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Jiménez MV, Ojeda-Amador AI, Puerta-Oteo R, Martínez-Sal J, Passarelli V, Pérez-Torrente JJ. Selective Oxidation of Glycerol via Acceptorless Dehydrogenation Driven by Ir(I)-NHC Catalysts. Molecules 2022; 27:molecules27227666. [PMID: 36431768 PMCID: PMC9696977 DOI: 10.3390/molecules27227666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/09/2022] Open
Abstract
Iridium(I) compounds featuring bridge-functionalized bis-NHC ligands (NHC = N-heterocyclic carbene), [Ir(cod)(bis-NHC)] and [Ir(CO)2(bis-NHC)], have been prepared from the appropriate carboxylate- or hydroxy-functionalized bis-imidazolium salts. The related complexes [Ir(cod)(NHC)2]+ and [IrCl(cod)(NHC)(cod)] have been synthesized from a 3-hydroxypropyl functionalized imidazolium salt. These complexes have been shown to be robust catalysts in the oxidative dehydrogenation of glycerol to lactate (LA) with dihydrogen release. High activity and selectivity to LA were achieved in an open system under low catalyst loadings using KOH as a base. The hydroxy-functionalized bis-NHC catalysts are much more active than both the carboxylate-functionalized ones and the unbridged bis-NHC iridium(I) catalyst with hydroxyalkyl-functionalized NHC ligands. In general, carbonyl complexes are more active than the related 1,5-cyclooctadiene ones. The catalyst [Ir(CO)2{(MeImCH2)2CHOH}]Br exhibits the highest productivity affording TONs to LA up to 15,000 at very low catalyst loadings.
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Neshat A, Mastrorilli P, Mousavizadeh Mobarakeh A. Recent Advances in Catalysis Involving Bidentate N-Heterocyclic Carbene Ligands. Molecules 2021; 27:95. [PMID: 35011327 PMCID: PMC8746573 DOI: 10.3390/molecules27010095] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/02/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022] Open
Abstract
Since the discovery of persistent carbenes by the isolation of 1,3-di-l-adamantylimidazol-2-ylidene by Arduengo and coworkers, we witnessed a fast growth in the design and applications of this class of ligands and their metal complexes. Modular synthesis and ease of electronic and steric adjustability made this class of sigma donors highly popular among chemists. While the nature of the metal-carbon bond in transition metal complexes bearing N-heterocyclic carbenes (NHCs) is predominantly considered to be neutral sigma or dative bonds, the strength of the bond is highly dependent on the energy match between the highest occupied molecular orbital (HOMO) of the NHC ligand and that of the metal ion. Because of their versatility, the coordination chemistry of NHC ligands with was explored with almost all transition metal ions. Other than the transition metals, NHCs are also capable of establishing a chemical bond with the main group elements. The advances in the catalytic applications of the NHC ligands linked with a second tether are discussed. For clarity, more frequently targeted catalytic reactions are considered first. Carbon-carbon coupling reactions, transfer hydrogenation of alkenes and carbonyl compounds, ketone hydrosilylation, and chiral catalysis are among highly popular reactions. Areas where the efficacy of the NHC based catalytic systems were explored to a lesser extent include CO2 reduction, C-H borylation, alkyl amination, and hydroamination reactions. Furthermore, the synthesis and applications of transition metal complexes are covered.
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Affiliation(s)
- Abdollah Neshat
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran;
| | - Piero Mastrorilli
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica, Politecnico di Bari, Via Orabona, I-70125 Bari, Italy;
| | - Ali Mousavizadeh Mobarakeh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran;
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Mames A, Pietrzak M, Bernatowicz P, Kubas A, Luboradzki R, Ratajczyk T. NMR Crystallography Enhanced by Quantum Chemical Calculations and Liquid State NMR Spectroscopy for the Investigation of Se-NHC Adducts*. Chemistry 2021; 27:16477-16487. [PMID: 34606111 DOI: 10.1002/chem.202102800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Indexed: 11/11/2022]
Abstract
N-heterocyclic carbene ligands (NHC) are widely utilized in catalysis and material science. They are characterized by their steric and electronic properties. Steric properties are usually quantified on the basis of their static structure, which can be determined by X-ray diffraction. The electronic properties are estimated in the liquid state; for example, via the 77 Se liquid state NMR of Se-NHC adducts. We demonstrate that 77 Se NMR crystallography can contribute to the characterization of the structural and electronic properties of NHC in solid and liquid states. Selected Se-NHC adducts are investigated via 77 Se solid state NMR and X-ray crystallography, supported by quantum chemical calculations. This investigation reveals a correlation between the molecular structure of adducts and NMR parameters, including not only isotropic chemical shifts but also the other chemical shift tensor components. Afterwards, the liquid state 77 Se NMR data is presented and interpreted in terms of the quantum chemistry modelling. The discrepancy between the structural and electronic properties, and in particular the π-accepting abilities of adducts in the solid and liquid states is discussed. Finally, the 13 C isotropic chemical shift from the liquid state NMR and the 13 C tensor components are also discussed, and compared with their 77 Se counterparts. 77 Se NMR crystallography can deliver valuable information about NHC ligands, and together with liquid state 77 Se NMR can provide an in-depth outlook on the properties of NHC ligands.
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Affiliation(s)
- Adam Mames
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Mariusz Pietrzak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Piotr Bernatowicz
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Adam Kubas
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Roman Luboradzki
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Tomasz Ratajczyk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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4
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Dominelli B, Jakob CH, Oberkofler J, Fischer PJ, Esslinger EM, Reich RM, Marques F, Pinheiro T, Correia JD, Kühn FE. Mechanisms underlying the cytotoxic activity of syn/anti-isomers of dinuclear Au(I) NHC complexes. Eur J Med Chem 2020; 203:112576. [DOI: 10.1016/j.ejmech.2020.112576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 02/09/2023]
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5
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Jakob CHG, Dominelli B, Rieb J, Jandl C, Pöthig A, Reich RM, Correia JDG, Kühn FE. Dinuclear Gold(I) Complexes Bearing N,N'-Allyl-Bridged Bisimidazolylidene Ligands. Chem Asian J 2020; 15:1848-1851. [PMID: 32348033 PMCID: PMC7687270 DOI: 10.1002/asia.202000453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/28/2020] [Indexed: 11/30/2022]
Abstract
A novel N,N'-allyl-bridged bisimidazolium salt and a novel dinuclear Ag(I) and a Au(I) NHC complex are reported. Both metallacyclic complexes have a twisted structural shape due to the rigid allylic system and form two different isomers relating to the position of the double bonds. The allyl-group shows photoisomerisation, but no reactivity towards bases for the additional coordination of Pd(II).
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Affiliation(s)
- Christian H. G. Jakob
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Bruno Dominelli
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Julia Rieb
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Christian Jandl
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Alexander Pöthig
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Robert M. Reich
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - João D. G. Correia
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências NuclearesInstituto Superior TécnicoUniversidade de LisboaCampus Tecnológico e NuclearEstrada Nacional N° 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - Fritz E. Kühn
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
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7
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Dominelli B, Roberts GM, Jandl C, Fischer PJ, Reich RM, Pöthig A, Correia JDG, Kühn FE. Dinuclear zwitterionic silver(i) and gold(i) complexes bearing 2,2-acetate-bridged bisimidazolylidene ligands. Dalton Trans 2019; 48:14036-14043. [PMID: 31490498 DOI: 10.1039/c9dt03035b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Four novel dinuclear Ag(i) and Au(i) NHC complexes bearing two 2,2-acetate-bridged bisimidazolylidene ligands (R = Me and iPr) of zwitterionic and metallacyclic forms are reported. The functionalized methylene bridge of the ligands leads to water soluble complexes, which have been characterized by NMR and IR spectroscopy, elemental analysis and single crystal X-ray diffraction in the case of La-H2-PF6, Ag2(La)2, Ag2(Lb)2 and Au2(La)2. Dimerization processes caused by hydrogen bonding or Ag(i)-carboxylate interactions in the solid state were observed for La-H2-PF6 and Ag2(La)2. DOSY NMR experiments confirmed that both bisimidazolium salts appear as dimers in aqueous solutions, in contrast to the corresponding monomeric Ag(i) and Au(i) complexes. Both gold(i) complexes form syn- and anti-isomers analogous to the reference coinage metal-based complexes. Protonation studies of the syn-isomer gold(i) complex Au2(La)2 were successful, whereas post-modification esterification or amidation reactions were not feasible. Additionally, decarboxylation reactions (thermally induced Krapcho- or oxidative Hunsdiecker-type) of the bisimidazolium salts were observed. Thus, the proximity of the carboxyl moiety to imidazolium/imidazolylidene rings seems to negatively affect stability and reactivity.
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Affiliation(s)
- Bruno Dominelli
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - Gerri M Roberts
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - Christian Jandl
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - Pauline J Fischer
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - Robert M Reich
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - Alexander Pöthig
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional N° 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - Fritz E Kühn
- Catalysis Research Center, Molecular Catalysis, Technische Universität München, Ernst-Otto-Fischer-Straße 1, D-85748 Garching bei München, Germany.
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8
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Schlagintweit JF, Nguyen L, Dyckhoff F, Kaiser F, Reich RM, Kühn FE. Exploring different coordination modes of the first tetradentate NHC/1,2,3-triazole hybrid ligand for group 10 complexes. Dalton Trans 2019; 48:14820-14828. [DOI: 10.1039/c9dt03430g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and characterisation of the first tetradentate N-heterocyclic carbene (NHC)/1,2,3-triazole hybrid ligand obtained by means of copper(i) catalyzed “click” chemistry and its application for the synthesis of group 10 complexes is reported.
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Affiliation(s)
- Jonas F. Schlagintweit
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Linda Nguyen
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Florian Dyckhoff
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Felix Kaiser
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Robert M. Reich
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Fritz E. Kühn
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
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9
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Schroeter F, Císařová I, Soellner J, Herdtweck E, Strassner T. Electron-poor hemilabile dicationic palladium NHC complexes - synthesis, structure and catalytic activity. Dalton Trans 2018; 47:16638-16650. [PMID: 30421765 DOI: 10.1039/c8dt03373k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We present a new class of dicationic palladium NHC complexes with two carbene ligands bearing different aryl substituents and a hemilabile pyrimidyl group. They can either be synthesized from the imidazolium salts via the silver transmetalation route to a halide-free palladium(ii) precursor or by direct deprotonation by palladium acetate. For four complexes we could determine their solid-state structures by X-ray diffraction experiments. Insight gained by NMR spectroscopy and DFT calculations revealed that in solution the two potentially bidentate ligands interchange between chelating and non-chelating coordination modes. The preference of these coordination modes is governed by the steric influence of the different ligands. The complexes were shown to be active catalysts for the hydroarylation of alkynes, and their performance was rationalized by DFT calculations.
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Affiliation(s)
- Felix Schroeter
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Ivana Císařová
- Charles University Prague, Department of Inorganic Chemistry, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Johannes Soellner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Eberhardt Herdtweck
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, 85747 Garching bei München, Germany
| | - Thomas Strassner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
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10
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Gan MM, Liu JQ, Zhang L, Wang YY, Hahn FE, Han YF. Preparation and Post-Assembly Modification of Metallosupramolecular Assemblies from Poly(N-Heterocyclic Carbene) Ligands. Chem Rev 2018; 118:9587-9641. [DOI: 10.1021/acs.chemrev.8b00119] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ming-Ming Gan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Ji-Quan Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Le Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - F. Ekkehardt Hahn
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
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11
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Wang W, Cui L, Sun P, Shi L, Yue C, Li F. Reusable N-Heterocyclic Carbene Complex Catalysts and Beyond: A Perspective on Recycling Strategies. Chem Rev 2018; 118:9843-9929. [DOI: 10.1021/acs.chemrev.8b00057] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenlong Wang
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Lifeng Cui
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Peng Sun
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Lijun Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Chengtao Yue
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fuwei Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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12
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Puerta-Oteo R, Jiménez MV, Lahoz FJ, Modrego FJ, Passarelli V, Pérez-Torrente JJ. Zwitterionic Rhodium and Iridium Complexes Based on a Carboxylate Bridge-Functionalized Bis-N-heterocyclic Carbene Ligand: Synthesis, Structure, Dynamic Behavior, and Reactivity. Inorg Chem 2018; 57:5526-5543. [PMID: 29624050 DOI: 10.1021/acs.inorgchem.8b00498] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of water-soluble zwitterionic complexes featuring a carboxylate bridge-functionalized bis-N-heterocyclic carbene ligand of formula [Cp*MIIICl{(MeIm)2CHCOO}] and [MI(diene){(MeIm)2CHCOO}] (Cp* = 1,2,3,4,5-pentamethylcyclopentadienyl; M = Rh, Ir; MeIm = 3-methylimidazol-2-yliden-1-yl; diene = 1,5-cyclooctadiene (cod), norbornadiene (nbd)) were prepared from the salt [(MeImH)2CHCOO]Br and suitable metal precursor. The solid-state structure of both types of complexes shows a boat-shaped six-membered metallacycle derived of the κ2C,C' coordination mode of the bis-NHC ligand. The uncoordinated carboxylate fragment is found at the bowsprit position in the Cp*MIII complexes, whereas in the MI(diene) complexes it is at the flagpole position of the metallacycle. The complexes [RhI(diene){(MeIm)2CHCOO}] (diene = cod, nbd) exist as two conformational isomers in dichloromethane, bowsprit and flagpole, that interconvert through the boat-to-boat inversion of the metallacycle. An inversion barrier of ∼17 kcal·mol-1 was determined by two-dimensional exchange spectroscopy NMR measurements for [RhI(cod){(MeIm)2CHCOO}]. Reaction of zwitterionic Cp*MIII complexes with methyl triflate or tetrafluoroboric acid affords the cationic complexes [Cp*MIIICl{(MeIm)2CHCOOMe}]+ or [Cp*MIIICl{(MeIm)2CHCOOH}]+ (M = Rh, Ir) featuring carboxy and methoxycarbonyl functionalized methylene-bridged bis-NHC ligands, respectively. Similarly, complexes [MI(diene){(MeIm)2CHCOOMe}]+ (M = Rh, Ir) were prepared by alkylation of the corresponding zwitterionic MI(diene) complexes with methyl triflate. In contrast, reaction of [IrI(cod){(MeIm)2CHCOO}] with HBF4·Et2O (Et = ethyl), CH3OTf, CH3I, or I2 gives cationic iridium(III) octahedral complexes [IrIIIX(cod){(MeIm)2CHCOO}]+ (X = H, Me, or I) featuring a tripodal coordination mode of the carboxylate bridge-functionalized bis-NHC ligand. The switch from κ2C,C' to κ3C,C',O coordination of the bis-NHC ligand accompanying the oxidative addition prevents the coordination of the anions eventually formed in the process that remain as counterions.
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Affiliation(s)
- Raquel Puerta-Oteo
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain
| | - M Victoria Jiménez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain
| | - Fernando J Lahoz
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain
| | - F Javier Modrego
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain.,Centro Universitario de la Defensa , Ctra. Huesca s/n , ES-50090 Zaragoza , Spain
| | - Jesús J Pérez-Torrente
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea , Universidad de Zaragoza-CSIC, Facultad de Ciencias , C/Pedro Cerbuna, 12 , 50009 Zaragoza , Spain
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13
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Lindhorst AC, Kaspar M, Altmann PJ, Pöthig A, Kühn FE. Synthesis, characterization and derivatization of hydroxyl-functionalized iron(ii) bis(NHC) complexes. Dalton Trans 2018; 47:1857-1867. [PMID: 29337326 DOI: 10.1039/c7dt04774f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses of a novel hydroxyl-functionalized tetradentate NHC/pyridine hybrid ligand and the corresponding Ag(i) and Fe(ii) complexes are presented. Spectroscopic and X-ray diffraction techniques are used for structural investigations and cyclic voltammetry measurements reveal interesting electronic properties. Transmetalation of the trinuclear Ag(i) complex (C1) yields a mononuclear and a dinuclear iron(ii) bis(NHC) complex (C2 and C3), which can be separated by stepwise precipitation. The former is isostructural to iron(ii) bis(NHC) complex A, which is a versatile oxidation catalyst. Furthermore, suitable conditions for esterification reactions of the ligand precursor and iron(ii) bis(NHC) complex (C2) have been established, demonstrating the utility of the hydroxyl functionality for immobilization and derivatization purposes.
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Affiliation(s)
- Anja C Lindhorst
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technical University of Munich, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
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14
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Rieb J, Dominelli B, Mayer D, Jandl C, Drechsel J, Heydenreuter W, Sieber SA, Kühn FE. Influence of wing-tip substituents and reaction conditions on the structure, properties and cytotoxicity of Ag(i)- and Au(i)-bis(NHC) complexes. Dalton Trans 2018; 46:2722-2735. [PMID: 28174778 DOI: 10.1039/c6dt04559f] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The formation of different conformers of dinuclear silver(i) and gold(i) 1,1'-(2-hydroxyethane-1,1-diyl) bridge-functionalized bis(NHC) complexes with various wing-tip substituents (R = methyl, isopropyl and mesityl) has been investigated using multinuclear NMR spectroscopy and SC-XRD as well as DFT calculations. The ratio of anti/syn isomers strongly depends both on wing-tip substituents and the metal. Moreover, the reaction temperature plays a significant role during the transmetallation process for the ratio of gold(i) conformers, which is further affected by purification procedures. All obtained Au(i)-bis(NHC) complexes have been applied in a standard MTT assay performed for screening the antiproliferative activity against human lung and liver cancer cells. Strong evidence for a significant influence of both wing-tip substituents and conformation on the cytotoxic properties of the applied complexes has been found.
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Affiliation(s)
- Julia Rieb
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - Bruno Dominelli
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - David Mayer
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - Christian Jandl
- Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München, Germany
| | - Jonas Drechsel
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Wolfgang Heydenreuter
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Stephan A Sieber
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Fritz E Kühn
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
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15
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Schroeter F, Strassner T. Cationic versus Anionic Palladium Species in the Suzuki–Miyaura Cross‐Coupling. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Felix Schroeter
- Fachrichtung Chemie und Lebensmittelchemie TU Dresden 01062 Dresden Germany
| | - Thomas Strassner
- Fachrichtung Chemie und Lebensmittelchemie TU Dresden 01062 Dresden Germany
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16
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Fareghi-Alamdari R, Saeedi MS, Panahi F. New bis(N-heterocyclic carbene) palladium complex immobilized on magnetic nanoparticles: as a magnetic reusable catalyst in Suzuki-Miyaura cross coupling reaction. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3870] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Reza Fareghi-Alamdari
- Faculty of Chemistry & Chemical Engineering; Malek-Ashtar University of Technology; Tehran Iran
| | | | - Farhad Panahi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
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17
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Zhong R, Lindhorst AC, Groche FJ, Kühn FE. Immobilization of N-Heterocyclic Carbene Compounds: A Synthetic Perspective. Chem Rev 2017; 117:1970-2058. [DOI: 10.1021/acs.chemrev.6b00631] [Citation(s) in RCA: 181] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Rui Zhong
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Anja C. Lindhorst
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Florian J. Groche
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Fritz E. Kühn
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
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18
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Asensio JM, Gómez-Sal P, Andrés R, de Jesús E. Synthesis of water-soluble palladium(ii) complexes with N-heterocyclic carbene chelate ligands and their use in the aerobic oxidation of 1-phenylethanol. Dalton Trans 2017; 46:6785-6797. [DOI: 10.1039/c7dt00643h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Water-soluble palladium(ii) complexes with NHC chelate ligands have been prepared and studied as catalysts in the aerobic oxidation of alcohols in water.
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Affiliation(s)
- Juan M. Asensio
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | - Pilar Gómez-Sal
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | - Román Andrés
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | - Ernesto de Jesús
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
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19
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Kariofillis SK, Cesanek LA, Kassel WS, Piro NA, Swails RJ. Synthesis and Catalytic Activity of a Cationic Pd(II) N-heterocyclic Carbene Complex. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Molina de la Torre JA, Albéniz AC. Vinylic Addition Polynorbornene as Support for N-Heterocyclic Carbene Palladium Complexes: Use as Reservoir of Active Homogeneous Catalytic Species in C−C Cross-Coupling Reactions. ChemCatChem 2016. [DOI: 10.1002/cctc.201600194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Ana C. Albéniz
- IU CINQUIMA/Química Inorgánica; Universidad de Valladolid; 47071 Valladolid Spain
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21
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Santini C, Marinelli M, Pellei M. Boron-Centered Scorpionate-Type NHC-Based Ligands and Their Metal Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600133] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Carlo Santini
- School of Science and Technology; Chemistry Division; University of Camerino; via S. Agostino 1 62032 Camerino Macerata Italy
| | - Marika Marinelli
- School of Science and Technology; Chemistry Division; University of Camerino; via S. Agostino 1 62032 Camerino Macerata Italy
| | - Maura Pellei
- School of Science and Technology; Chemistry Division; University of Camerino; via S. Agostino 1 62032 Camerino Macerata Italy
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22
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Munz D, Allolio C, Meyer D, Micksch M, Roessner L, Strassner T. Oligoether substituted bis-NHC palladium and platinum complexes for aqueous Suzuki–Miyaura coupling and hydrosilylation. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Rajabi F, Schaffner D, Follmann S, Wilhelm C, Ernst S, Thiel WR. Electrostatic Grafting of a Palladium N-Heterocyclic Carbene Catalyst on a Periodic Mesoporous Organosilica and its Application in the Suzuki-Miyaura Reaction. ChemCatChem 2015. [DOI: 10.1002/cctc.201500417] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fatemeh Rajabi
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
- Department of Science; Payame Noor University; 19395-4697 Tehran Iran
| | - Dirk Schaffner
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Sascha Follmann
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Christian Wilhelm
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Stefan Ernst
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Werner R. Thiel
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
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24
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25
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Zhong R, Pöthig A, Mayer DC, Jandl C, Altmann PJ, Herrmann WA, Kühn FE. Spectroscopic and Structural Properties of Bridge-Functionalized Dinuclear Coinage-Metal (Cu, Ag, and Au) NHC Complexes: A Comparative Study. Organometallics 2015. [DOI: 10.1021/om5012402] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rui Zhong
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - Alexander Pöthig
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - David C. Mayer
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - Christian Jandl
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - Philipp J. Altmann
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - Wolfgang A. Herrmann
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular
Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching b. München, Germany
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26
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Ruiz-Varilla AM, Baquero EA, Silbestri GF, Gonzalez-Arellano C, de Jesús E, Flores JC. Synthesis and behavior of novel sulfonated water-soluble N-heterocyclic carbene (η4-diene) platinum(0) complexes. Dalton Trans 2015; 44:18360-9. [DOI: 10.1039/c5dt02622a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel water-soluble (NHC)Pt(0)(1,6-diene) complexes are presented, along with details of their preparation, stability, and use as catalysts for the hydrosilylation of acetylenes in water.
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Affiliation(s)
| | - Edwin A. Baquero
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | - Gustavo F. Silbestri
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | | | - Ernesto de Jesús
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
| | - Juan C. Flores
- Departamento de Química Orgánica y Química Inorgánica
- Universidad de Alcalá
- Madrid
- Spain
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