1
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Kuster L, Bélanger-Bouliga M, Shaw TE, Jurca T, Nazemi A, Frenette M. Insight into the nature of carbon-metal bonding for N-heterocyclic carbenes in gold/silver complexes and nanoparticles using DFT-correlated Raman spectroscopy: strong evidence for π-backbonding. NANOSCALE 2024; 16:11052-11068. [PMID: 38619424 DOI: 10.1039/d4nr00143e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
N-Heterocyclic carbenes (NHCs) have emerged as promising ligands for stabilizing metallic complexes, nanoclusters, nanoparticles (NPs) and surfaces. The carbon-metal bond between NHCs and metal atoms plays a crucial role in determining the resulting material's stability, reactivity, function, and electronic properties. Using Raman spectroscopy coupled with density functional theory calculations, we investigate the nature of carbon-metal bonding in NHC-silver and NHC-gold complexes as well as their corresponding NPs. While low wavenumbers are inaccessible to standard infrared spectroscopy, Raman detection reveals previously unreported NHC-Au/Ag bond-stretching vibrations between 154-196 cm-1. The computationally efficient r2SCAN-3c method allows an excellent correlation between experimental and predicted Raman spectra which helps calibrate an accurate description of NHC-metal bonding. While π-backbonding should stabilize the NHC-metal bond, conflicting reports for the presence and absence of π-backbonding are seen in the literature. This debate led us to further investigate experimental and theoretical results to ultimately confirm and quantify the presence of π-backbonding in these systems. Experimentally, an observed decrease in the NHC's CN stretching due to the population of the π* orbital is a good indication for the presence of π-backbonding. Using energy decomposition analysis - natural orbitals for chemical valence (EDA-NOCV), our calculations concur and quantify π-backbonding in these NHC-bound complexes and NPs. Surprisingly, we observe that NPs are less stabilized by π-backbonding compared to their respective complexes-a result that partially explains the weaker NHC-NP bond. The protocol described herein will help optimize metal-carbon bonding in NHC-stabilized metal complexes, nanoparticles and surfaces.
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Affiliation(s)
- Lucille Kuster
- Department of Chemistry, NanoQAM and Centre Québécois de Matériaux Fonctionnels (CQMF), Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada.
| | - Marilyne Bélanger-Bouliga
- Department of Chemistry, NanoQAM and Centre Québécois de Matériaux Fonctionnels (CQMF), Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada.
| | - Thomas E Shaw
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, USA
| | - Titel Jurca
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, USA
| | - Ali Nazemi
- Department of Chemistry, NanoQAM and Centre Québécois de Matériaux Fonctionnels (CQMF), Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada.
| | - Mathieu Frenette
- Department of Chemistry, NanoQAM and Centre Québécois de Matériaux Fonctionnels (CQMF), Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada.
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2
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Riethmann M, Föhrenbacher SA, Keiling H, Ignat'ev NV, Finze M, Radius U. Fluoride Abstraction Induced by Tris(pentafluoroethyl)difluorophosphorane: A Convenient Way to Synthesize Cationic N-Heterocyclic Carbene- and Cyclic (Alkyl)(amino)carbene-Ligated Copper Alkyne and Arene Complexes. Inorg Chem 2024; 63:8351-8365. [PMID: 38639397 DOI: 10.1021/acs.inorgchem.4c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
We herein report the convenient synthesis of different N-heterocyclic carbene (NHC)- and cyclic (alkyl)(amino)carbene (cAAC)-ligated copper cations using the weakly coordinating tris(pentafluoroethyl)trifluorophosphate counterion (FAP anion, [(C2F5)3PF3]-). The reaction of the fluorido complexes [(carbene)CuF] (carbene = NHC, cAACMe) 2a-2f and the tris(pentafluoroethyl)difluorophosphorane (C2F5)3PF2 in the presence of alkynes or arenes led to fluoride transfer from Cu to the phosphorane with formation of the cationic transition metal complexes [(carbene)Cu(L)]+ and the weakly coordinating counteranion [(C2F5)3PF3]- (FAP). Using this method, the complexes [(IDipp)Cu(L)]+FAP- (IDipp = 1,3-bis(2,6-di-iso-propylphenyl)-imidazolin-2-ylidene; L = PhC≡CPh, 4d; PhC≡CMe, 5d), [(cAACMe)Cu(L)]+FAP- (cAACMe = 1-(2,6-di-iso-propylphenyl)-3,3,5,5-tetramethyl-pyrrolidin-2-ylidene; L = PhC≡CPh, 4f; PhC≡CMe, 5f), [(SIDipp)Cu(C6Me6)]+FAP- (6e), (SIDipp = 1,3-bis(2,6-di-iso-propylphenyl)-imidazolidine-2-ylidene), and [(cAACMe)Cu(C6Me6)]+FAP- (6f) have been synthesized and characterized. The complexes [(IDipp)Cu(C6Me6)]+FAP- (6d) and [(cAACMe)Cu(C6Me6)]+FAP- (6f) have been used as catalysts for the copper(I)-catalyzed cycloaddition of benzyl azide to terminal alkynes.
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Affiliation(s)
- Melanie Riethmann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Steffen A Föhrenbacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Hannes Keiling
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Nikolai V Ignat'ev
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Consultant, Merck KGaA, Frankfurter Straße 250, Darmstadt 64293, Germany
| | - Maik Finze
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Udo Radius
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
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3
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Goodwin CP, Adams RW, Gaunt AJ, Hanson SK, Janicke MT, Kaltsoyannis N, Liddle ST, May I, Miller JL, Scott BL, Seed JA, Whitehead GFS. N-Heterocyclic Carbene to Actinide d-Based π-bonding Correlates with Observed Metal-Carbene Bond Length Shortening Versus Lanthanide Congeners. J Am Chem Soc 2024; 146:10367-10380. [PMID: 38569081 PMCID: PMC11029940 DOI: 10.1021/jacs.3c12721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 04/05/2024]
Abstract
Comparison of bonding and electronic structural features between trivalent lanthanide (Ln) and actinide (An) complexes across homologous series' of molecules can provide insights into subtle and overt periodic trends. Of keen interest and debate is the extent to which the valence f- and d-orbitals of trivalent Ln/An ions engage in covalent interactions with different ligand donor functionalities and, crucially, how bonding differences change as both the Ln and An series are traversed. Synthesis and characterization (SC-XRD, NMR, UV-vis-NIR, and computational modeling) of the homologous lanthanide and actinide N-heterocyclic carbene (NHC) complexes [M(C5Me5)2(X)(IMe4)] {X = I, M = La, Ce, Pr, Nd, U, Np, Pu; X = Cl, M = Nd; X = I/Cl, M = Nd, Am; and IMe4 = [C(NMeCMe)2]} reveals consistently shorter An-C vs Ln-C distances that do not substantially converge upon reaching Am3+/Nd3+ comparison. Specifically, the difference of 0.064(6) Å observed in the La/U pair is comparable to the 0.062(4) Å difference observed in the Nd/Am pair. Computational analyses suggest that the cause of this unusual observation is rooted in the presence of π-bonding with the valence d-orbital manifold in actinide complexes that is not present in the lanthanide congeners. This is in contrast to other documented cases of shorter An-ligand vs Ln-ligand distances, which are often attributed to increased 5f vs 4f radial diffusivity leading to differences in 4f and 5f orbital bonding involvement. Moreover, in these traditional observations, as the 5f series is traversed, the 5f manifold contracts such that by americium structural studies often find no statistically significant Am3+vs Nd3+ metal-ligand bond length differences.
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Affiliation(s)
- Conrad
A. P. Goodwin
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Centre
for Radiochemistry Research, The University
of Manchester, Oxford
Road, Manchester M13 9PL, U.K.
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Ralph W. Adams
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Andrew J. Gaunt
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Susan K. Hanson
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Michael T. Janicke
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nikolas Kaltsoyannis
- Centre
for Radiochemistry Research, The University
of Manchester, Oxford
Road, Manchester M13 9PL, U.K.
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Stephen T. Liddle
- Centre
for Radiochemistry Research, The University
of Manchester, Oxford
Road, Manchester M13 9PL, U.K.
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Iain May
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Jeffrey L. Miller
- Chemistry
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Materials
Physics & Applications Division, Los
Alamos National Laboratory, Los Alamos, New Mexico, 87545, United States
| | - John A. Seed
- Centre
for Radiochemistry Research, The University
of Manchester, Oxford
Road, Manchester M13 9PL, U.K.
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - George F. S. Whitehead
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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4
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Kumar M, Ansari M, Ansari A. Electronic, geometrical and photophysical facets of five coordinated porphyrin N-heterocyclic carbene transition metals complexes: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121774. [PMID: 36081194 DOI: 10.1016/j.saa.2022.121774] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 07/21/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
In the realm of dye sensitized solar cells (DSSCs), the 3d transition metals as photosensitizers are scarcely studied. In the present work, electronic structures, FMO, MEP surfaces, NBO analysis, energetics and photophysical properties of earth abundant metals (Mn, Fe and Co) based metalloporphyrins coordinated with NHC-carbene have been explored by using DFT and TDDFT calculations. According to formation energies and energy decomposition analysis (EDA), the cobalt based metalloporphyrins species are found to be more stable while in contrast manganese based species are predicted as more reactive among all. Also, from the ligation point of view, the TPP (meso-tetraphenylporphyrin) ligand forms more steady and rigid coordination as compare to the TTP (meso-tetratolylporphyrin) ligand. FMO analysis also support these observations. NBO and SNO results support the electronic configurations as well as unveil the controversial bonding pattern of NHCcarbon and metal atom and found that there is σ-bonding present between the metal and the NHCcarbon by the overlapping of sp-hybridized orbitals of carbenecarbon and sp/d hybrid orbital of the metal atom. TDDFT results show that the highest light harvesting efficiency (LHE) of all the studied species is found under the range of 360 nm - 380 nm (λ) and this may due to the presence of longer π-conjugations. In-depth investigation of this work may help to design new robust energy harvesting systems for high energy conversion efficiency based on earth abundance metals. Our results are in well agreement with the available experimental findings.
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Affiliation(s)
- Manjeet Kumar
- Department of Chemistry, Central University of Haryana, Mahendergarh 123031, India
| | - Mursaleem Ansari
- Department of Chemistry, IIT Bombay, Powai, Mumbai 400076, India
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana, Mahendergarh 123031, India.
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5
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Breitwieser K, Bahmann H, Weiss R, Munz D. Gauging Radical Stabilization with Carbenes. Angew Chem Int Ed Engl 2022; 61:e202206390. [PMID: 35796423 PMCID: PMC9545232 DOI: 10.1002/anie.202206390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Indexed: 11/29/2022]
Abstract
Carbenes, including N‐heterocyclic carbene (NHC) ligands, are used extensively to stabilize open‐shell transition metal complexes and organic radicals. Yet, it remains unknown, which carbene stabilizes a radical well and, thus, how to design radical‐stabilizing C‐donor ligands. With the large variety of C‐donor ligands experimentally investigated and their electronic properties established, we report herein their radical‐stabilizing effect. We show that radical stabilization can be understood by a captodative frontier orbital description involving π‐donation to‐ and π‐donation from the carbenes. This picture sheds a new perspective on NHC chemistry, where π‐donor effects usually are assumed to be negligible. Further, it allows for the intuitive prediction of the thermodynamic stability of covalent radicals of main group‐ and transition metal carbene complexes, and the quantification of redox non‐innocence.
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Affiliation(s)
- Kevin Breitwieser
- Coordination Chemistry Saarland University Campus C4.1 66123 Saarbrücken Germany
| | - Hilke Bahmann
- Physical and Theoretical Chemistry Saarland University Campus B2.2 66123 Saarbrücken Germany
| | - Robert Weiss
- Organische Chemie Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg Henkestr. 42 91054 Erlangen Germany
| | - Dominik Munz
- Coordination Chemistry Saarland University Campus C4.1 66123 Saarbrücken Germany
- Inorganic and General Chemistry Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg Egerlandstr. 1 91058 Erlangen Germany
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6
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Breitwieser K, Bahmann H, Weiss R, Munz D. Gauging Radical Stabilization with Carbenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kevin Breitwieser
- Saarland University: Universitat des Saarlandes Coordination Chemistry GERMANY
| | - Hilke Bahmann
- Saarland University: Universitat des Saarlandes Theoretical Chemistry GERMANY
| | - Robert Weiss
- FAU Erlangen Nuremberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg Organic Chemistry GERMANY
| | - Dominik Munz
- Universitat des Saarlandes Inorganic Chemistry: Coordination Chemistry Campus C 4.1 66123 Saarbrücken GERMANY
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7
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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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8
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Dube S, Matsinha LC, Makhubela BCE, Ambushe AA. Investigating cyanogen rich Manihot esculenta efficacy for Ru phytomining and application in catalytic reactions. RSC Adv 2022; 12:1165-1176. [PMID: 35425133 PMCID: PMC8978976 DOI: 10.1039/d1ra06647a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/18/2021] [Indexed: 11/24/2022] Open
Abstract
Phytomining is a newly developing alternative green technology. This technology has been applied for recovering precious metals from mine tailings that are low-grade ores. In this study, effective catalytic transfer hydrogenation of furfural to furfural alcohol was investigated using a ruthenium (Ru) bio-based catalyst, Ru@CassCat. The catalyst was prepared from Ru rich bio-ore recovered during laboratory scale phytomining as a model of mining tailing using the cassava plant (Manihot esculenta). Pre-rooted cassava cuttings were propagated and watered with Ru rich solutions for ten weeks before harvest. Harvested cassava roots were calcined to produce the bio-ore used as an in situ bio-based catalyst. The properties of the catalyst were characterized by various techniques, which include transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy coupled to energy-dispersive X-ray spectroscopy (SEM-EDS), powder X-ray diffraction (pXRD), ultraviolet-visible (UV-Vis) spectroscopy, thermogravimetric analysis (TGA) and Brunauer–Emmett–Teller (BET) theory. Characterization by FTIR, SEM and TEM revealed that RuCassCat has spherical component particles, loosely arranged around a cellulose/lignin-like matrix of the biocatalyst. It was also found that calcination strengthened the structure and texture of the support carbon matrix to distribute the Ru particles evenly. An ICP-MS analysis showed that up to 295 μg g−1 of Ru was detected in cassava roots. The variation of test conditions, namely, temperature, time, base, catalyst load, and a hydrogen source, was investigated. Optimally, a 0.00295 wt% ruthenium loading on the Ru@CassCat catalyst resulted in 100% furfural conversion with a turnover frequency of 0.0114 million per hour at 160 °C for 24 h using triethylamine as a base and formic acid as a hydrogen source. The catalyst remained active for up to three recycles, consecutively and produced furfural alcohol in high turnover numbers. Effective catalytic transfer hydrogenation of furfural into furfural alcohol was accomplished using a bio-based Ru catalyst, Ru@CassCat. The catalyst was successfully produced from cassava biomass grown in Ru-rich laboratory soils.![]()
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Affiliation(s)
- Sifelani Dube
- Research Center for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - Leah C. Matsinha
- Research Center for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - Banothile C. E. Makhubela
- Research Center for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - Abayneh A. Ambushe
- Research Center for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
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9
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Liu J, Shang J, Wei J, Gao F, Hou L, Zeng F, Li A, Wang W. An α-diiminato germylene family: syntheses, structures, and reactivity towards C-C coupled digermylene and digermylene oxide. Dalton Trans 2022; 51:8671-8679. [DOI: 10.1039/d2dt00981a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and reactivity of a rigid α-diiminate ligand supported chlorogermylene 2 was demonstrated. The reaction of 2 with hydride donor K[BH(sBu)3] yielded a hydride addition product, a five-membered 6π-aromatic...
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10
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Chen Q, Liu Q, Xiao J, Leng X, Deng L. Catalytic Method for the Synthesis of Deuterium-Labeled N-Heterocyclic Carbenes Enabled by a Coordinatively Unsaturated Ruthenium N-Heterocyclic Carbene Catalyst. J Am Chem Soc 2021; 143:19956-19965. [PMID: 34792328 DOI: 10.1021/jacs.1c10071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The wide usage of N-heterocyclic carbenes (NHCs) has raised the quest for their deuterated molecules. Effective synthesis method to obtain them, however, has remained elusive. We present here a catalytic method for the preparation of deuterated NHCs, namely, the catalytic hydrogen-deuterium exchange reaction between NHCs and deuterated benzene using a coordinatively unsaturated Ru NHC catalyst. The catalytic system enables selective deuteration of the C(sp3)-H bonds of the alkyl groups on N-substituents, as well as the sterically nonhindered C(sp2)-H bonds of NHCs as demonstrated by the preparation of 16 deuterium-labeled NHCs that have a deuteration ratio on specified sites higher than 90%. The gram-scale synthesis of deuterated IMes indicated the applicability of this catalytic method. Mechanistic studies revealed that the high regio-selectivity toward those C(sp3)-H bonds on NHCs originates from the regio-selectivity of cyclometalation reactions of coordinatively unsaturated Ru NHC species.
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Affiliation(s)
- Qi Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
| | - Qing Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
| | - Jie Xiao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
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11
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Skarjan L, Villegas‐Escobar N, Correa SA, Daniliuc CG, Matute RA, Rojas RS. Bulky and Electron‐Deficient α‐Iminocarboxamidato‐Nickel(II) Complexes: A Study of the Steric and Electronic Effects on Ethylene Activation. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leon Skarjan
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 Heidelberg Germany
| | - Nery Villegas‐Escobar
- Centro Integrativo de Biología y Química Aplicada (CIBQA) Universidad Bernardo O'Higgins General Gana 1702 Santiago 8370854 Chile
| | - Sebastián A. Correa
- Departamento de Ciencias Químicas y Biológicas Universidad Bernardo O'Higgins General Gana 1702 Santiago Chile
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Ricardo A. Matute
- Centro Integrativo de Biología y Química Aplicada (CIBQA) Universidad Bernardo O'Higgins General Gana 1702 Santiago 8370854 Chile
- Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena California 91125 USA
| | - René S. Rojas
- Laboratorio de Química Inorgánica Facultad de Química y de Farmacia Pontificia Universidad Católica de Chile Av. Vicuña Mackenna 4860 Casilla 306 Chile
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12
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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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13
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Föhrenbacher SA, Zeh V, Krahfuss MJ, Ignat'ev NV, Finze M, Radius U. Tris(pentafluoroethyl)difluorophosphorane and
N
‐Heterocyclic Carbenes: Adduct Formation and Frustrated
Lewis
Pair Reactivity. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Steffen A. Föhrenbacher
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Vivien Zeh
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Mirjam J. Krahfuss
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Nikolai V. Ignat'ev
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Consultant Merck KGaA Frankfurter Straße 250 64293 Darmstadt Germany
| | - Maik Finze
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Udo Radius
- Institute of Inorganic Chemistry Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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14
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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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15
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Nicholls TP, Williams JR, Willans CE. Reactivities of N-heterocyclic carbenes at metal centers. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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16
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17
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Tiefenthaler SM, Streitferdt V, Baumann J, Gaertner S, Gschwind RM, Korber N. On the Reactivity of NHC
t
Bu
AuCl towards Rb
6
Cs
6
Si
17
: The First Gold‐Silicon Cluster [(NHC
t
Bu
Au)
6
(η
2
‐Si
4
)]Cl
2
·7NH
3
and an Imide Capped Gold Triangle (NHC
t
Bu
Au)
3
NHCl. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Verena Streitferdt
- Institute of Organic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Josef Baumann
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Stefanie Gaertner
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Ruth M. Gschwind
- Institute of Organic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Nikolaus Korber
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
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18
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Bhoumik NC, Joy MTR, Ghosh S, Richmond MG, Kabir SE. Thermolysis of [HOs3(CO)8{µ3-Ph2PCH2P(Ph)C6H4}]: New Os2- and Os3- cluster products based on multiple C H bond activation of the bis(diphenylphosphino)methane ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Kuehn L, Eichhorn AF, Schmidt D, Marder TB, Radius U. NHC-stabilized copper(I) aryl complexes and their transmetalation reaction with aryl halides. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121249] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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20
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Mokrane Z, Zouchoune B, Zaiter A. Coordination’s preference and electronic structure of N-heterocyclic carbene–monometallic complexes: DFT evaluation of σ-bonding and π-backbonding interactions. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02628-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Ahmida A, Elmagbari FM, Egold H, Flörke U, Henkel G. NHC-phosphane rhodium complexes and their reaction with oxygen. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Berthel JHJ, Krahfuß MJ, Radius U. Nickel Tetracarbonyl as Starting Material for the Synthesis of NHC‐stabilized Nickel(II) Allyl Complexes. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Johannes H. J. Berthel
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Mirjam J. Krahfuß
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Udo Radius
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
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23
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Abstract
In this contribution, we provide a comprehensive overview of C-H activation methods promoted by NHC-transition metal complexes, covering the literature since 2002 (the year of the first report on metal-NHC-catalyzed C-H activation) through June 2019, focusing on both NHC ligands and C-H activation methods. This review covers C-H activation reactions catalyzed by group 8 to 11 NHC-metal complexes. Through discussing the role of NHC ligands in promoting challenging C-H activation methods, the reader is provided with an overview of this important area and its crucial role in forging carbon-carbon and carbon-heteroatom bonds by directly engaging ubiquitous C-H bonds.
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Affiliation(s)
- 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
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry , Ghent University , Krijgslaan 281 , 9000 Ghent , Belgium
| | - Michal Szostak
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , New Jersey 07102 , United States
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24
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Dhara D, Das S, Kalita P, Maiti A, Pati SK, Scheschkewitz D, Chandrasekhar V, Jana A. Influence of N-heterocyclic carbenes (NHCs) on the hydrolysis of a diphosphene. Dalton Trans 2020; 49:993-997. [PMID: 31913377 DOI: 10.1039/c9dt04690a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the influence of N-heterocyclic carbenes (NHCs) on the hydrolysis of a diphosphene TerP[double bond, length as m-dash]PTer (1; Ter = 2,6-Mes2C6H3; Mes = 2,4,6-Me3C6H2), a phosphorus-analogue of an alkene. The diphosphene 1 itself is completely inert towards water. However, NHCs have been found to activate 1 towards ready hydrolysis. While sterically less-encumbered NHCs react with 1 affording NHC-adducts which are in equilibrium with 1 in solution, sterically encumbered NHCs do not bind to 1 at all. Interestingly, in both of these situations hydrolysis of the P[double bond, length as m-dash]P motif proceeds efficiently. At low temperatures, sterically less-encumbered NHCs are catalytic while the sterically encumbered NHCs play a catalytic role at room temperature. To gain insight on this striking influence of NHCs on the hydrolysis of diphosphene detailed low-temperature 31P-NMR studies along with theoretical calculations have been carried out. In addition, systematic hydrolysis studies of all the NHCs used in this study have also been performed.
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Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India.
| | - Shubhajit Das
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore-560064, India.
| | - Pankaj Kalita
- National Institute of Science Education and Research, Bhimpur-Padanpur, Jatni, Khurda, Bhubaneswar-752050, Odisha, India
| | - Avijit Maiti
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India.
| | - Swapan K Pati
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore-560064, India.
| | - David Scheschkewitz
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123, Saarbrücken, Germany.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India. and Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India.
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25
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Al Furaiji KHM, Molino A, Dutton JL, Wilson DJD. Theoretical Investigation of Main-Group Element Hydride Insertion into Phosphorus-Heterocyclic Carbenes (PHCs). Aust J Chem 2020. [DOI: 10.1071/ch19487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Initial reports of ring expansion reactions (RER) of N-heterocyclic carbenes (NHCs) with main-group element hydrides have led to several synthetic and theoretical investigations, which include reports of insertion by Be, B, Al, Si, and Zn hydrides. The RERs generally lead to insertion of the heteroatom into the endocyclic C–N bond with formation of an expanded heterocyclic ring. Following the recent isolation of a P-heterocyclic carbene (PHC), here we report results from a computational study (RI-SCS-MP2/def2-TZVP//M06–2X/def2-TZVP) of RERs with a series of PHCs for the ring-insertion of silicon (SiH4, SiH2Ph2) and boron (BH3, BH2NMe2) hydrides. In order to explore the roles of both electronic and steric effects on PHCs and their reactivity, a series of P-substituent PHCR (R=H, Me, Ph, and bulky Ar groups) were investigated. Bulky R groups serve to maximise ring planarity and the σ-donating capability of the PHC. For RER, the PHC analogues exhibit facile initial hydride transfer from the main-group hydrides to the carbene carbon, with barriers that are substantially lower than with NHCs. However, the full ring insertion mechanisms for PHCs are, in general, kinetically unfavourable due to a large barrier associated with the ring-expansion step. While bulky P-substituents maximise heterocycle planarity towards that of NHCs, the RER reactivity with bulky PHCs does not reflect that of an NHC.
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26
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Recent advances in the chemistry of group 9—Pincer organometallics. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Liu J, Yu J, Meng Y, Jin L, Sun W, Hou L, Chen S, Zeng F, Li A, Wang W. An Anionic β‐Diketiminato Oxoborane with a B–O Double Bond. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Jiaxiu Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Yinfeng Meng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Lijie Jin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Lei Hou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Fanlong Zeng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Anyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
| | - Wenyuan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University 710127 Xi'an P. R. China
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28
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Kuehn L, Eichhorn AF, Marder TB, Radius U. Copper(I) complexes of N-alkyl-substituted N-Heterocyclic carbenes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Meng G, Kakalis L, Nolan SP, Szostak M. A simple 1H NMR method for determining the σ-donor properties of N-heterocyclic carbenes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.12.059] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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31
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Martínez-Martínez AJ, Tegner BE, McKay AI, Bukvic AJ, Rees NH, Tizzard GJ, Coles SJ, Warren MR, Macgregor SA, Weller AS. Modulation of σ-Alkane Interactions in [Rh(L 2)(alkane)] + Solid-State Molecular Organometallic (SMOM) Systems by Variation of the Chelating Phosphine and Alkane: Access to η 2,η 2-σ-Alkane Rh(I), η 1-σ-Alkane Rh(III) Complexes, and Alkane Encapsulation. J Am Chem Soc 2018; 140:14958-14970. [PMID: 30351014 DOI: 10.1021/jacs.8b09364] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid/gas single-crystal to single-crystal (SC-SC) hydrogenation of appropriate diene precursors forms the corresponding σ-alkane complexes [Rh(Cy2P(CH2) nPCy2)(L)][BArF4] ( n = 3, 4) and [ RhH(Cy2P(CH2)2( CH)(CH2)2PCy2)(L)][BArF4] ( n = 5, L = norbornane, NBA; cyclooctane, COA). Their structures, as determined by single-crystal X-ray diffraction, have cations exhibiting Rh···H-C σ-interactions which are modulated by both the chelating ligand and the identity of the alkane, while all sit in an octahedral anion microenvironment. These range from chelating η2,η2 Rh···H-C (e.g., [Rh(Cy2P(CH2) nPCy2)(η2η2-NBA)][BArF4], n = 3 and 4), through to more weakly bound η1 Rh···H-C in which C-H activation of the chelate backbone has also occurred (e.g., [ RhH(Cy2P(CH2)2( CH)(CH2)2PCy2)(η1-COA)][BArF4]) and ultimately to systems where the alkane is not ligated with the metal center, but sits encapsulated in the supporting anion microenvironment, [Rh(Cy2P(CH2)3PCy2)][COA⊂BArF4], in which the metal center instead forms two intramolecular agostic η1 Rh···H-C interactions with the phosphine cyclohexyl groups. CH2Cl2 adducts formed by displacement of the η1-alkanes in solution ( n = 5; L = NBA, COA), [ RhH(Cy2P(CH2)2( CH)(CH2)2PCy2)(κ1-ClCH2Cl)][BArF4], are characterized crystallographically. Analyses via periodic DFT, QTAIM, NBO, and NCI calculations, alongside variable temperature solid-state NMR spectroscopy, provide snapshots marking the onset of Rh···alkane interactions along a C-H activation trajectory. These are negligible in [Rh(Cy2P(CH2)3PCy2)][COA⊂BArF4]; in [ RhH(Cy2P(CH2)2( CH)(CH2)2PCy2)(η1-COA)][BArF4], σC-H → Rh σ-donation is supported by Rh → σ*C-H "pregostic" donation, and in [Rh(Cy2P(CH2) nPCy2)(η2η2-NBA)][BArF4] ( n = 2-4), σ-donation dominates, supported by classical Rh(dπ) → σ*C-H π-back-donation. Dispersive interactions with the [BArF4]- anions and Cy substituents further stabilize the alkanes within the binding pocket.
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Affiliation(s)
| | - Bengt E Tegner
- Institute of Chemical Sciences , Heriot-Watt University , Edinburgh EH14 4AS , United Kingdom
| | - Alasdair I McKay
- Chemistry Research Laboratories , University of Oxford , Oxford OX1 3TA , United Kingdom
| | - Alexander J Bukvic
- Chemistry Research Laboratories , University of Oxford , Oxford OX1 3TA , United Kingdom
| | - Nicholas H Rees
- Chemistry Research Laboratories , University of Oxford , Oxford OX1 3TA , United Kingdom
| | - Graham J Tizzard
- UK National Crystallography Service, Chemistry, Faculty of Natural and Environmental Sciences , University of Southampton , Southampton SO17 1BJ , United Kingdom
| | - Simon J Coles
- UK National Crystallography Service, Chemistry, Faculty of Natural and Environmental Sciences , University of Southampton , Southampton SO17 1BJ , United Kingdom
| | - Mark R Warren
- Harwell Science and Innovation Campus, Diamond Light Source Ltd. , Didcot OX11 0DE , United Kingdom
| | - Stuart A Macgregor
- Institute of Chemical Sciences , Heriot-Watt University , Edinburgh EH14 4AS , United Kingdom
| | - Andrew S Weller
- Chemistry Research Laboratories , University of Oxford , Oxford OX1 3TA , United Kingdom
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32
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Wang J, Zhai Y, Wang Y, Yu H, Zhao W, Wei Y. Selective aerobic oxidation of halides and amines with an inorganic-ligand supported zinc catalyst. Dalton Trans 2018; 47:13323-13327. [PMID: 30182094 DOI: 10.1039/c8dt03003k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A practical, efficient and environmentally benign catalytic protocol for the oxidative cross-coupling reaction of halides with amines, oxidative self-coupling of amines and oxidation of halides was developed with inorganic-ligand supported ZnPOM (NH4)4[ZnMo6O18(OH)6] using molecular oxygen. This method mainly utilizes an inorganic polymolybdate ligand to support the Zn2+ ion, avoiding the use of complicated organic ligands.
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Affiliation(s)
- Jingjing Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P.R. China.
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33
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Klimenko AS, Prikhod’ko SA, Beskopyl’nyi AM, Tertishnikov IV, Adonin NY. Using Low-Temperature Molten Dialkylimidazole Salts in the Catalytic Reactions of Alkylation and Hydrodechlorination. CATALYSIS IN INDUSTRY 2018. [DOI: 10.1134/s2070050418040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Riddlestone IM, Kraft A, Schaefer J, Krossing I. Die Schöne (WCA) und das (kationische) Biest: Neues aus der Chemie von und mit schwach koordinierenden Anionen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710782] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ian M. Riddlestone
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Deutschland
| | - Anne Kraft
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Deutschland
| | - Julia Schaefer
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Deutschland
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Deutschland
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35
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Riddlestone IM, Kraft A, Schaefer J, Krossing I. Taming the Cationic Beast: Novel Developments in the Synthesis and Application of Weakly Coordinating Anions. Angew Chem Int Ed Engl 2018; 57:13982-14024. [PMID: 29266644 DOI: 10.1002/anie.201710782] [Citation(s) in RCA: 234] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Indexed: 12/11/2022]
Abstract
This Review gives a comprehensive overview of the most topical weakly coordinating anions (WCAs) and contains information on WCA design, stability, and applications. As an update to the 2004 review, developments in common classes of WCA are included. Methods for the incorporation of WCAs into a given system are discussed and advice given on how to best choose a method for the introduction of a particular WCA. A series of starting materials for a large number of WCA precursors and references are tabulated as a useful resource when looking for procedures to prepare WCAs. Furthermore, a collection of scales that allow the performance of a WCA, or its underlying Lewis acid, to be judged is collated with some advice on how to use them. The examples chosen to illustrate WCA developments are taken from a broad selection of topics where WCAs play a role. In addition a section focusing on transition metal and catalysis applications as well as supporting electrolytes is also included.
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Affiliation(s)
- Ian M Riddlestone
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104, Freiburg, Germany
| | - Anne Kraft
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104, Freiburg, Germany
| | - Julia Schaefer
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104, Freiburg, Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104, Freiburg, Germany
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36
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Knighton RC, Emerson‐King J, Rourke JP, Ohlin CA, Chaplin AB. Solution, Solid-State, and Computational Analysis of Agostic Interactions in a Coherent Set of Low-Coordinate Rhodium(III) and Iridium(III) Complexes. Chemistry 2018; 24:4927-4938. [PMID: 29377308 PMCID: PMC5901041 DOI: 10.1002/chem.201705990] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Indexed: 11/16/2022]
Abstract
A homologous family of low-coordinate complexes of the formulation trans-[M(2,2'-biphenyl)(PR3 )2 ][BArF4 ] (M=Rh, Ir; R=Ph, Cy, iPr, iBu) has been prepared and extensively structurally characterised. Enabled through a comprehensive set of solution phase (VT 1 H and 31 P NMR spectroscopy) and solid-state (single crystal X-ray diffraction) data, and analysis in silico (DFT-based NBO and QTAIM analysis), the structural features of the constituent agostic interactions have been systematically interrogated. The combined data substantiates the adoption of stronger agostic interactions for the IrIII compared to RhIII complexes and, with respect to the phosphine ligands, in the order PiBu3 >PCy3 >PiPr3 >PPh3 . In addition to these structure-property relationships, the effect of crystal packing on the agostic interactions was investigated in the tricyclohexylphosphine complexes. Compression of the associated cations, through inclusion of a more bulky solvent molecule (1,2-difluorobenzene vs. CH2 Cl2 ) in the lattice or collection of data at very low temperature (25 vs. 150 K), lead to small but statistically significant shortening of the M-H-C distances.
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Affiliation(s)
- Richard C. Knighton
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - Jack Emerson‐King
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - Jonathan P. Rourke
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - C. André Ohlin
- Department of ChemistryUmeå UniversityLinneausvag 6907 34UmeåSweden
| | - Adrian B. Chaplin
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
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37
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Affiliation(s)
- Dominik Munz
- Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
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38
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39
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Zhang S, Foyle SD, Okrut A, Solovyov A, Katz A, Gates BC, Dixon DA. Role of N-Heterocyclic Carbenes as Ligands in Iridium Carbonyl Clusters. J Phys Chem A 2017; 121:5029-5044. [DOI: 10.1021/acs.jpca.7b04161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengjie Zhang
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Sawyer D. Foyle
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Alexander Okrut
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Andrew Solovyov
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Alexander Katz
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering, University of California at Davis, Davis, California 95616, United States
| | - David A. Dixon
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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40
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Schneider H, Schmidt D, Eichhöfer A, Radius M, Weigend F, Radius U. Synthesis and Reactivity of NHC‐Stabilized Iron(II)–Mesityl Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700143] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Heidi Schneider
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - David Schmidt
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Eichhöfer
- Institut für Nanotechnologie Karlsruher Institut für Technologie (KIT) Campus Nord, Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany
| | - Michael Radius
- Institut für Physikalische Chemie Karlsruher Institut für Technologie (KIT) Campus Süd, Kaiserstraße 12 76131 Karlsruhe Germany
| | - Florian Weigend
- Institut für Nanotechnologie Karlsruher Institut für Technologie (KIT) Campus Nord, Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany
- Institut für Physikalische Chemie Karlsruher Institut für Technologie (KIT) Campus Süd, Kaiserstraße 12 76131 Karlsruhe Germany
| | - Udo Radius
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
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41
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Cui H, Teng P, Zhang E, Lu J, Zhang F, Wu M. Synthesis of a Dichlorosilaimine Coordinated by an N-Heterocyclic Carbene from ArN(SiMe3
)SiHCl2. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Haiyan Cui
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Peng Teng
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Enbin Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Jiahao Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Fan Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Meng Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science; Chinese Academy of Sciences; Nanjing Jiangsu 210008 China
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42
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Sipos G, Gao P, Foster D, Skelton BW, Sobolev AN, Dorta R. In-Depth Study on Chloride Abstractions from (NHC)Ir(COD)Cl Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00864] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gellért Sipos
- School
of Chemistry and Biochemistry, University of Western Australia, M310, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Pengchao Gao
- School
of Chemistry and Biochemistry, University of Western Australia, M310, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Daven Foster
- School
of Chemistry and Biochemistry, University of Western Australia, M310, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Brian W. Skelton
- Centre
for Microscopy, Characterisation and Analysis, University of Western Australia, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Alexandre N. Sobolev
- Centre
for Microscopy, Characterisation and Analysis, University of Western Australia, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Reto Dorta
- School
of Chemistry and Biochemistry, University of Western Australia, M310, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
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43
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Lee E, Bae DY, Yandulov DV. A Highly Substitutable Palladium(II) Complex Stabilized by the Smallest Steric N-Heterocyclic Carbene, IMe ( IMe = 1,3-Dimethylimidazole-2-ylidene). B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eunsung Lee
- Department of Chemistry; Stanford University; Stanford CA 94305-5080 USA
- Center for Self-assembly and Complexity (CSC); Institute for Basic Science (IBS); Pohang 790-784 Republic of Korea
- Department of Chemistry and Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 790-784 Republic of Korea
| | - Dae Young Bae
- Center for Self-assembly and Complexity (CSC); Institute for Basic Science (IBS); Pohang 790-784 Republic of Korea
- Department of Chemistry and Division of Advanced Materials Science; Pohang University of Science and Technology; Pohang 790-784 Republic of Korea
| | - Dmitry V. Yandulov
- Department of Chemistry; Stanford University; Stanford CA 94305-5080 USA
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44
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Hering F, Berthel JHJ, Lubitz K, Paul USD, Schneider H, Härterich M, Radius U. Synthesis and Thermal Properties of Novel NHC-Stabilized Cobalt Carbonyl Nitrosyl Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00374] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florian Hering
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Johannes H. J. Berthel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Katharina Lubitz
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Ursula S. D. Paul
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Heidi Schneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Marcel Härterich
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Udo Radius
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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45
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Cui H, Wu M, Teng P. Reactivity of an NHC-Stabilized Silylene towards Lewis Acids and Lewis Bases. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600779] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haiyan Cui
- Jiangsu Key Laboratory of Pesticide Science; College of Sciences; Nanjing Agricultural University; 210095 Nanjing P. R. China
| | - Meng Wu
- State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science; Chinese Academy of Sciences; 210008 Nanjing P. R. China
| | - Peng Teng
- Jiangsu Key Laboratory of Pesticide Science; College of Sciences; Nanjing Agricultural University; 210095 Nanjing P. R. China
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46
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Shaw P, Kennedy AR, Nelson DJ. Synthesis and characterisation of an N-heterocyclic carbene with spatially-defined steric impact. Dalton Trans 2016; 45:11772-80. [PMID: 27335266 DOI: 10.1039/c6dt02100j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The synthesis and co-ordination chemistry of a new 'bulky yet flexible' N-heterocyclic carbene ("IPaul") is reported. This carbene has spatially-defined steric impact; steric maps show that two quadrants are very bulky while the other two are quite open. The electronic properties of this carbene are very similar to those of other 1,3-diarylimidazol-2-ylidenes. Copper, silver, iridium, and nickel complexes of the new ligand have been prepared. In solution, the ligand adopts two different conformations, while X-ray crystallographic analyses of the transition metal complexes suggest that the syn-conformer is preferred in the solid state due to intermolecular interactions. The copper(i) chloride complex of this new ligand has been shown to be highly-active in the hydrosilylation of carbonyl compounds, when compared to the analogous IPr, IMes, IPr* and IPr*(OMe) complexes.
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Affiliation(s)
- Paul Shaw
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, UK.
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47
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Riddlestone IM, McKay D, Gutmann MJ, Macgregor SA, Mahon MF, Sparkes HA, Whittlesey MK. Isolation of [Ru(IPr)2(CO)H]+ (IPr = 1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and Reactivity toward E–H (E = H, B) Bonds. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00173] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ian M. Riddlestone
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - David McKay
- Institute
of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | | | - Stuart A. Macgregor
- Institute
of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Mary F. Mahon
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - Hazel A. Sparkes
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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48
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Sipos G, Ou A, Skelton BW, Falivene L, Cavallo L, Dorta R. Unusual NHC–Iridium(I) Complexes and Their Use in the Intramolecular Hydroamination of Unactivated Aminoalkenes. Chemistry 2016; 22:6939-46. [DOI: 10.1002/chem.201600378] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Gellért Sipos
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Arnold Ou
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Brian W. Skelton
- Centre for Microscopy, Characterisation and Analysis University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Laura Falivene
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Reto Dorta
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
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49
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Geer AM, López JA, Ciriano MA, Tejel C. Agostic versus Terminal Ethyl Rhodium Complexes: A Combined Experimental and Theoretical Study. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana M. Geer
- Departamento
Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna
12, 50009-Zaragoza, Spain
| | - José A. López
- Departamento
Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna
12, 50009-Zaragoza, Spain
| | - Miguel A. Ciriano
- Departamento
Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna
12, 50009-Zaragoza, Spain
| | - Cristina Tejel
- Departamento
Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna
12, 50009-Zaragoza, Spain
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50
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Aznarez F, Sanz Miguel PJ, Tan TTY, Hahn FE. Preparation of Rhodium(III) Di-NHC Chelate Complexes Featuring Two Different NHC Donors via a Mild NaOAc-Assisted C–H Activation. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00993] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco Aznarez
- Institut
für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
| | - Pablo J. Sanz Miguel
- Departamento
de Quı́mica Inorgánica-ISQCH, Universidad de Zaragoza-CSIC, Plaza San Francisco S/N, 50009 Zaragoza, Spain
| | - Tristan T. Y. Tan
- Institut
für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
| | - F. Ekkehardt Hahn
- Institut
für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
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