.202114809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Indexed: 11/07/2022]
Abstract
An encapsulated gold carbene complex was combined with a free amine dehydrogenase (GkAmDH) as a co-catalyst, enabling a cascade synthetic route to directly access chiral amines from propargylethers. This process, combining an initial gold carbene catalyzed hydration of propargylethers to ketones followed by a subsequent reductive amination, produces a wide range of chiral amines in high yields and excellent enantioselectivities.An encapsulated gold carbene complex was combined with a free amine dehydrogenase (GkAmDH) as a co-catalyst, enabling a cascade synthetic route to directly access chiral amines from propargylethers. This process, combining an initial gold carbene catalyzed hydration of propargylethers to ketones followed by a subsequent reductive amination, produces a wide range of chiral amines in high yields and excellent enantioselectivities.
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Affiliation(s)
- Guohua Liu
- Shanghai Normal University, Department of Chemistry, No.100 Guilin Rd, 200234, Shanghai, CHINA
| | - Fengwei Chang
- Shanghai Normal University - Xuhui Campus: Shanghai Normal University, Chemistry, CHINA
| | - Chengyi Wang
- Shanghai Normal University - Xuhui Campus: Shanghai Normal University, Chemistry, CHINA
| | - Qipeng Chen
- Shanghai Normal University - Xuhui Campus: Shanghai Normal University, Chemistry, CHINA
| | - Yongjin Zhang
- Shanghai Normal University - Xuhui Campus: Shanghai Normal University, Chemistry, CHINA
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20
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Zhang S, Yang Q, Zhang X, Zhao K, Yu H, Zhu L, Liu H. Crystal structures and superconductivity of lithium and fluorine implanted gold hydrides under high pressures. Phys Chem Chem Phys 2021; 23:21544-21553. [PMID: 34549743 DOI: 10.1039/d1cp02781f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The investigations on gold science have been capturing research interest due to its diverse physical and chemical properties. Gold hydrides in the solid state, as a member of the Au compound family, are rare since the reaction of Au with H is hindered in terms of their similar electronegativity. It is expected that Li and F can provide electrons and holes, respectively, to help stabilize gold hydrides under high pressure. Herein, by means of a crystal structural search based on particle swarm optimization methodology accompanied by first-principles calculations, four hitherto unknown Li-Au-H compounds (i.e., LiAuH, LiAu2H, Li2Au2H, and Li6AuH) are predicted to be stable under compression. Intriguingly, Au-H bonding is found in LiAuH, LiAu2H, and Li2Au2H. As the gold content increases, Au atom arrangements exhibit diverse forms, from the chain in Li6AuH, the square layer in LiAuH, the network in Li2Au2H, and eventually to the coexistence of square and pyramid layers in LiAu2H. Additionally, Li6AuH has a unique cage-type lithium structure. Furthermore, electron-phonon coupling calculations show that these Li-Au-H phases are phonon-modulated superconductors with a superconducting critical temperature of 1.3, 0.06, and 0.02 K at 25 GPa and 2.79 K at 100 GPa. In contrast, we also identified two solid F4AuH and F6AuH phases with unexpected semiconductivity. They have structural configurations of H-bridged AuF4 quasi-square components and distorted AuF6 octahedrons, respectively, and have no gold-to-hydrogen bonds. Our current results indicate that electron doping at suitable concentrations under pressure can stabilize unique gold hydrides, and provide deep insights into the structures, electron properties, bonding behavior, and stability mechanism of ternary Li-Au-H and F-Au-H compounds.
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Affiliation(s)
- Shoutao Zhang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Qiuping Yang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Xiaohua Zhang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Kaixuan Zhao
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Hong Yu
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
| | - Li Zhu
- Department of Physics, Rutgers University, Newark, NJ 07102, USA.
| | - Hanyu Liu
- International Center for Computational Method & Software and State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China. .,Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education),College of Physics, Jilin University, Changchun 130012, China
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21
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Navarro M, Miranda-Pizarro J, Moreno JJ, Navarro-Gilabert C, Fernández I, Campos J. A dicoordinate gold(I)-ethylene complex. Chem Commun (Camb) 2021; 57:9280-9283. [PMID: 34519292 PMCID: PMC8438763 DOI: 10.1039/d1cc02769g] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of the exceptionally bulky tris-2-(4,4′-di-tert-butylbiphenylyl)phosphine ligand allows the isolation and complete characterization of the first dicoordinate gold(i)–ethylene adduct, filling a missing fundamental piece on the organometallic chemistry of gold. Besides, the bonding situation of this species has been investigated by means of state-of-the-art Density Functional Theory (DFT) calculations indicating that π-backdonation plays a minor role compared with tricoordinate analogues. The use of the exceptionally bulky tris-2-(4,4′-di-tert-butylbiphenylyl)phosphine ligand allows the isolation and complete characterization of the first dicoordinate gold(i)–ethylene adduct, filling a missing fundamental piece on the organometallic chemistry of gold.![]()
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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.
| | - Juan Miranda-Pizarro
- 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.
| | - Juan J 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, Sevilla 41092, Spain.
| | - Carlos Navarro-Gilabert
- 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.
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Madrid 28040, 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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22
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Engbers S, Trifonova EA, Hess KM, Vries F, Klein JEMN. Synthesis of a Sterically Encumbered Pincer Au(III)−OH Complex. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Silène Engbers
- Molecular Inorganic Chemistry Stratingh Institute for Chemistry Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Evgeniya A. Trifonova
- Molecular Inorganic Chemistry Stratingh Institute for Chemistry Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Kristopher M. Hess
- Molecular Inorganic Chemistry Stratingh Institute for Chemistry Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Folkert Vries
- Molecular Inorganic Chemistry Stratingh Institute for Chemistry Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Johannes E. M. N. Klein
- Molecular Inorganic Chemistry Stratingh Institute for Chemistry Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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23
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Abstract
In this contribution, we provide an overview of the main avenues that have emerged in gold coordination chemistry during the last years. The unique properties of gold have motivated research in gold chemistry, and especially regarding the properties and applications of gold compounds in catalysis, medicine, and materials chemistry. The advances in the synthesis and knowledge of gold coordination compounds have been possible with the design of novel ligands becoming relevant motifs that have allowed the preparation of elusive complexes in this area of research. Strong donor ligands with easily modulable electronic and steric properties, such as stable singlet carbenes or cyclometalated ligands, have been decisive in the stabilization of gold(0) species, gold fluoride complexes, gold hydrides, unprecedented π complexes, or cluster derivatives. These new ligands have been important not only from the fundamental structure and bonding studies but also for the synthesis of sophisticated catalysts to improve activity and selectivity of organic transformations. Moreover, they have enabled the facile oxidative addition from gold(I) to gold(III) and the design of a plethora of complexes with specific properties.
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Affiliation(s)
- Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
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24
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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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25
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Rocchigiani L, Bochmann M. Recent Advances in Gold(III) Chemistry: Structure, Bonding, Reactivity, and Role in Homogeneous Catalysis. Chem Rev 2020; 121:8364-8451. [DOI: 10.1021/acs.chemrev.0c00552] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Luca Rocchigiani
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
| | - Manfred Bochmann
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
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26
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Manar KK, Chakrabortty S, Porwal VK, Prakash D, Thakur SK, Choudhury AR, Singh S. Two‐Coordinate Cu(I) and Au(I) Complexes Supported by BICAAC and CAAC Ligands. ChemistrySelect 2020. [DOI: 10.1002/slct.202002295] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Krishna K. Manar
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Soumyadeep Chakrabortty
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Vishal Kumar Porwal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Darsana Prakash
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Sandeep Kumar Thakur
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Sanjay Singh
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
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27
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Ramamoorthy RK, Yildirim E, Barba E, Roblin P, Vargas JA, Lacroix LM, Rodriguez-Ruiz I, Decorse P, Petkov V, Teychené S, Viau G. The role of pre-nucleation clusters in the crystallization of gold nanoparticles. NANOSCALE 2020; 12:16173-16188. [PMID: 32701100 DOI: 10.1039/d0nr03486j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The syntheses of metal nanoparticles by reduction in apolar solvents in the presence of long chain surfactants have proven to be extremely effective in the control of the particle size and shape. Nevertheless, the elucidation of the nucleation/growth mechanism is not straightforward because of the multiple roles played by surfactants. The nucleation stage, in particular, is very difficult to describe precisely and requires in situ and time-resolved techniques. Here, relying on in situ small angle X-ray scattering (SAXS), X-ray absorption spectroscopy (XAS) and high-energy X-ray diffraction (HE-XRD), we propose that ultra-small gold particles prepared by reduction of gold chloride in a solution of oleylamine (OY) in hexane with triisopropylsilane do not follow a classical nucleation process but result from pre-nucleation clusters (PNCs). These PNCs contain Au(iii) and Au(i) precursors; they are almost stable in size during the induction stage, as shown by SAXS, prior to undergoing a very fast shrinkage during the nucleation stage. The gold speciation as a function of time deduced from the XAS spectra has been analyzed through multi-step reaction pathways comprising both highly reactive species, involved in the nucleation and growth stages, and poorly reactive species acting as a reservoir for the reactive species. The duration of the induction period is related to the reactivity of the gold precursors, which is tuned by the coordination of OY to the gold complexes, while the nucleation stage was found to depend on the size and reactivity of the PNCs. The role of the PNCs in determining the final particle size and structure is also discussed in relation to previous studies. The multiple roles of OY, as the solubilizing agent of the gold salt, the ligand of the gold complexes determining both the size of the PNCs and the reactivity of the gold precursors, and finally the capping agent of the final gold particles as oleylammonium chloride, have been clearly established. This work opens new perspectives to synthesize metal NPs via metal-organic PNCs and to define new synthesis routes for nanoparticles that may present structure and morphologies different from those obtained by the classical nucleation routes.
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Affiliation(s)
- Raj Kumar Ramamoorthy
- Université de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets UMR 5215 INSA, CNRS, UPS, 135 avenue de Rangueil, F-31077 Toulouse cedex 4, France. and Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS Toulouse, France. and Fédération de Recherche FERMaT, Université de Toulouse, CNRS, INP, INSA, UPS, Toulouse, France
| | - Ezgi Yildirim
- Université de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets UMR 5215 INSA, CNRS, UPS, 135 avenue de Rangueil, F-31077 Toulouse cedex 4, France.
| | - Enguerrand Barba
- Université de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets UMR 5215 INSA, CNRS, UPS, 135 avenue de Rangueil, F-31077 Toulouse cedex 4, France.
| | - Pierre Roblin
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS Toulouse, France.
| | - Jorge A Vargas
- Department of Physics, Central Michigan University, Mt. Pleasant, MI-48858, USA and Unidad Académica de Física, Universidad Autónoma de Zacatecas, Calz. Solidaridad esq. Paseo de la Bufa s/n, Zacatecas, Mexico
| | - Lise-Marie Lacroix
- Université de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets UMR 5215 INSA, CNRS, UPS, 135 avenue de Rangueil, F-31077 Toulouse cedex 4, France.
| | - Isaac Rodriguez-Ruiz
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS Toulouse, France.
| | - Philippe Decorse
- Université de Paris, ITODYS UMR 7086, 15 rue Jean-Antoine de Baïf, 75013 Paris, France
| | - Valeri Petkov
- Department of Physics, Central Michigan University, Mt. Pleasant, MI-48858, USA
| | - Sébastien Teychené
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS Toulouse, France.
| | - Guillaume Viau
- Université de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets UMR 5215 INSA, CNRS, UPS, 135 avenue de Rangueil, F-31077 Toulouse cedex 4, France.
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28
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Xiong XG, Liu H. Anion Photoelectron Spectroscopy and Theoretical Study of HAuCN and [HAuCN] -: Spin-Orbit Coupling and Low-Lying Excited States. J Phys Chem A 2020; 124:4712-4719. [PMID: 32407628 DOI: 10.1021/acs.jpca.0c01707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a study of the electronic structures and chemical bonding of gaseous [HAuCN]- and the corresponding neutral molecule using photoelectron spectroscopy and relativistic quantum chemistry calculations. The electron affinity of the neutral HAuCN is reported to be 4.75 eV for the first time. The low-lying excited states of neutral molecule are observed and assigned according to the calculations utilizing a sophisticated electron correlation method incorporating both the scalar and spin-orbit relativistic effects. Our theoretical calculations suggest the geometry will be distorted from linear structure to the bent during the process of detaching one electron from the anion. Various chemical bonding analyses based on theoretical calculations have been performed for the titled complexes, and the apparent covalent natures of interactions between gold and the studied ligands have been verified.
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Affiliation(s)
- Xiao-Gen Xiong
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Hongtao Liu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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29
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Rocchigiani L, Klooster WT, Coles SJ, Hughes DL, Hrobárik P, Bochmann M. Hydride Transfer to Gold: Yes or No? Exploring the Unexpected Versatility of Au⋅⋅⋅H−M Bonding in Heterobimetallic Dihydrides. Chemistry 2020; 26:8267-8280. [DOI: 10.1002/chem.202000016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Luca Rocchigiani
- School of ChemistryUniversity of East Anglia Norwich Research Park Norwich NR47TJ UK
| | - Wim T. Klooster
- National Crystallography ServiceSchool of ChemistryUniversity of Southampton Southampton SO171BJ UK
| | - Simon J. Coles
- National Crystallography ServiceSchool of ChemistryUniversity of Southampton Southampton SO171BJ UK
| | - David L. Hughes
- School of ChemistryUniversity of East Anglia Norwich Research Park Norwich NR47TJ UK
| | - Peter Hrobárik
- Department of Inorganic ChemistryFaculty of Natural SciencesComenius University 84215 Bratislava Slovakia
| | - Manfred Bochmann
- School of ChemistryUniversity of East Anglia Norwich Research Park Norwich NR47TJ UK
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30
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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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31
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Daugherty NT, Robilotto TJ, Bacsa J, Gray TG, Sadighi JP. A trigold carbide cation stabilized as a labile pyridine adduct. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Alyabyev SB, Beletskaya IP. Gold as a catalyst. Part III. Addition to double bonds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Izquierdo MA, Tarantelli F, Broer R, Bistoni G, Belpassi L, Havenith RWA. Orbital Decomposition of the Carbon Chemical Shielding Tensor in Gold(I) N-Heterocyclic Carbene Complexes. Eur J Inorg Chem 2020; 2020:1177-1183. [PMID: 32362781 PMCID: PMC7188322 DOI: 10.1002/ejic.201901115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Indexed: 12/23/2022]
Abstract
The good performance of N-heterocyclic carbenes (NHCs), in terms of versatility and selectivity, has called the attention of experimentalists and theoreticians attempting to understand their electronic properties. Analyses of the Au(I)-C bond in [(NHC)AuL]+/0 (L stands for a neutral or negatively charged ligand), through the Dewar-Chatt-Duncanson model and the charge displacement function, have revealed that NHC is not purely a σ-donor but may have a significant π-acceptor character. It turns out, however, that only the σ-donation bonding component strongly correlates with one specific component of the chemical shielding tensor. Here, in extension to earlier works, a current density analysis, based on the continuous transformation of the current density diamagnetic zero approach, along a series of [(NHC)AuL]+/0 complexes is presented. The shielding tensor is decomposed into orbital contributions using symmetry considerations together with a spectral analysis in terms of occupied to virtual orbital transitions. Analysis of the orbital transitions shows that the induced current density is largely influenced by rotational transitions. The orbital decomposition of the shielding tensor leads to a deeper understanding of the ligand effect on the magnetic response properties and the electronic structure of (NHC)-Au fragments. Such an orbital decomposition scheme may be extended to other magnetic properties and/or substrate-metal complexes.
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Affiliation(s)
- Maria A. Izquierdo
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
- Institute of Molecular ScienceUniversity of ValenciaP.O. Box 2208546071ValenciaSpain
| | - Francesco Tarantelli
- Dipartimento di Chimica, Biologia e BiotecnologieUniversità di PerugiaVia Elce di Sotto 806123PerugiaItaly
- Istituto di Scienze e Tecnologie Chimiche del CNR “G. Natta” (SCITEC‐CNR)Via Elce di Sotto 806123PerugiaItaly
| | - Ria Broer
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Giovanni Bistoni
- Max‐Planck‐Institut für KohlenforschungKaiser‐Wilhelm‐Platz 145470Mülheim an der RuhrGermany
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie Chimiche del CNR “G. Natta” (SCITEC‐CNR)Via Elce di Sotto 806123PerugiaItaly
| | - Remco W. A. Havenith
- Zernike Institute for Advanced MaterialsUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
- Stratingh Institute for ChemistryUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
- Ghent Quantum Chemistry GroupDepartment of Inorganic and Physical ChemistryGhent UniversityKrijgslaan 281 (S3), B‐9000GentBelgium
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34
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Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)- and (Aryl)-(amino)carbene Coinage Metal Complexes and Their Applications. Chem Rev 2020; 120:4141-4168. [DOI: 10.1021/acs.chemrev.0c00043] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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35
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Stow CP, Widenhoefer RA. Synthesis, Structure, and Reactivity of Gold(I) α-Oxo Carbenoid Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Caroline P. Stow
- Department of Chemistry, Duke University, French Family
Science Center, Durham, North Carolina 27708, United States
| | - Ross A. Widenhoefer
- Department of Chemistry, Duke University, French Family
Science Center, Durham, North Carolina 27708, United States
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36
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Yuan SF, Li JJ, Guan ZJ, Lei Z, Wang QM. Ultrastable hydrido gold nanoclusters with the protection of phosphines. Chem Commun (Camb) 2020; 56:7037-7040. [DOI: 10.1039/d0cc02339f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Two phosphine-protected gold nanoclusters with an unprecedented hetero superatomic Au20 core have been isolated. The presence of hydrides is evidenced by mass spectrometry and NMR spectroscopy.
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Affiliation(s)
- Shang-Fu Yuan
- Department of Chemistry
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education
- Tsinghua University
- P. R. China
| | - Jiao-Jiao Li
- Department of Chemistry
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education
- Tsinghua University
- P. R. China
| | - Zong-Jie Guan
- Department of Chemistry
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education
- Tsinghua University
- P. R. China
- Department of Chemistry
| | - Zhen Lei
- Department of Chemistry
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education
- Tsinghua University
- P. R. China
| | - Quan-Ming Wang
- Department of Chemistry
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education
- Tsinghua University
- P. R. China
- Department of Chemistry
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37
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A. C. A. Bayrakdar T, Scattolin T, Ma X, Nolan SP. Dinuclear gold(i) complexes: from bonding to applications. Chem Soc Rev 2020; 49:7044-7100. [DOI: 10.1039/d0cs00438c] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The last two decades have seen a veritable explosion in the use of gold(i) complexes bearing N-heterocyclic carbene (NHC) and phosphine (PR3) ligands.
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Affiliation(s)
| | - Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
| | - Xinyuan Ma
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
| | - Steven P. Nolan
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
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38
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Dhara D, Das S, Pati SK, Scheschkewitz D, Chandrasekhar V, Jana A. NHC‐Coordinated Diphosphene‐Stabilized Gold(I) Hydride and Its Reversible Conversion to Gold(I) Formate with CO
2. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, Gopanpally Hyderabad- 500107 Telangana India
| | - Shubhajit Das
- Theoretical Sciences Unit Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore- 560064 India
- Present address: Laboratory for Computational Molecular Design Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Swapan K. Pati
- Theoretical Sciences Unit Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore- 560064 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- 500107 Telangana India
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur- 208016 India
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally Hyderabad- 500107 Telangana India
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39
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Dhara D, Das S, Pati SK, Scheschkewitz D, Chandrasekhar V, Jana A. NHC-Coordinated Diphosphene-Stabilized Gold(I) Hydride and Its Reversible Conversion to Gold(I) Formate with CO 2. Angew Chem Int Ed Engl 2019; 58:15367-15371. [PMID: 31414524 PMCID: PMC6916326 DOI: 10.1002/anie.201909798] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Indexed: 01/05/2023]
Abstract
An NHC-coordinated diphosphene is employed as ligand for the synthesis of a hydrocarbon-soluble monomeric AuI hydride, which readily adds CO2 at room temperature yielding the corresponding AuI formate. The reversible reaction can be expedited by the addition of NHC, which induces β-hydride shift and the removal of CO2 from equilibrium through the formation of an NHC-CO2 adduct. The AuI formate is alternatively formed by dehydrogenative coupling of the AuI hydride with formic acid (HCO2 H), thus in total establishing a reaction sequence for the AuI hydride mediated dehydrogenation of HCO2 H as chemical hydrogen storage material.
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Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, GopanpallyHyderabad-500107TelanganaIndia
| | - Shubhajit Das
- Theoretical Sciences UnitJawaharlal Nehru Centre for Advanced Scientific ResearchBangalore-560064India
- Present address: Laboratory for Computational Molecular Design Institute of Chemical Sciences and EngineeringEcole Polytechnique Federale de Lausanne (EPFL)1015LausanneSwitzerland
| | - Swapan K. Pati
- Theoretical Sciences UnitJawaharlal Nehru Centre for Advanced Scientific ResearchBangalore-560064India
| | - David Scheschkewitz
- Krupp-Chair of General and Inorganic ChemistrySaarland University66123SaarbrückenGermany
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, GopanpallyHyderabad-500107TelanganaIndia
- Department of ChemistryIndian Institute of Technology KanpurKanpur-208016India
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, GopanpallyHyderabad-500107TelanganaIndia
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40
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Joost M, Saffon-Merceron N, Amgoune A, Bourissou D. Synthesis, Structure, and Reactivity of an NHC Silyl Gold(I) Complex. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00574] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Maximilian Joost
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
| | | | - Abderrahmane Amgoune
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Didier Bourissou
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
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41
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Metz RB, Altinay G, Kostko O, Ahmed M. Probing Reactivity of Gold Atoms with Acetylene and Ethylene with VUV Photoionization Mass Spectrometry and Ab Initio Studies. J Phys Chem A 2019; 123:2194-2202. [DOI: 10.1021/acs.jpca.8b12560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ricardo B. Metz
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Gokhan Altinay
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Oleg Kostko
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Musahid Ahmed
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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42
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Zhang Y, Karunananda MK, Yu HC, Clark KJ, Williams W, Mankad NP, Ess DH. Dynamically Bifurcating Hydride Transfer Mechanism and Origin of Inverse Isotope Effect for Heterodinuclear AgRu-Catalyzed Alkyne Semihydrogenation. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04130] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ying Zhang
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Malkanthi K. Karunananda
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Hsien-Cheng Yu
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Kyle J. Clark
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Wendy Williams
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Neal P. Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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43
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Abstract
Solid-state auride salts featuring the negatively charged Au- ion are known to be stable in the presence of alkali metal counterions. While such electron-rich species might be expected to be nucleophilic (in the same manner as I-, for example), their instability in solution means that this has not been verified experimentally. Here we report a two-coordinate gold complex (NON)AlAuPtBu3 (where NON is the chelating tridentate ligand 4,5-bis(2,6-diisopropylanilido)-2,7-di-tert-butyl-9,9-dimethylxanthene) that features a strongly polarized bond, Auδ--Alδ+. This is synthesized by reaction of the potassium aluminyl compound [K{Al(NON)}]2 with tBu3PAuI. Computational studies of the complex, including quantum theory of atoms in molecules charge analysis, imply a charge at gold (-0.82) that is in line with the relative electronegativities of the two metals (Au: 2.54; Al: 1.61 on the Pauling scale). Consistently, the complex is found to act as a nucleophilic source of gold, reacting with diisopropylcarbodiimide and CO2 to give the Au-C bonded insertion products (NON)Al(X2C)AuPtBu3 (X = NiPr, 4; X = O, 5).
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44
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Rigoulet M, Massou S, Sosa Carrizo ED, Mallet-Ladeira S, Amgoune A, Miqueu K, Bourissou D. Evidence for genuine hydrogen bonding in gold(I) complexes. Proc Natl Acad Sci U S A 2019; 116:46-51. [PMID: 30567973 PMCID: PMC6320517 DOI: 10.1073/pnas.1817194116] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The ability of gold to act as proton acceptor and participate in hydrogen bonding remains an open question. Here, we report the synthesis and characterization of cationic gold(I) complexes featuring ditopic phosphine-ammonium (P,NH+) ligands. In addition to the presence of short Au∙∙∙H contacts in the solid state, the presence of Au∙∙∙H-N hydrogen bonds was inferred by NMR and IR spectroscopies. The bonding situation was extensively analyzed computationally. All features were consistent with the presence of three-center four-electron attractive interactions combining electrostatic and orbital components. The role of relativistic effects was examined, and the analysis is extended to other recently described gold(I) complexes.
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Affiliation(s)
- Mathilde Rigoulet
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Stéphane Massou
- Institut de Chimie de Toulouse, Fédération de Recherche Université - CNRS No 2599, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - E Daiann Sosa Carrizo
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement, Unité Mixte de Recherche Université - CNRS No 5254, Université de Pau et des Pays de l'Adour, 64053 Pau Cedex 09, France
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse, Fédération de Recherche Université - CNRS No 2599, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Abderrahmane Amgoune
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement, Unité Mixte de Recherche Université - CNRS No 5254, Université de Pau et des Pays de l'Adour, 64053 Pau Cedex 09, France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France;
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45
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Rocchigiani L, Fernandez-Cestau J, Chambrier I, Hrobárik P, Bochmann M. Unlocking Structural Diversity in Gold(III) Hydrides: Unexpected Interplay of cis/ trans-Influence on Stability, Insertion Chemistry, and NMR Chemical Shifts. J Am Chem Soc 2018; 140:8287-8302. [PMID: 29860842 PMCID: PMC6047844 DOI: 10.1021/jacs.8b04478] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Indexed: 11/29/2022]
Abstract
The synthesis of new families of stable or at least spectroscopically observable gold(III) hydride complexes is reported, including anionic cis-hydrido chloride, hydrido aryl, and cis-dihydride complexes. Reactions between (C^C)AuCl(PR3) and LiHBEt3 afford the first examples of gold(III) phosphino hydrides (C^C)AuH(PR3) (R = Me, Ph, p-tolyl; C^C = 4,4'-di- tert-butylbiphenyl-2,2'-diyl). The X-ray structure of (C^C)AuH(PMe3) was determined. LiHBEt3 reacts with (C^C)AuCl(py) to give [(C^C)Au(H)Cl]-, whereas (C^C)AuH(PR3) undergoes phosphine displacement, generating the dihydride [(C^C)AuH2]-. Monohydrido complexes hydroaurate dimethylacetylene dicarboxylate to give Z-vinyls. (C^N^C)Au pincer complexes give the first examples of gold(III) bridging hydrides. Stability, reactivity and bonding characteristics of Au(III)-H complexes crucially depend on the interplay between cis and trans-influence. Remarkably, these new gold(III) hydrides extend the range of observed NMR hydride shifts from δ -8.5 to +7 ppm. Relativistic DFT calculations show that the origin of this wide chemical shift variability as a function of the ligands depends on the different ordering and energy gap between "shielding" Au(dπ)-based orbitals and "deshielding" σ(Au-H)-type MOs, which are mixed to some extent upon inclusion of spin-orbit (SO) coupling. The resulting 1H hydride shifts correlate linearly with the DFT optimized Au-H distances and Au-H bond covalency. The effect of cis ligands follows a nearly inverse ordering to that of trans ligands. This study appears to be the first systematic delineation of cis ligand influence on M-H NMR shifts and provides the experimental evidence for the dramatic change of the 1H hydride shifts, including the sign change, upon mutual cis and trans ligand alternation.
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Affiliation(s)
- Luca Rocchigiani
- School
of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, United Kingdom
| | - Julio Fernandez-Cestau
- School
of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, United Kingdom
| | - Isabelle Chambrier
- School
of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, United Kingdom
| | - Peter Hrobárik
- Institut
für Chemie, Technische Universität
Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
- Department
of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-84215 Bratislava, Slovakia
| | - Manfred Bochmann
- School
of Chemistry, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, United Kingdom
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46
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Wang G, Gibbons SK, Glueck DS, Sibbald C, Fleming JT, Higham LJ, Rheingold AL. Copper–Phosphido Intermediates in Cu(IPr)-Catalyzed Synthesis of 1-Phosphapyracenes via Tandem Alkylation/Arylation of Primary Phosphines. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ge Wang
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Sarah K. Gibbons
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - David S. Glueck
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Connor Sibbald
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - James T. Fleming
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Lee J. Higham
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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47
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Lui MW, Shynkaruk O, Oakley MS, Sinelnikov R, McDonald R, Ferguson MJ, Meldrum A, Klobukowski M, Rivard E. Engaging dual donor sites within an N-heterocyclic olefin phosphine ligand. Dalton Trans 2018; 46:5946-5954. [PMID: 28418418 DOI: 10.1039/c7dt00398f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By investigating the coordination chemistry of a neutral N-heterocyclic olefin phosphine ligand, a new digold(i) chloride complex was discovered, demonstrating that mixed element (P/C) donor sites can be accessed at the same time. However attempts to extend this strategy for the preparation of heterobimetallic complexes featuring copper(i) and gold(i) centers with this mixed donor ligand were unsuccessful. The related monometallic copper(i) and gold(i) iodide complexes were discovered to be emissive in the solid state.
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Affiliation(s)
- Melanie W Lui
- Department of Chemistry, 11227 Saskatchewan Drive, University of Alberta, Edmonton, AB, Canada T6G 2G2.
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48
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Mankad NP. Diverse bimetallic mechanisms emerging from transition metal Lewis acid/base pairs: development of co-catalysis with metal carbenes and metal carbonyl anions. Chem Commun (Camb) 2018; 54:1291-1302. [DOI: 10.1039/c7cc09675e] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The rational development of catalytic reactions involving cooperative behavior between two catalytic reactive sites represents a frontier area of research from which novel reactivity and selectivity patterns emerge.
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Affiliation(s)
- Neal P. Mankad
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
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49
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Fernandez-Cestau J, Rocchigiani L, Pintus A, Rama RJ, Budzelaar PHM, Bochmann M. Isocyanide insertion into Au–H bonds: first gold iminoformyl complexes. Chem Commun (Camb) 2018; 54:11447-11450. [DOI: 10.1039/c8cc06409a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The reaction of gold hydrides with isocyanides leads to η1-iminoformyl complexes, the first example of an isocyanide insertion in gold chemistry. Key intermediates are gold(ii) isocyanide adducts.
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Affiliation(s)
| | | | - Anna Pintus
- School of Chemistry, University of East Anglia
- Norwich
- UK
| | - Raquel J. Rama
- School of Chemistry, University of East Anglia
- Norwich
- UK
- Departamento de Química Inorgánica, Universidad de Sevilla
- E-41092 Sevilla
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50
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Soluble aluminum hydrides function as catalysts in deprotonation, insertion, and activation reactions. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.017] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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