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van Vuuren E, Malan FP, Cordier W, Nell M, Landman M. Self-Isomerized–Cyclometalated Rhodium NHC Complexes as Active Catalysts in the Hydrosilylation of Internal Alkynes. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Estefan van Vuuren
- Department of Chemistry, University of Pretoria, Hatfield, Pretoria, South Africa 0002
| | - Frederick P. Malan
- Department of Chemistry, University of Pretoria, Hatfield, Pretoria, South Africa 0002
| | - Werner Cordier
- Department of Pharmacology, University of Pretoria, Arcadia, Pretoria, South Africa 0007
| | - Margo Nell
- Department of Pharmacology, University of Pretoria, Arcadia, Pretoria, South Africa 0007
| | - Marilé Landman
- Department of Chemistry, University of Pretoria, Hatfield, Pretoria, South Africa 0002
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2
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Evans KJ, Morton PA, Luz C, Miller C, Raine O, Lynam JM, Mansell SM. Rhodium Indenyl NHC and Fluorenyl-Tethered NHC Half-Sandwich Complexes: Synthesis, Structures and Applications in the Catalytic C-H Borylation of Arenes and Alkanes. Chemistry 2021; 27:17824-17833. [PMID: 34653269 PMCID: PMC9299238 DOI: 10.1002/chem.202102961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 01/11/2023]
Abstract
Indenyl (Ind) rhodium N-heterocyclic carbene (NHC) complexes [Rh(η5 -Ind)(NHC)(L)] were synthesised for 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) with L=C2 H4 (1), CO (2 a) and cyclooctene (COE; 3), for 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene (SIMes) with L=CO (2 b) and COE (4), and 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) with L=CO (2 c) and COE (5). Reaction of SIPr with [Rh(Cp*)(C2 H4 )2 ] did not give the desired SIPr complex, thus demonstrating the "indenyl effect" in the synthesis of 1. Oxidative addition of HSi(OEt)3 to 3 proceeded under mild conditions to give the Rh silyl hydride complex [Rh(Ind){Si(OEt)3 }(H)(SIPr)] (6) with loss of COE. Tethered-fluorenyl NHC rhodium complexes [Rh{(η5 -C13 H8 )C2 H4 N(C)C2 Hx NR}(L)] (x=4, R=Dipp, L=C2 H4 : 11; L=COE: 12; L=CO: 13; R=Mes, L=COE: 14; L=CO: 15; x=2, R=Me, L=COE: 16; L=CO: 17) were synthesised in low yields (5-31 %) in comparison to good yields for the monodentate complexes (49-79 %). Compounds 3 and 1, which contain labile alkene ligands, were successful catalysts for the catalytic borylation of benzene with B2 pin2 (Bpin=pinacolboronate, 97 and 93 % PhBpin respectively with 5 mol % catalyst, 24 h, 80 °C), with SIPr giving a more active catalyst than SIMes or IMes. Fluorenyl-tethered NHC complexes were much less active as borylation catalysts, and the carbonyl complexes were inactive. The borylation of toluene, biphenyl, anisole and diphenyl ether proceeded to give meta substitutions as the major product, with smaller amounts of para substitution and almost no ortho product. The borylation of octane and decane with B2 pin2 at 120 and 140 °C, respectively, was monitored by 11 B NMR spectroscopy, which showed high conversions into octyl and decylBpin over 4-7 days, thus demonstrating catalysed sp3 C-H borylation with new piano stool rhodium indenyl complexes. Irradiation of the monodentate complexes with 400 or 420 nm light confirmed the ready dissociation of C2 H4 and COE ligands, whereas CO complexes were inert. Evidence for C-H bond activation in the alkyl groups of the NHC ligands was obtained.
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Affiliation(s)
- Kieren J Evans
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Paul A Morton
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Christian Luz
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Callum Miller
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Olivia Raine
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Jason M Lynam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Stephen M Mansell
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
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3
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Benaissa I, Gajda K, Vendier L, Lugan N, Kajetanowicz A, Grela K, Michelet V, César V, Bastin S. An Anionic, Chelating C(sp 3)/NHC ligand from the Combination of an N-heterobicyclic Carbene and Barbituric Heterocycle. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Idir Benaissa
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Katarzyna Gajda
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Laure Vendier
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Noël Lugan
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Anna Kajetanowicz
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Véronique Michelet
- University Côte d’Azur, Institut de Chimie de Nice, UMR 7272 CNRS Parc Valrose, Faculté des Sciences, 06100 Nice, France
| | - Vincent César
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Stéphanie Bastin
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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4
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Brenner E, Matt D, Almallah H, Gourlaouen C, Hissler M. Stereochemical Control of Tricoordinate Copper(I) Complexes Based on N-(9-Alkyl-9-fluorenyl)-Substituted Heterocyclic Carbenes. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1706194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractA series of tricoordinate copper(I) complexes of general formula [Cu(Et
F-NHC)(2,2′-dipyridylamine)][BF4], in which Et
F-NHC represents an imidazol-2-ylidene ligand bearing a 9-ethyl-9-fluorenyl N-substituent have been synthesised stepwise from appropriate N-arylimidazoles. All complexes are remarkably air-stable, both in solution and in the solid state. X-ray diffraction studies revealed that in three of the complexes the fluorenylidene plane and the dipyridylamine (dpa) unit undergo intramolecular π–π stacking. The resulting bending of the fluorenilydene plane towards the metal atom is likely to contribute to maintain the trigonal planar geometry of the [Cu–C,N,N] unit upon binding of exogenous substrates, thereby considerably increasing complex stability.
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Affiliation(s)
- Eric Brenner
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie, UMR 7177 CNRS, Université de Strasbourg
| | - Dominique Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie, UMR 7177 CNRS, Université de Strasbourg
| | - Hamze Almallah
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse, Institut de Chimie, UMR 7177 CNRS, Université de Strasbourg
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique, Institut de Chimie, UMR 7177 CNRS, Université de Strasbourg
| | - Muriel Hissler
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Groupe ‘Phosphore et Matériaux Moléculaires’
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5
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van Vuuren E, Malan FP, Landman M. Multidentate NHC complexes of group IX metals featuring carbon-based tethers: Synthesis and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213731] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Evans KJ, Morton PA, Sangster C, Mansell SM. One-step synthesis of heteroleptic rare-earth amide complexes featuring fluorenyl-tethered N-heterocyclic carbene ligands. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Evans KJ, Mansell SM. Functionalised N-Heterocyclic Carbene Ligands in Bimetallic Architectures. Chemistry 2020; 26:5927-5941. [PMID: 31981386 PMCID: PMC7317719 DOI: 10.1002/chem.201905510] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Indexed: 12/18/2022]
Abstract
N-Heterocyclic carbenes (NHCs) have become immensely successful ligands in coordination chemistry and homogeneous catalysis due to their strong terminal σ-donor properties. However, by targeting NHC ligands with additional functionalisation, a new area of NHC coordination chemistry has developed that has enabled NHCs to be used to build up bimetallic and multimetallic architectures. This minireview covers the development of functionalised NHC ligands that incorporate additional donor sites in order to coordinate two or more metal atoms. This can be through the N-atom of the NHC ring, through a donor group attached to the N-atom or the carbon backbone, coordination of the π-bond or an annulated π-donor on the backbone, or through direct metalation of the backbone.
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Affiliation(s)
- Kieren J. Evans
- Institute of Chemical SciencesHeriot-Watt UniversityEdinburghEH14 4ASUK
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8
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Evans KJ, Campbell CL, Haddow MF, Luz C, Morton PA, Mansell SM. Lithium Complexes with Bridging and Terminal NHC Ligands: The Decisive Influence of an Anionic Tether. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kieren J. Evans
- Institute of Chemical Sciences Heriot‐Watt University EH14 4AS Edinburgh UK
| | | | - Mairi F. Haddow
- Institute of Chemical Sciences Heriot‐Watt University EH14 4AS Edinburgh UK
| | - Christian Luz
- Institute of Chemical Sciences Heriot‐Watt University EH14 4AS Edinburgh UK
| | - Paul A. Morton
- Institute of Chemical Sciences Heriot‐Watt University EH14 4AS Edinburgh UK
| | - Stephen M. Mansell
- Institute of Chemical Sciences Heriot‐Watt University EH14 4AS Edinburgh UK
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9
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10
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Evans KJ, Mansell SM. Synergic Deprotonation Generates Alkali-Metal Salts of Tethered Fluorenide-NHC Ligands Co-Complexed to Alkali-Metal Amides. Chemistry 2019; 25:3766-3769. [PMID: 30667554 PMCID: PMC6492165 DOI: 10.1002/chem.201806278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Indexed: 11/23/2022]
Abstract
Synergic combinations of alkali-metal hydrocarbyl/amide reagents were used to synthesise saturated N-heterocyclic carbene (NHC) ligands tethered to a fluorenide anion through deprotonation of a spirocyclic precursor, whereas conventional bases were not successful. The Li2 derivatives displayed a bridging amide between two Li atoms within the fluorenide-NHC pocket, whereas the Na2 and K2 analogues displayed extended solid-state structures with the fluorenide-NHC ligand chelating one alkali metal centre.
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Affiliation(s)
- Kieren J. Evans
- Institute of Chemical SciencesHeriot-Watt UniversityEdinburghEH14 4ASUK
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11
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Schmidt BM, Ho HA, Basemann K, Ellern A, Windus TL, Sadow AD. Redox Chemistry of Bis(oxazolinyl)cyclopentadienyl and -fluorenyl Rhodium and Iridium Organometallic Compounds. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bradley M. Schmidt
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Hung-An Ho
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Kevin Basemann
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Arkady Ellern
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Theresa L. Windus
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Department of Chemistry, Iowa State University, 1605 Gilman
Hall, 2415 Osborn Drive, Ames, Iowa 50011, United States
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12
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Nesterov V, Reiter D, Bag P, Frisch P, Holzner R, Porzelt A, Inoue S. NHCs in Main Group Chemistry. Chem Rev 2018; 118:9678-9842. [PMID: 29969239 DOI: 10.1021/acs.chemrev.8b00079] [Citation(s) in RCA: 518] [Impact Index Per Article: 86.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Since the discovery of the first stable N-heterocyclic carbene (NHC) in the beginning of the 1990s, these divalent carbon species have become a common and available class of compounds, which have found numerous applications in academic and industrial research. Their important role as two-electron donor ligands, especially in transition metal chemistry and catalysis, is difficult to overestimate. In the past decade, there has been tremendous research attention given to the chemistry of low-coordinate main group element compounds. Significant progress has been achieved in stabilization and isolation of such species as Lewis acid/base adducts with highly tunable NHC ligands. This has allowed investigation of numerous novel types of compounds with unique electronic structures and opened new opportunities in the rational design of novel organic catalysts and materials. This Review gives a general overview of this research, basic synthetic approaches, key features of NHC-main group element adducts, and might be useful for the broad research community.
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Affiliation(s)
- Vitaly Nesterov
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Dominik Reiter
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Prasenjit Bag
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Philipp Frisch
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Richard Holzner
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Amelie Porzelt
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
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13
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Karataş MO, Di Giuseppe A, Passarelli V, Alıcı B, Pérez-Torrente JJ, Oro LA, Özdemir I, Castarlenas R. Pentacoordinated Rhodium(I) Complexes Supported by Coumarin-Functionalized N-Heterocyclic Carbene Ligands. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00750] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mert Olgun Karataş
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Department
of Chemistry, Faculty of Sciences, Inonu University, 44280 Malatya, Turkey
| | - Andrea Di Giuseppe
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Centro Universitario de la Defensa, Ctra Huesca S/N, 50090 Zaragoza, Spain
| | - Bülent Alıcı
- Department
of Chemistry, Faculty of Sciences, Inonu University, 44280 Malatya, Turkey
| | - Jesús J. Pérez-Torrente
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ismail Özdemir
- Department
of Chemistry, Faculty of Sciences, Inonu University, 44280 Malatya, Turkey
| | - Ricardo Castarlenas
- Departamento
de Química Inorgánica − Instituto de Síntesis
Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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14
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Okayama T, Watanabe T, Hatayama Y, Ishihara S, Yamaguchi Y. Transformation of NHC·BEt3 into AgCl·NHC: Efficiently preparative method for early–late heterobimetallic complexes using indenyl-functionalized N-heterocyclic carbene as a bridging ligand. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Roselló-Merino M, Mansell SM. Synthesis and reactivity of fluorenyl-tethered N-heterocyclic stannylenes. Dalton Trans 2016; 45:6282-93. [PMID: 26757790 DOI: 10.1039/c5dt04060d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A fluorenyl (Fl) tethered diamine was synthesised by nucleophilic substitution of (bromoethyl)fluorene with a diisopropylphenyl (Dipp) substituted diamine to give FlC2H4N(H)C2H4N(H)Dipp (1a) in good yield (85%). Lithiation of 1a with n-BuLi proceeded with coordination of the Li cation to the aromatic fluorenide ring (2), and with subsequent equivalents of n-BuLi, the secondary amines were then sequentially deprotonated. A fluorenyl-tethered N-heterocyclic stannylene (NHSn) was synthesised from the reaction of 1a with SnN''2 {N'' = N(SiMe3)2} as a neutral dimeric species (5), and this was deprotonated with LiN'' to give the corresponding dianionic fluorenide-tethered NHSn (6). Reactions of [{Rh(cod)(μ-Cl)}2] with the mono-deprotonated ligand 2 led to the formation of a mixed-donor amide-amine Rh(i) compound (7), whereas reactions with the anionic NHSn 6 led to a Rh-fluorenyl complex of low stability with an uncoordinated pendent NHSn arm, which X-ray crystallography showed to be dimeric in the solid state.
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Affiliation(s)
- Marta Roselló-Merino
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
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16
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Perimidin-2-ylidene rhodium(I) complexes; unexpected halogen exchange and catalytic activities in transfer hydrogenation reaction. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.04.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Postigo L, Lopes R, Royo B. Dehydrogenative coupling of aromatic thiols with Et3SiH catalysed by N-heterocyclic carbene nickel complexes. Dalton Trans 2014; 43:853-8. [DOI: 10.1039/c3dt52052h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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18
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Benhamou L, Bastin S, Lugan N, Lavigne G, César V. Metal-assisted conversion of an N-ylide mesomeric betaine into its carbenic tautomer: generation of N-(fluoren-9-yl)imidazol-2-ylidene complexes. Dalton Trans 2014; 43:4474-82. [DOI: 10.1039/c3dt53089b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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19
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Fernández FE, Puerta MDC, Valerga P. Functionalized N-Heterocyclic Carbene Nonspectator Ligands upon Internal Alkyne Activation Reactions. Inorg Chem 2013; 52:6502-9. [DOI: 10.1021/ic400433z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Francys E. Fernández
- Departamento de Ciencia
de los Materiales e Ingeniería Metalúrgica y Química
Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - María del Carmen Puerta
- Departamento de Ciencia
de los Materiales e Ingeniería Metalúrgica y Química
Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Pedro Valerga
- Departamento de Ciencia
de los Materiales e Ingeniería Metalúrgica y Química
Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
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20
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Fernández FE, Puerta MC, Valerga P. Picolyl-NHC hydrotris(pyrazolyl)borate ruthenium(II) complexes: synthesis, characterization, and reactivity with small molecules. Inorg Chem 2013; 52:4396-410. [PMID: 23530454 DOI: 10.1021/ic302553z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ruthenium(II) hydrotris(pyrazolyl)borate chloro complexes bearing picolyl-functionalized N-heterocyclic carbenes [TpRu(κ(2)-C,N-picolyl-(R)I)Cl] (picolyl-(Me)I = 3-methyl-1-(2-picolyl)imidazol-2-ylidene) (1a), picolyl-(iPr)I = 3-isopropyl-1-(2-picolyl)imidazol-2-ylidene (1b), picolyl-(Me)45DClI = 3-methyl-1-(2-picolyl)-4,5-dichloroimidazol-2-ylidene (1c), picolyl-(Ph)I = 3-phenyl-1-(2-picolyl)imidazol-2-ylidene (1d), picolyl-(Me)BI = 3-methyl-1-(2-picolyl)benzoimidazol-2-ylidene (1e)) have been synthesized and characterized. Furthermore, cationic carbonyl derivatives 2a-e have been prepared, characterized, and used to study the donor properties of the picolylcarbene ligands (picolyl-(R)I) via infrared spectroscopy. Also, the reactivity of the 16-electron species [TpRu(κ(2)-C,N-picolyl-(R)I)](+), in situ generated using NaBAr(F)4 (Ar(F) = 3,5-bis(trifluoromethyl)phenyl) as a halide scavenger, toward N2, CH3CN, H2, CH2CH2, S8, and O2 was studied indicating a strong influence of the NHC wingtip and backbone substituents in the product distribution. The crystal structures of [TpRu(κ(2)-C,N-picolyl-(iPr)I)Cl] (1b), [TpRu(κ(2)-C,N-picolyl-(Me)I)CO][BAr(F)4] (2a), [TpRu(κ(2)-C,N-picolyl-(Ph)I)CO][BAr(F)4] (2d), [{TpRu(κ(2)-C,N-picolyl-(Me)I}2(μ-N2)][BAr(F)4]2 (3'a), [{TpRu(κ(2)-C,N-picolyl-(Ph)I)}2(μ-N2)][BAr(F)4]2 (3'd), [TpRu(κ(2)-C,N-picolyl-(iPr)I)(η(2)-CH2CH2)][BAr(F)4] (5b), and [{TpRu(κ(2)-C,N-picolyl-(Me)I)}2(μ-S2)][BAr(F)4]2 (6) are reported.
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Affiliation(s)
- Francys E Fernández
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, España
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21
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Li P, Herrmann WA, Kühn FE. Unsaturated NHC Complexes Immobilized by the Backbone: Synthesis and Application. ChemCatChem 2013. [DOI: 10.1002/cctc.201200837] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Fernández FE, Puerta MC, Valerga P. Ruthenium(II) Picolyl-NHC Complexes: Synthesis, Characterization, and Catalytic Activity in Amine N-alkylation and Transfer Hydrogenation Reactions. Organometallics 2012. [DOI: 10.1021/om300692a] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Francys E. Fernández
- Departamento de
Ciencia de los Materiales e Ingenierı́a Metalúrgica
y Quı́mica Inorgánica, Facultad de
Ciencias, Universidad de Cádiz,
11510 Puerto Real, Cádiz, Spain
| | - M. Carmen Puerta
- Departamento de
Ciencia de los Materiales e Ingenierı́a Metalúrgica
y Quı́mica Inorgánica, Facultad de
Ciencias, Universidad de Cádiz,
11510 Puerto Real, Cádiz, Spain
| | - Pedro Valerga
- Departamento de
Ciencia de los Materiales e Ingenierı́a Metalúrgica
y Quı́mica Inorgánica, Facultad de
Ciencias, Universidad de Cádiz,
11510 Puerto Real, Cádiz, Spain
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23
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Conde-Guadano S, Danopoulos AA, Pattacini R, Hanton M, Tooze RP. Indenyl Functionalized N-Heterocyclic Carbene Complexes of Chromium: Syntheses, Structures, and Reactivity Studies Relevant to Ethylene Oligomerization and Polymerization. Organometallics 2012. [DOI: 10.1021/om200641u] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Susana Conde-Guadano
- Sasol Technology UK Ltd., Purdie Building, North Haugh, St. Andrews,
Fife, KY16 9ST, U.K
| | - Andreas A. Danopoulos
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Universite de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Roberto Pattacini
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Universite de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Martin Hanton
- Sasol Technology UK Ltd., Purdie Building, North Haugh, St. Andrews,
Fife, KY16 9ST, U.K
| | - Robert P. Tooze
- Sasol Technology UK Ltd., Purdie Building, North Haugh, St. Andrews,
Fife, KY16 9ST, U.K
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24
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Royo B, Peris E. Cyclopentadienyl-, Indenyl- and Fluorenyl-Functionalized N-Heterocyclic Carbene Metal Complexes: Synthesis and Catalytic Applications. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100990] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Dyson G, Zech A, Rawe BW, Haddow MF, Hamilton A, Owen GR. Scorpionate Ligands Based on 2-Mercaptopyridine: A Ligand with a Greater Propensity To Sting? Organometallics 2011. [DOI: 10.1021/om200694r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gavin Dyson
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Alexander Zech
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Benjamin W. Rawe
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Mairi F. Haddow
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | | | - Gareth R. Owen
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
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26
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Fernández FE, Puerta MC, Valerga P. Half-Sandwich Ruthenium(II) Picolyl-NHC Complexes: Synthesis, Characterization, and Catalytic Activity in Transfer Hydrogenation Reactions. Organometallics 2011. [DOI: 10.1021/om200665f] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Francys E. Fernández
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, España
| | - M. Carmen Puerta
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, España
| | - Pedro Valerga
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, España
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27
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da Costa AP, Lopes R, Cardoso JMS, Mata JA, Peris E, Royo B. Enantiomerically Pure Cyclopentadienyl- and Indenyl-Functionalized N-Heterocyclic Carbene Complexes of Iridium and Rhodium. Organometallics 2011. [DOI: 10.1021/om200523h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- André P. da Costa
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - Rita Lopes
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - João M. S. Cardoso
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - Jose A. Mata
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Eduardo Peris
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Beatriz Royo
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
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28
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Takaki D, Okayama T, Shuto H, Matsumoto S, Yamaguchi Y, Matsumoto S. Indenyl-functionalised triethylborane adduct of N-heterocyclic carbene: stepwise coordination of indenyl and NHC ligands toward molybdenum fragment. Dalton Trans 2011; 40:1445-7. [DOI: 10.1039/c0dt01641a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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N-Heterocyclic Carbene Complexes in Reactions Involving Carbon Monoxide. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/978-90-481-2866-2_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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30
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da Costa AP, Mata JA, Royo B, Peris E. Preparation of Cp-Functionalized N-Heterocyclic Carbene Complexes of Ruthenium. Resolution of Chiral Complexes and Catalytic Studies. Organometallics 2010. [DOI: 10.1021/om100090c] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- André Pontes da Costa
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - José A. Mata
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Beatriz Royo
- Instituto de Tecnología Química e Biológica, Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - Eduardo Peris
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
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31
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Díez-González S, Marion N, Nolan SP. N-heterocyclic carbenes in late transition metal catalysis. Chem Rev 2009; 109:3612-76. [PMID: 19588961 DOI: 10.1021/cr900074m] [Citation(s) in RCA: 2574] [Impact Index Per Article: 171.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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32
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Kandepi VVKM, da Costa AP, Peris E, Royo B. Molybdenum(II) Complexes Containing Cyclopentadienyl-Functionalized N-Heterocyclic Carbenes: Synthesis, Structure, and Application in Olefin Epoxidation. Organometallics 2009. [DOI: 10.1021/om9003829] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- V. V. Krishna Mohan Kandepi
- Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - André Pontes da Costa
- Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
| | - Eduardo Peris
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Beatriz Royo
- Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa, Avenida da República, EAN, 2780-157 Oeiras, Portugal
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