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Dupont J, Leal BC, Lozano P, Monteiro AL, Migowski P, Scholten JD. Ionic Liquids in Metal, Photo-, Electro-, and (Bio) Catalysis. Chem Rev 2024; 124:5227-5420. [PMID: 38661578 DOI: 10.1021/acs.chemrev.3c00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Ionic liquids (ILs) have unique physicochemical properties that make them advantageous for catalysis, such as low vapor pressure, non-flammability, high thermal and chemical stabilities, and the ability to enhance the activity and stability of (bio)catalysts. ILs can improve the efficiency, selectivity, and sustainability of bio(transformations) by acting as activators of enzymes, selectively dissolving substrates and products, and reducing toxicity. They can also be recycled and reused multiple times without losing their effectiveness. ILs based on imidazolium cation are preferred for structural organization aspects, with a semiorganized layer surrounding the catalyst. ILs act as a container, providing a confined space that allows modulation of electronic and geometric effects, miscibility of reactants and products, and residence time of species. ILs can stabilize ionic and radical species and control the catalytic activity of dynamic processes. Supported IL phase (SILP) derivatives and polymeric ILs (PILs) are good options for molecular engineering of greener catalytic processes. The major factors governing metal, photo-, electro-, and biocatalysts in ILs are discussed in detail based on the vast literature available over the past two and a half decades. Catalytic reactions, ranging from hydrogenation and cross-coupling to oxidations, promoted by homogeneous and heterogeneous catalysts in both single and multiphase conditions, are extensively reviewed and discussed considering the knowledge accumulated until now.
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Affiliation(s)
- Jairton Dupont
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain
| | - Bárbara C Leal
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Pedro Lozano
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain
| | - Adriano L Monteiro
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Pedro Migowski
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Jackson D Scholten
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
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2
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Escayola S, Bahri-Laleh N, Poater A. % VBur index and steric maps: from predictive catalysis to machine learning. Chem Soc Rev 2024; 53:853-882. [PMID: 38113051 DOI: 10.1039/d3cs00725a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Steric indices are parameters used in chemistry to describe the spatial arrangement of atoms or groups of atoms in molecules. They are important in determining the reactivity, stability, and physical properties of chemical compounds. One commonly used steric index is the steric hindrance, which refers to the obstruction or hindrance of movement in a molecule caused by bulky substituents or functional groups. Steric hindrance can affect the reactivity of a molecule by altering the accessibility of its reactive sites and influencing the geometry of its transition states. Notably, the Tolman cone angle and %VBur are prominent among these indices. Actually, steric effects can also be described using the concept of steric bulk, which refers to the space occupied by a molecule or functional group. Steric bulk can affect the solubility, melting point, boiling point, and viscosity of a substance. Even though electronic indices are more widely used, they have certain drawbacks that might shift preferences towards others. They present a higher computational cost, and often, the weight of electronics in correlation with chemical properties, e.g. binding energies, falls short in comparison to %VBur. However, it is worth noting that this may be because the steric index inherently captures part of the electronic content. Overall, steric indices play an important role in understanding the behaviour of chemical compounds and can be used to predict their reactivity, stability, and physical properties. Predictive chemistry is an approach to chemical research that uses computational methods to anticipate the properties and behaviour of these compounds and reactions, facilitating the design of new compounds and reactivities. Within this domain, predictive catalysis specifically targets the prediction of the performance and behaviour of catalysts. Ultimately, the goal is to identify new catalysts with optimal properties, leading to chemical processes that are both more efficient and sustainable. In this framework, %VBur can be a key metric for deepening our understanding of catalysis, emphasizing predictive catalysis and sustainability. Those latter concepts are needed to direct our efforts toward identifying the optimal catalyst for any reaction, minimizing waste, and reducing experimental efforts while maximizing the efficacy of the computational methods.
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Affiliation(s)
- Sílvia Escayola
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/Mª Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
- Donostia International Physics Center (DIPC), 20018 Donostia, Euskadi, Spain
| | - Naeimeh Bahri-Laleh
- Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran
- Institute for Sustainability with Knotted Chiral Meta Matter (WPI-SKCM), Hiroshima University, Hiroshima, 739-8526, Japan
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/Mª Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
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3
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Rahman M, Gao P, Zhao Q, Lalancette R, Szostak R, Szostak M. [Au(Np #)Cl]: Highly Reactive and Broadly Applicable Au(I)─NHC Catalysts for Alkyne π-Activation Reactions. Catal Sci Technol 2023; 13:5131-5139. [PMID: 38464950 PMCID: PMC10923537 DOI: 10.1039/d3cy00717k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Cationic Au(I)─NHC (NHC = N-heterocyclic carbene) complexes have become an important class of catalysts for alkyne π-activation reactions in organic synthesis. In particular, these complexes are characterized by high stability of catalytic species engendered by strong σ-donation and metal backbonding. Herein, we report the synthesis and characterization of well-defined [Au(NHC)Cl] complexes featuring recently discovered IPr# family of ligands that hinge upon modular peralkylation of aniline. These ligands have been commercialized in collaboration with MilliporeSigma (IPr#: 915653; Np#: 915912; BIAN-IPr#: 916420). Evaluation of the [Au(NHC)Cl] complexes in a series of Au(I)─NHC-catalyzed π-functionalizations of alkynes, such as hydrocarboxylation, hydroamination and hydration, resulted in the identification of wingtip-flexible [Au(Np#)Cl] as a highly reactive and broadly applicable catalyst with the re-activity outperforming the classical [Au(IPr)Cl] and [Au(IPr*)Cl] complexes. The utility of this catalyst has been demonstrated in the direct late-stage derivatization of complex pharmaceuticals. Structural and computational studies were conducted to determine steric effects, frontier molecular orbitals and bond orders of this class of catalysts. Considering the attractive features of well-defined Au(I)─NHC complexes, we anticipate that this class of bulky and wingtip-flexible Au(I)─NHCs based on the modular peralkylated naphthylamine scaffold will find broad application in π-functionalization of alkynes in various areas of organic synthesis and catalysis.
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Affiliation(s)
- Mahbubur Rahman
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
| | - Pengcheng Gao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
| | - Qun Zhao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
| | - Roger Lalancette
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
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4
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Rahman MM, Meng G, Bisz E, Dziuk B, Lalancette R, Szostak R, Szostak M. I tOct (I tOctyl) - pushing the limits of I tBu: highly hindered electron-rich N-aliphatic N-heterocyclic carbenes. Chem Sci 2023; 14:5141-5147. [PMID: 37206400 PMCID: PMC10189875 DOI: 10.1039/d3sc01006f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/15/2023] [Indexed: 05/21/2023] Open
Abstract
ItBu (ItBu = 1,3-di-tert-butylimidazol-2-ylidene) represents the most important and most versatile N-alkyl N-heterocyclic carbene available in organic synthesis and catalysis. Herein, we report the synthesis, structural characterization and catalytic activity of ItOct (ItOctyl), C2-symmetric, higher homologues of ItBu. The new ligand class, including saturated imidazolin-2-ylidene analogues has been commercialized in collaboration with MilliporeSigma: ItOct, 929 298; SItOct, 929 492 to enable broad access of the academic and industrial researchers within the field of organic and inorganic synthesis. We demonstrate that replacement of the t-Bu side chain with t-Oct results in the highest steric volume of N-alkyl N-heterocyclic carbenes reported to date, while retaining the electronic properties inherent to N-aliphatic ligands, such as extremely strong σ-donation crucial to the reactivity of N-alkyl N-heterocyclic carbenes. An efficient large-scale synthesis of imidazolium ItOct and imidazolinium SItOct carbene precursors is presented. Coordination chemistry to Au(i), Cu(i), Ag(i) and Pd(ii) as well as beneficial effects on catalysis using Au(i), Cu(i), Ag(i) and Pd(ii) complexes are described. Considering the tremendous importance of ItBu in catalysis, synthesis and metal stabilization, we anticipate that the new class of ItOct ligands will find wide application in pushing the boundaries of new and existing approaches in organic and inorganic synthesis.
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Affiliation(s)
- Md Mahbubur Rahman
- Department of Chemistry, Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Guangrong Meng
- Department of Chemistry, Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Elwira Bisz
- Department of Chemistry, Opole University 48 Oleska Street Opole 45-052 Poland
| | - Błażej Dziuk
- Department of Chemistry, Wroclaw University of Science and Technology Norwida 4/6 14 Wroclaw 50-373 Poland
| | - Roger Lalancette
- Department of Chemistry, Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Roman Szostak
- Department of Chemistry, Wroclaw University F. Joliot-Curie 14 Wroclaw 50-383 Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University 73 Warren Street Newark NJ 07102 USA
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5
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Rahman MM, Zhao Q, Meng G, Szostak R, Szostak M. [Ni(Np#)(η5-Cp)Cl]: Flexible, Sterically Bulky, Well-Defined, Highly Reactive Complex for Nickel-Catalyzed Cross-Coupling. Organometallics 2022; 41:2597-2604. [PMID: 38031540 PMCID: PMC10686542 DOI: 10.1021/acs.organomet.2c00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ni-NHCs (NHC = N-heterocyclic carbene) have become an increasingly important class of complexes in catalysis and organometallic chemistry owing to the beneficial features of nickel as an abundant 3d metal. However, the development of well-defined and air-stable Ni-NHC complexes for cross-coupling has been more challenging than with Pd-NHC catalysis because of less defined reactivity trends of NHC ancillary ligands coordinated to Ni. Herein, we report the synthesis and catalytic activity of well-defined [Ni(NHC)(η5-Cp)Cl] complexes bearing recently commercialized IPr# family of ligands (Sigma Aldrich) and versatile cyclopentadienyl throw-away ligand. The NHC ligands, IPr#, Np# and BIAN-IPr#, are prepared by robust and modular peralkylation of anilines. Most crucially, we identified [Ni(Np#)(η5-Cp)Cl] as a highly reactive [Ni(NHC)(η5-Cp)Cl] complex, with the reactivity outperforming the classical [Ni(IPr)(η5-Cp)Cl] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene). These [Ni(NHC)(η5-Cp)Cl] precatalysts were employed in the Suzuki and Kumada cross-coupling of aryl chlorides and aryl bromides. Computational studies were conducted to determine steric effect and bond order analysis. Considering the attractive features of well-defined Ni-NHCs, we anticipate that this class of bulky and flexible Ni-NHC catalysts will find broad application in organic synthesis and catalysis.
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Affiliation(s)
- Md Mahbubur Rahman
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Qun Zhao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Guangrong Meng
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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6
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Bulak E, Dogan I, Varnali T, Schwederski B, Gunal SE, Lönnecke P, Bubrin M, Kaim W. An Acyclic Diaminocarbene Complex of Platinum Formed by Desulfurization of 1,3‐Bis(3‐methylpyridin‐2‐yl)thiourea. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ece Bulak
- Bogazici University Department of Chemistry, Bebek 34342 Istanbul Turkey
| | - Ilknur Dogan
- Bogazici University Department of Chemistry, Bebek 34342 Istanbul Turkey
| | - Tereza Varnali
- Bogazici University Department of Chemistry, Bebek 34342 Istanbul Turkey
| | - Brigitte Schwederski
- University of Stuttgart Institute of Inorganic Chemistry Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Sule Erol Gunal
- Bogazici University Department of Chemistry, Bebek 34342 Istanbul Turkey
| | - Peter Lönnecke
- University of Leipzig Fakultät für Chemie und Mineralogie Johannisallee 29 04103 Leipzig Germany
| | - Martina Bubrin
- University of Stuttgart Institute of Inorganic Chemistry Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Kaim
- University of Stuttgart Institute of Inorganic Chemistry Pfaffenwaldring 55 70569 Stuttgart Germany
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7
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Bugaenko DI, Yurovskaya MA, Karchava AV. Reaction of Pyridine‐
N
‐Oxides with Tertiary sp
2
‐
N
‐Nucleophiles: An Efficient Synthesis of Precursors for
N
‐(Pyrid‐2‐yl)‐Substituted
N
‐Heterocyclic Carbenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Cabeza JA, García-Álvarez P, Laglera-Gándara CJ. The Transition Metal Chemistry of PGeP and PSnP Pincer Heavier Tetrylenes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901248] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Carlos J. Laglera-Gándara
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
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9
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Nickel‐Catalyzed Heck Reaction of Aryl Halides and Terminal Olefins Using Zinc/Triflate Ligand/DMA/TBAB. ChemistrySelect 2019. [DOI: 10.1002/slct.201901131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Balaboina R, Thirukovela N, Kankala S, Balasubramanian S, Bathula SR, Vadde R, Jonnalagadda SB, Vasam CS. Synergistic Catalysis of Ag(I) and Organo‐
N
‐heterocyclic Carbenes: One‐Pot Synthesis of New Anticancer Spirooxindole‐1,4‐dihydropyridines. ChemistrySelect 2019. [DOI: 10.1002/slct.201803507] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ramesh Balaboina
- Department of ChemistryKakatiya University Warangal- 506009, Telangana State India
| | | | - Shravankumar Kankala
- Department of ChemistryKakatiya University Warangal- 506009, Telangana State India
| | - Sridhar Balasubramanian
- X-ray Crystallography DivisionCSIR–Indian Institute of Chemical Technology Hyderabad- 500007, Telangana State India
| | - Surendar Reddy Bathula
- Division of Natural Product ChemistryCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana State India
| | - Ravinder Vadde
- Department of ChemistryKakatiya University Warangal- 506009, Telangana State India
| | - Sreekantha B Jonnalagadda
- School of Chemistry and PhysicsUniversity of Kwazulu-NatalWestville Campus, Chiltern Hills, Durban- 4000, South Africa
| | - Chandra Sekhar Vasam
- Department of Pharmaceutical ChemistryTelangana University Nizamabad- 503322, Telangana State India
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11
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12
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Hettmanczyk L, Suntrup L, Klenk S, Hoyer C, Sarkar B. Heteromultimetallic Complexes with Redox-Active Mesoionic Carbenes: Control of Donor Properties and Redox-Induced Catalysis. Chemistry 2016; 23:576-585. [DOI: 10.1002/chem.201604615] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Sinja Klenk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Carolin Hoyer
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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13
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Álvarez-Rodríguez L, Cabeza JA, Fernández-Colinas JM, García-Álvarez P, Polo D. Amidinatogermylene Metal Complexes as Homogeneous Catalysts in Alcoholic Media. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00426] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lucía Álvarez-Rodríguez
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Javier A. Cabeza
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - José M. Fernández-Colinas
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Diego Polo
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
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Wurm T, Mulks F, Böhling CRN, Riedel D, Zargaran P, Rudolph M, Rominger F, Hashmi ASK. Synthesis of Different Classes of Six-Membered Gold(I) NHC Complexes by the Isonitrile Route. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00023] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | | | | | | | | | - A. Stephen K. Hashmi
- Chemistry
Department, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
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15
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Lefebvre JF, Longevial JF, Molvinger K, Clément S, Richeter S. Porphyrins fused to N-heterocyclic carbene palladium complexes as tunable precatalysts in Mizoroki–Heck reactions: How the porphyrin can modulate the apparent catalytic activity? CR CHIM 2016. [DOI: 10.1016/j.crci.2015.03.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Maity R, Verma A, van der Meer M, Hohloch S, Sarkar B. Palladium Complexes Bearing Mesoionic Carbene Ligands: Applications in α-Arylation, α-Methylation and Suzuki-Miyaura Coupling Reactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501031] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Mechanism of the sequential activation of two C–H bonds of a NHC N-methyl group on a triruthenium carbonyl cluster. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1729-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Mangalum A, Htet Y, Roe DA, McMillen CD, Tennyson AG. Net charge effects in N-heterocyclic carbene–ruthenium complexes with similar oxidation states and coordination geometries. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Bolje A, Hohloch S, van der Meer M, Košmrlj J, Sarkar B. Ru(II), Os(II), and Ir(III) complexes with chelating pyridyl-mesoionic carbene ligands: structural characterization and applications in transfer hydrogenation catalysis. Chemistry 2015; 21:6756-64. [PMID: 25752929 DOI: 10.1002/chem.201406481] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Indexed: 11/07/2022]
Abstract
Chelating ligands with one pyridine donor and one mesoionic carbene donor are fast establishing themselves as privileged ligands in homogeneous catalysis. The synthesis of several new Ir(III)-Cp*- and Os(II)-Cym complexes (Cp* = pentamethylcyclopentadienyl, Cym = p-cymene=4-isopropyl-toluene) derived from chelating pyridyltriazolylidenes where the additional pyridine donor was incorporated via the azide part of the triazole is presented. Furthermore, different 4-substituted phenylacetylene building blocks have been used to introduce electronic fine-tuning in the ligands. The ligands thus can be generally described as 4-(4-R-phenyl)-3-methyl-1-(pyridin-2-yl)-1H-1,2,3-triazol-5-ylidene (with R being H (L(1)), Me (L(2)), OMe (L(3)), CN (L(4)), CF3 (L(5)), Br (L(6)) or NO2 (L(7))). The corresponding complexes (Ir-1 to Ir-7 and Os-1 to Os-7) were characterized by standard spectroscopic methods, and the expected three-legged, piano-stool type coordination was unambiguously confirmed by X-ray diffraction analysis of selected compounds. Together with Ru(II) analogues previously reported by us, a total of 21 complexes were tested as (pre)catalysts for the transfer hydrogenation of carbonyl groups, showing a remarkable reactivity even at very low catalyst loadings. The electronic effects of the ligands as well as different substrates were investigated. Some mechanistic elucidations are also presented.
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Affiliation(s)
- Aljoša Bolje
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universtität Berlin, Fabeckstrasse 34-36, 14195, Berlin (Germany); Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana (Slovenia)
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20
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Synthesis, coordination chemistry and reactivity of transition metal complexes supported by a chelating benzimidazolylidene carboxylate ligand. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Ghadwal RS, Reichmann SO, Herbst-Irmer R. Palladium-Catalyzed Direct C2-Arylation of an N-Heterocyclic Carbene: An Atom-Economic Route to Mesoionic Carbene Ligands. Chemistry 2015; 21:4247-51. [DOI: 10.1002/chem.201405923] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Indexed: 01/26/2023]
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22
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Palladium-ADC complexes as efficient catalysts in copper-free and room temperature Sonogashira coupling. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.08.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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23
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Quadri CC, Le Roux E. Copolymerization of cyclohexene oxide with CO2 catalyzed by tridentate N-heterocyclic carbene titanium(IV) complexes. Dalton Trans 2014; 43:4242-6. [PMID: 24292280 DOI: 10.1039/c3dt52804a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of complexes based on titanium(IV) bearing a bisanionic mer-tridentate N-heterocyclic carbene ligand were investigated for the copolymerization of cyclohexene oxide with CO2. Upon addition of [PPN]X' salts, all complexes were found to be active and highly selective toward the formation of poly(cyclohexene oxide-alt-carbon dioxide).
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Affiliation(s)
- Coralie C Quadri
- Kjemisk Institutt, Universitetet i Bergen, Allégaten 41, N-5007, Bergen, Norway.
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24
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Effects of solvent and base on the palladium-catalyzed amination: PdCl2(Ph3P)2/Ph3P-catalyzed selective arylation of primary anilines with aryl bromides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Maity R, Hohloch S, Su CY, van der Meer M, Sarkar B. Cyclometalated mono- and dinuclear Ir(III) complexes with "click"-derived triazoles and mesoionic carbenes. Chemistry 2014; 20:9952-61. [PMID: 25044321 DOI: 10.1002/chem.201402838] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Indexed: 11/12/2022]
Abstract
Orthometalation at Ir(III) centers is usually facile, and such orthometalated complexes often display intriguing electronic and catalytic properties. By using a central phenyl ring as C-H activation sites, we present here mono- and dinuclear Ir(III) complexes with "click"-derived 1,2,3-triazole and 1,2,3-triazol-5-ylidene ligands, in which the wingtip phenyl groups in the aforementioned ligands are additionally orthometalated and bind as carbanionic donors to the Ir(III) centers. Structural characterization of the complexes reveal a piano stool-type of coordination around the metal centers with the "click"-derived ligands bound either with C^N or C^C donor sets to the Ir(III) centers. Furthermore, whereas bond localization is observed within the 1,2,3-triazole ligands, a more delocalized situation is found in their 1,2,3-triazol-5-ylidene counterparts. All complexes were subjected to catalytic tests for the transfer hydrogenation of benzaldehyde and acetophenone. The dinuclear complexes turned out to be more active than their mononuclear counterparts. We present here the first examples of stable, isomer-pure, dinuclear cyclometalated Ir(III) complexes with poly-mesoionic-carbene ligands.
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Affiliation(s)
- Ramananda Maity
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin (Germany), Fax: (+49) 30-838-53310
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26
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Fliedel C, Mameri S, Dagorne S, Avilés T. Controlled ring-opening polymerization of trimethylene carbonate and access to PTMC-PLA block copolymers mediated by well-definedN-heterocyclic carbene zinc alkoxides. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3154] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christophe Fliedel
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica 2829-516 Portugal
- Institut de Chimie de Strasbourg; CNRS-Université de Strasbourg; 67000 Strasbourg France
| | - Samir Mameri
- Institut de Chimie de Strasbourg; CNRS-Université de Strasbourg; 67000 Strasbourg France
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg; CNRS-Université de Strasbourg; 67000 Strasbourg France
| | - Teresa Avilés
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica 2829-516 Portugal
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27
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Bajo S, Esteruelas MA, López AM, Oñate E. Selective meta-C–H Bond Activation of Substituted 1,3-Chlorobenzenes Promoted by an Osmium Pyridyl Complex. Organometallics 2014. [DOI: 10.1021/om500204s] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sonia Bajo
- Departamento
de Quı́mica Inorgánica, Instituto de Sı́ntesis
Quı́mica y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento
de Quı́mica Inorgánica, Instituto de Sı́ntesis
Quı́mica y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Ana M. López
- Departamento
de Quı́mica Inorgánica, Instituto de Sı́ntesis
Quı́mica y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento
de Quı́mica Inorgánica, Instituto de Sı́ntesis
Quı́mica y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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28
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Hohloch S, Deibel N, Schweinfurth D, Frey W, Sarkar B. Structural Characterization, Solution Dynamics, and Reactivity of Palladium Complexes with Benzimidazolin- 2-ylidene N-Heterocyclic Carbene Ligands. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301339] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Valente C, Pompeo M, Sayah M, Organ MG. Carbon–Heteroatom Coupling Using Pd-PEPPSI Complexes. Org Process Res Dev 2014. [DOI: 10.1021/op400278d] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cory Valente
- The Dow Chemical
Company, 400 Arcola Road, Collegeville, Pennsylvania, United States 19426
| | - Matthew Pompeo
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
| | - Mahmoud Sayah
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
| | - Michael G. Organ
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
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30
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Hubbert C, Breunig M, Carroll KJ, Rominger F, Hashmi ASK. Simple Synthesis of New Mixed Isocyanide-NHC-Platinum(II) Complexes and Their Catalytic Activity. Aust J Chem 2014. [DOI: 10.1071/ch13546] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Using the new modular and convergent approach to isocyanide-N-hetrocyclic carbene-platinum(ii) complexes, eight new compounds have been synthesised. For three of these, detailed structural data could be obtained by X-ray crystal structure analyses. This new family of organoplatinum complexes is catalytically active for hydrosilylation reactions; styrene and phenylacetylene could be used as substrates; triethylsilane and 1,1,1,3,5,5,5-heptamethyltrisiloxane could be used as reagents. With some of the new platinum pre-catalysts, excellent regioselectivities of up to 98 : 2 could be obtained, and turnover numbers up to 840 were achieved.
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31
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Hohloch S, Suntrup L, Sarkar B. Arene–Ruthenium(II) and −Iridium(III) Complexes with “Click”-Based Pyridyl-triazoles, Bis-triazoles, and Chelating Abnormal Carbenes: Applications in Catalytic Transfer Hydrogenation of Nitrobenzene. Organometallics 2013. [DOI: 10.1021/om4009185] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Stephan Hohloch
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Lisa Suntrup
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Biprajit Sarkar
- Institut
für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
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32
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Hohloch S, Scheiffele D, Sarkar B. Activating Azides and Alkynes for the Click Reaction with [Cu(aNHC)2I] or [Cu(aNHC)2]+(aNHC = Triazole-Derived Abnormal Carbenes): Structural Characterization and Catalytic Properties. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300150] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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33
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Harkness MB, Alvarado E, Badaj AC, Skrela BC, Fan L, Lavoie GG. Coordination and Reactivity Study of Group 4 and 10 Transition Metal Complexes of N-Imidazol-2-ylidene-N′-p-tolylureate and Thioureate Ligands. Organometallics 2013. [DOI: 10.1021/om400220v] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Michael B. Harkness
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
| | - Edwin Alvarado
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
| | - Anna C. Badaj
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
| | - Barbara C. Skrela
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
| | - Louie Fan
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
| | - Gino G. Lavoie
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario,
M3J 1P3, Canada
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34
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Cabeza JA, García-Álvarez P, Polo D. Expanding the coordination chemistry of donor-stabilized group-14 metalenes. Dalton Trans 2013; 42:1329-32. [PMID: 23160752 DOI: 10.1039/c2dt32654j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transformation of an amidinate germylene, equipped with just one accessible lone pair of electrons on the Ge atom, into a bidentate 4-electron donor κ(2)Ge,N-ligand, has been achieved for the first time, opening new doors to the non-carbene-like coordination chemistry of heavier carbene analogues.
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Affiliation(s)
- Javier A Cabeza
- Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain.
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35
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Tardiff BJ, Hesp KD, Ferguson MJ, Stradiotto M. Generation of [(IPr)Pd(PR2Cl)] complexes via P-Cl reductive elimination. Dalton Trans 2012; 41:7883-5. [PMID: 22180867 DOI: 10.1039/c1dt11910a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of [(IPr)Pd(Cl)(2)(PR(2)H)] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene; R = Cy, tBu, or 1-Ad) with NaN(SiMe(3))(2) generated isolable [(IPr)Pd(PR(2)Cl)] complexes (68-75%) that have been crystallographically characterized. The formation of these mixed-ligand Pd(0) species in this manner corresponds to an unusual net dehydrohalogenation/P-Cl reductive elimination sequence.
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Affiliation(s)
- Bennett J Tardiff
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
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36
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Su HL, Pérez LM, Lee SJ, Reibenspies JH, Bazzi HS, Bergbreiter DE. Studies of Ligand Exchange in N-Heterocyclic Carbene Silver(I) Complexes. Organometallics 2012. [DOI: 10.1021/om300340w] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Haw-Lih Su
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Lisa M. Pérez
- Laboratory for Molecular Simulation, Texas A&M University, P.O. Box 30012, College Station, Texas 77843-3255, United States
| | - Sheng-Jui Lee
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan 115,
Republic of China
| | - Joseph H. Reibenspies
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Hassan S. Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - David E. Bergbreiter
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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37
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Credendino R, Falivene L, Cavallo L. π-Face donation from the aromatic N-substituent of N-heterocyclic carbene ligands to metal and its role in catalysis. J Am Chem Soc 2012; 134:8127-35. [PMID: 22524408 DOI: 10.1021/ja212133j] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this work, we calculate the redox potential in a series of Ir and Ru complexes bearing a N-heterocyclic carbene (NHC) ligand presenting different Y groups in the para position of the aromatic N-substituent. The calculated redox potentials excellently correlate with the experimental ΔE(1/2) potentials, offering a handle to rationalize the experimental findings. Analysis of the HOMO of the complexes before oxidation suggests that electron-donating Y groups destabilize the metal centered HOMO. Energy decomposition of the metal-NHC interaction indicates that electron-donating Y groups reinforce this interaction in the oxidized complexes. Analysis of the electron density in the reduced and oxidized states of representative complexes indicates a clear donation from the C(ipso) of the N-substituents to an empty d orbital on the metal. In case of the Ru complexes, this mechanism involves the Ru-alkylidene moiety. All of these results suggest that electron-donating Y groups render the aromatic N-substituent able to donate more density to electron-deficient metals through the C(ipso) atom. This conclusion suggests that electron-donating Y groups could stabilize higher oxidation states during catalysis. To test this hypothesis, we investigated the effect of differently donating Y groups in model reactions of Ru-catalyzed olefin metathesis and Pd-catalyzed C-C cross-coupling. Consistent with the experimental results, calculations indicate an easier reaction pathway if the N-substituent of the NHC ligand presents an electron-donating Y group.
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Affiliation(s)
- Raffaele Credendino
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
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38
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Chay RS, Luzyanin KV, Kukushkin VY, Guedes da Silva MFC, Pombeiro AJL. Novel Palladium–Aminocarbene Species Derived from Metal-Mediated Coupling of Isonitriles and 1,3-Diiminoisoindoline: Synthesis and Catalytic Application in Suzuki–Miyaura Cross-Coupling. Organometallics 2012. [DOI: 10.1021/om300020j] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rogério S. Chay
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001,
Lisbon, Portugal
| | - Konstantin V. Luzyanin
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001,
Lisbon, Portugal
- St.Petersburg State University, 198504 Stary Petergof, Russian Federation
| | - Vadim Yu. Kukushkin
- St.Petersburg State University, 198504 Stary Petergof, Russian Federation
- Institute of Macromolecular Compounds of Russian Academy of Sciences, Bolshoii Pr.
31, 199004 St.Petersburg, Russian Federation
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001,
Lisbon, Portugal
- Universidade Lusófona de Humanidades e Tecnologias, ULHT Lisbon, 1749-024
Lisbon, Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001,
Lisbon, Portugal
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39
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Karni M, Apeloig Y. Conjugation, Resonance, and Stability in N-Heterocyclic Silylenes and in Phosphorus Ylide Substituted Silylenes. Organometallics 2012. [DOI: 10.1021/om300031x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Miriam Karni
- Schulich Faculty of Chemistry and the Lise Meitner-Minerva
Center for Computational Quantum Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Yitzhak Apeloig
- Schulich Faculty of Chemistry and the Lise Meitner-Minerva
Center for Computational Quantum Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
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40
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Cabeza JA, García-Álvarez P, Polo D. Synthesis of Mixed Tin–Ruthenium and Tin–Germanium–Ruthenium Carbonyl Clusters from [Ru3(CO)12] and Diaminometalenes (M = Sn, Ge). Inorg Chem 2012; 51:2569-76. [DOI: 10.1021/ic202532u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier A. Cabeza
- Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Diego Polo
- Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
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41
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Paulose TAP, Wu SC, Olson JA, Chau T, Theaker N, Hassler M, Quail JW, Foley SR. Bis-diimidazolylidine complexes of nickel: Investigations into nickel catalyzed coupling reactions. Dalton Trans 2012; 41:251-60. [DOI: 10.1039/c1dt10858a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Albrecht M, Maji P, Häusl C, Monney A, Müller-Bunz H. N-Heterocyclic carbene bonding to cobalt porphyrin complexes. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.08.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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43
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Wang X, Sobota M, Kohler FTU, Morain B, Melcher BU, Laurin M, Wasserscheid P, Libuda J, Meyer K. Functional nickel complexes of N-heterocyclic carbeneligands in pre-organized and supported thin film materials. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13416g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Evaluation of catalytic properties of aminocarbene species derived from the integration between 3-iminoisoindolin-1-ones and palladium-bound isonitriles in Suzuki–Miyaura cross-coupling. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.09.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Deibel N, Schweinfurth D, Hohloch S, Sarkar B. Characterization of [Pd(pap)(NHC)I2]n (n=+1, 0, −1; pap=phenylazopyridine; NHC=N-heterocyclic carbene): Unusual coordination mode of pap and non-innocent behavior of NHC. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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46
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47
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Yang B, Zhang Q, Zhong J, Huang S, Zhang HX. Ab initio and DFT study of luminescent cyclometalated N-heterocyclic carbene organogold(III) complexes. J Mol Model 2011; 18:2543-51. [PMID: 22038458 DOI: 10.1007/s00894-011-1261-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 09/27/2011] [Indexed: 10/15/2022]
Abstract
The structures of versatile N-heterocyclic carbene-containing Au(III) complexes in the ground and low-lying excited states have been optimized at the B3LYP functional and the single-excitation configuration interaction (CIS) method, respectively. The spectral properties are predicted with time-dependent density functional theory (TDDFT). In addition, the charge transport quality has been estimated approximately by the predicted reorganization energy (λ). As revealed from the calculations, the introduction of methyl has a bigger influence on the spectral properties than phenyl. Furthermore, we find that changing the auxiliary ligand could tune the charge transfer properties.
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Affiliation(s)
- Baozhu Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu, People's Republic of China
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48
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Affiliation(s)
- Hwimin Seo
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - David R. Snead
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Sukwon Hong
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
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49
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Samanta T, Kumar Rana B, Roymahapatra G, Giri S, Mitra P, Pallepogu R, Kumar Chattaraj P, Dinda J. Synthesis, structure and theoretical studies of Hg(II)–NH carbene complex of annulated ligand pyridinyl[1,2-a]{2-pyridylimidazol}-3-ylidene hexaflurophosphate. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.05.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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50
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Molnár Á. Efficient, selective, and recyclable palladium catalysts in carbon-carbon coupling reactions. Chem Rev 2011; 111:2251-320. [PMID: 21391571 DOI: 10.1021/cr100355b] [Citation(s) in RCA: 768] [Impact Index Per Article: 59.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Árpád Molnár
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
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