1
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Southern SA, Perras FA. Comparison of methods for the NMR measurement of motionally averaged dipolar couplings. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2024; 364:107710. [PMID: 38901172 DOI: 10.1016/j.jmr.2024.107710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 05/31/2024] [Accepted: 06/07/2024] [Indexed: 06/22/2024]
Abstract
Motionally averaged dipolar couplings are an important tool for understanding the complex dynamics of catalysts, polymers, and biomolecules. While there is a plethora of solid-state NMR pulse sequences available for their measurement, in can be difficult to gauge the methods' strengths and weaknesses. In particular, there has not been a comprehensive comparison of their performance in natural abundance samples, where 1H homonuclear dipolar couplings are important and the use of large MAS rotors may be required for sensitivity reasons. In this work, we directly compared some of the more common methods for measuring C-H dipolar couplings in natural abundance samples using L-alanine (L-Ala) and the N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLF) tripeptide as model systems. We evaluated their performance in terms of accuracy, resolution, sensitivity, and ease of implementation. We found that, despite the presence of 1H homonuclear dipolar interactions, all methods, with the exception of REDOR, were able to yield the reasonable dipolar coupling strengths for both mobile and static moieties. Of these methods, PDLF provides the most convenient workflow and precision at the expense of low sensitivity. In low-sensitivity cases, MAS-PISEMA and DIPSHIFT appear to be the better options.
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Affiliation(s)
- Scott A Southern
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, IA 50011, USA
| | - Frédéric A Perras
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, IA 50011, USA; Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
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2
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Hansen PE. The Synergy between Nuclear Magnetic Resonance and Density Functional Theory Calculations. Molecules 2024; 29:336. [PMID: 38257249 PMCID: PMC10821511 DOI: 10.3390/molecules29020336] [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: 12/23/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
This paper deals with the synergy between Nuclear Magnetic Resonance (NMR) spectroscopic investigations and DFT calculations, mainly of NMR parameters. Both the liquid and the solid states are discussed here. This text is a mix of published results supplemented with new findings. This paper deals with examples in which useful results could not have been obtained without combining NMR measurements and DFT calculations. Examples of such cases are tautomeric systems in which NMR data are calculated for the tautomers; hydrogen-bonded systems in which better XH bond lengths can be determined; cage compounds for which assignment cannot be made based on NMR data alone; revison of already published structures; ionic compounds for which reference data are not available; assignment of solid-state spectra and crystal forms; and the creation of libraries for biological molecules. In addition to these literature cases, a revision of a cage structure and substituent effects on pyrroles is also discussed.
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Affiliation(s)
- Poul Erik Hansen
- Department of Science and Environment, Roskilde University, DK-4000 Roskilde, Denmark
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3
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Southern SA, Liu DJ, Chatterjee P, Li Y, Perras FA. 1H chemical shift anisotropy: a high sensitivity solid-state NMR dynamics probe for surface studies? Phys Chem Chem Phys 2023; 25:5348-5360. [PMID: 36399032 DOI: 10.1039/d2cp04406d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Dynamics play significant roles in chemistry and biochemistry-molecular motions impact both large- and small-scale chemical reactions in addition to biochemical processes. In many systems, including heterogeneous catalysts, the characterization of dynamics remains a challenge. The most common approaches involve the solid-state NMR measurement of anisotropic interactions, in particular 2H quadrupolar coupling and 1H-X dipolar coupling, which generally require isotope enrichment. Due to the high sensitivity of 1H NMR, 1H chemical shift anisotropy (CSA) is a particularly enticing, and underexplored, dynamics probe. We carried out 1H CSA and 1H-13C dipolar coupling measurements in a series of model supported complexes to understand how 1H CSA can be leveraged to gain dynamic information for heterogeneous catalysts. Mathematical descriptions are given for the dynamic averaging of the CSA tensor, and its dependence on orientation and asymmetry. The variability of the orientation of the tensor in the molecular frame, in addition to its magnitude and asymmetry, negatively impacts attempts to extract quantitative dynamic information. Nevertheless, 1H CSA measurements can reveal useful qualitative insights into the motions of a particularly dilute site, such as from a surface species.
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Affiliation(s)
- Scott A Southern
- Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50014, USA.
| | - Da-Jiang Liu
- Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50014, USA.
| | - Puranjan Chatterjee
- Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50014, USA. .,Department of Chemistry, Iowa State University, Ames, IA 50014, USA
| | - Yuting Li
- Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50014, USA.
| | - Frédéric A Perras
- Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50014, USA.
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4
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Lin X, Tian W, Wu W, Mo Y. Evidence for π CHR→d M bonding in transition metal carbene compounds (L nMCHR) and its decisive role in the α-agostic effect. Phys Chem Chem Phys 2022; 24:23420-23426. [PMID: 36128880 DOI: 10.1039/d2cp03870f] [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
It has been generally recognized that the α-agostic interaction (M⋯H-C) in transition metal carbene compounds LnMCHR (R = H, Me etc.) can be interpreted with a double metal-carbon bonding model. This bonding model involves the reorganization of the σ component, which can be illustrated in terms of three-center two-electron (3c-2e) M-H-C covalent bond as in transition metal alkyl compounds. Herein, we propose an alternative partial triple metal-carbon bonding model to elucidate the agostic interaction in LnMCHR. Apart from the well-defined σ and π bonds, there exists a seemingly weak but decisive third force, namely the πCHR→dM bonding between an occupied π-like symmetric CHR orbital and a vacant metal d orbital, which is the true origin of the α-agostic effect. This partial triple bonding model is authenticated on both Fischer- and Schrock-type carbenes by an ab initio valence bond (VB) method or the block-localized wavefunction (BLW) method, which has the capability to quantify this notable π bonding and further demonstrate its geometric, energetic and spectral impacts on agostic transition metal carbene compounds. We also show that ancillary ligands can modulate the πCHR→dM bonding through electronic and steric effects.
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Affiliation(s)
- Xuhui Lin
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
| | - Weiqin Tian
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
| | - Wei Wu
- The State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
| | - Yirong Mo
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC 27401, USA.
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5
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Berkson ZJ, Lätsch L, Hillenbrand J, Fürstner A, Copéret C. Classifying and Understanding the Reactivities of Mo-Based Alkyne Metathesis Catalysts from 95Mo NMR Chemical Shift Descriptors. J Am Chem Soc 2022; 144:15020-15025. [PMID: 35969854 DOI: 10.1021/jacs.2c06252] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The most active alkyne metathesis catalysts rely on well-defined Mo alkylidynes, X3Mo≡CR (X = OR), in particular the recently developed canopy catalyst family bearing silanolate ligand sets. Recent efforts to understand catalyst reactivity patterns have shown that NMR chemical shifts are powerful descriptors, though previous studies have mostly focused on ligand-based NMR descriptors. Here, we show in the context of alkyne metathesis that 95Mo chemical shift tensors encode detailed information on the electronic structure of these catalysts. Analysis by first-principles calculations of 95Mo chemical shift tensors extracted from solid-state 95Mo NMR spectra shows a direct link of chemical shift values with the energies of the HOMO and LUMO, two molecular orbitals involved in the key [2 + 2]-cycloaddition step, thus linking 95Mo chemical shifts to reactivity. In particular, the 95Mo chemical shifts are driven by ligand electronegativity (σ-donation) and electron delocalization through Mo-O π interactions, thus explaining the reactivity patterns of the silanolate canopy catalysts. These results further motivate exploration of transition metal NMR signatures and their relationships to electronic structure and reactivity.
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Affiliation(s)
- Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Lukas Lätsch
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 2, CH-8093 Zürich, Switzerland
| | | | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 2, CH-8093 Zürich, Switzerland
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6
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Núñez-Zarur F, Díaz López E, Restrepo A. Alkane C-H activation and ligand exchange on silica supported d 0 metal alkylidenes: relevance to alkane metathesis. Dalton Trans 2022; 51:6416-6426. [PMID: 35388847 DOI: 10.1039/d2dt00434h] [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
In this work, we study the ligand exchange process between an alkane and a series of silica supported metal alkylidenes, which may occur by different pathways: C-H addition, σ-bond metathesis, and α-H abstraction. The results indicate that the α-H abstraction pathway is the preferred one, regardless of the catalyst and ligands. This is in contrast to the expected preference for the C-H addition route. When looking for the origin of this preference, our calculations revealed that the α-H abstraction pathway is driven by entropy, which favors the initial dissociation of the alkyl ligand from the catalyst.
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Affiliation(s)
- Francisco Núñez-Zarur
- Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 N° 30-65, 050026 Medellín, Colombia.
| | - Estefanía Díaz López
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Albeiro Restrepo
- Instituto de Química, Universidad de Antioquia, Calle 70 N° 52-21, 050010 Medellín, Colombia
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7
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Atterberry BA, Carnahan SL, Chen Y, Venkatesh A, Rossini AJ. Double echo symmetry-based REDOR and RESPDOR pulse sequences for proton detected measurements of heteronuclear dipolar coupling constants. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2022; 336:107147. [PMID: 35149335 DOI: 10.1016/j.jmr.2022.107147] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
1H{X} symmetry-based rotational echo double resonance pulse sequences (S-REDOR) and symmetry-based rotational echo saturation pulse double resonance (S-RESPDOR) solid-state NMR experiments have found widespread application for 1H detected measurements of difference NMR spectra, dipolar coupling constants, and internuclear distances under conditions of fast magic angle spinning (MAS). In these experiments the supercycled R412 (SR412) symmetry-based recoupling pulse sequence is typically applied to the 1H spins to reintroduce heteronuclear dipolar couplings. However, the timing of SR412 and other symmetry-based pulse sequences must be precisely synchronized with the rotation of the sample, otherwise, the evolution of 1H CSA and other interactions will not be properly refocused. For this reason, significant distortions are often observed in experimental dipolar dephasing difference curves obtained with S-REDOR or S-RESPDOR pulse sequences. Here we introduce a family of double echo (DE) S-REDOR/S-RESPDOR pulse sequences that function in an analogous manner to the recently introduced t1-noise eliminated (TONE) family of dipolar heteronuclear multiple quantum coherence (D-HMQC) pulse sequences. Through numerical simulations and experiments the DE S-REDOR/S-RESPDOR sequences are shown to provide dephasing difference curves similar to those obtained with S-REDOR/S-RESPDOR. However, the DE sequences are more robust to the deviations of the MAS frequency from the ideal value that occurs during typical solid-state NMR experiments. The DE sequences are shown to provide more reliable 1H detected dipolar dephasing difference curves for nuclei such as 15N (with isotopic labelling), 183W and 35Cl. The double echo sequences are therefore recommended to be used in place of conventional S-REDOR/S-RESPDOR sequences for measurement of weak dipolar coupling constants and long-range distances.
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Affiliation(s)
- Benjamin A Atterberry
- US DOE Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Department of Chemistry, Ames, IA 50011, USA
| | - Scott L Carnahan
- US DOE Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Department of Chemistry, Ames, IA 50011, USA
| | - Yunhua Chen
- US DOE Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Department of Chemistry, Ames, IA 50011, USA
| | - Amrit Venkatesh
- US DOE Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Department of Chemistry, Ames, IA 50011, USA
| | - Aaron J Rossini
- US DOE Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Department of Chemistry, Ames, IA 50011, USA.
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8
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Musso JV, Schowner R, Falivene L, Frey W, Cavallo L, Buchmeiser MR. Predicting Catalytic Activity from
13
C
CH
Alkylidene Chemical Shift in Cationic Tungsten Oxo Alkylidene N‐Heterocyclic Carbene Complexes. ChemCatChem 2021. [DOI: 10.1002/cctc.202101510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Janis V. Musso
- Institut für Polymerchemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Roman Schowner
- Institut für Polymerchemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Laura Falivene
- Dipartimento di Chimica e Biologia University of Salerno Via Papa Paolo Giovanni II I-84084 Fisciano Italy
| | - Wolfgang Frey
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Luigi Cavallo
- KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology 23955-6900 Thuwal Saudi Arabia
| | - Michael R. Buchmeiser
- Institut für Polymerchemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
- German Institutes of Textile and Fiber Research (DITF) Denkendorf Körschtalstr. 26 73770 Denkendorf Germany
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9
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Zhizhko PA, Bushkov NS, Pichugov AV, Zarubin DN. Oxo/imido heterometathesis: From molecular stoichiometric studies to well-defined heterogeneous catalysts. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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10
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Buntkowsky G, Döller S, Haro-Mares N, Gutmann T, Hoffmann M. Solid-state NMR studies of non-ionic surfactants confined in mesoporous silica. Z PHYS CHEM 2021. [DOI: 10.1515/zpch-2021-3132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Abstract
This review gives an overview of current trends in the investigation of confined molecules such as higher alcohols, ethylene glycol and polyethylene glycol as guest molecules in neat and functionalized mesoporous silica materials. All these molecules have both hydrophobic and hydrophilic parts. They are characteristic role-models for the investigation of confined surfactants. Their properties are studied by a combination of solid-state NMR and relaxometry with other physicochemical techniques and molecular dynamics techniques. It is shown that this combination delivers unique insights into the structure, arrangement, dynamical properties and the guest-host interactions inside the confinement.
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Affiliation(s)
- Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Sonja Döller
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Nadia Haro-Mares
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Torsten Gutmann
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Markus Hoffmann
- Department of Chemistry and Biochemistry , State University of New York College at Brockport , Brockport , NY , 14420 , USA
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11
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Handzlik J, Kurleto K, Gierada M. Computational Insights into Active Site Formation during Alkene Metathesis over a MoO x/SiO 2 Catalyst: The Role of Surface Silanols. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03912] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jarosław Handzlik
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
| | - Kamil Kurleto
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
| | - Maciej Gierada
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
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12
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Perras FA, Paterson AL, Kobayashi T. Phase-sensitive γ-encoded recoupling of heteronuclear dipolar interactions and 1H chemical shift anisotropy. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2021; 111:101712. [PMID: 33450713 DOI: 10.1016/j.ssnmr.2020.101712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
γ-encoded recoupling sequences are known to produce strong amplitude modulations that lead to sharp doublets when Fourier transformed. These doublets depend very little on the recoupled tensor asymmetry and thus enable for the straightforward determination of dynamic order parameters. It can, however, be difficult to measure small anisotropies, or small order parameters, using such sequences; the resonances from the doublet may overlap with each other, or with the zero-frequency glitch. This limitation has prevented the widespread use of 1H chemical shift anisotropy (CSA) for the measurement of dynamics, particularly for CH protons which typically have CSAs of only a few ppm when immobile. Here, we introduce a simple modification to the traditional 1H CSA and proton-detected local field pulse sequences that enables the acquisition of a hypercomplex dataset and the removal of the uncorrelated magnetization that results in the zero-frequency glitch. These new sequences then yield a frequency shift in the indirect dimension, rather than a splitting, which is easily identifiable even in cases of weak interactions.
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13
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Kane AQ, Esper AM, Searles K, Ehm C, Veige AS. Probing β-alkyl elimination and selectivity in polyolefin hydrogenolysis through DFT. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01088c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A long chain substrate with [(SiO)3ZrH] has been investigated to elucidate selectivity rules in β-alkyl elimination. DFT studies indicate that polypropylene preferentially undergoes β-Me elimination.
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Affiliation(s)
- Alexander Q. Kane
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA
| | - Alec M. Esper
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA
| | - Keith Searles
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Adam S. Veige
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA
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14
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Paterson AL, Liu DJ, Kanbur U, Sadow AD, Perras FA. Observing the three-dimensional dynamics of supported metal complexes. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01241f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dynamics of heterogeneous catalysts are linked to their activity and selectivity but are poorly understood. NMR enables for the determination of high-resolution dynamic structures for such sites and the mapping of accessible conformations.
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15
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Buntkowsky G, Vogel M. Small Molecules, Non-Covalent Interactions, and Confinement. Molecules 2020; 25:E3311. [PMID: 32708283 PMCID: PMC7397022 DOI: 10.3390/molecules25143311] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 11/27/2022] Open
Abstract
This review gives an overview of current trends in the investigation of small guest molecules, confined in neat and functionalized mesoporous silica materials by a combination of solid-state NMR and relaxometry with other physico-chemical techniques. The reported guest molecules are water, small alcohols, and carbonic acids, small aromatic and heteroaromatic molecules, ionic liquids, and surfactants. They are taken as characteristic role-models, which are representatives for the typical classes of organic molecules. It is shown that this combination delivers unique insights into the structure, arrangement, dynamics, guest-host interactions, and the binding sites in these confined systems, and is probably the most powerful analytical technique to probe these systems.
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Affiliation(s)
- Gerd Buntkowsky
- Institut für Physikalische Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Michael Vogel
- Institut für Festkörperphysik, Technische Universität Darmstadt, 64295 Darmstadt, Germany
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16
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De Jesus Silva J, Ferreira MAB, Fedorov A, Sigman MS, Copéret C. Molecular-level insight in supported olefin metathesis catalysts by combining surface organometallic chemistry, high throughput experimentation, and data analysis. Chem Sci 2020; 11:6717-6723. [PMID: 33133485 PMCID: PMC7553044 DOI: 10.1039/d0sc02594a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/09/2020] [Indexed: 12/18/2022] Open
Abstract
A combination of high-throughput experimentation (HTE), surface organometallic chemistry (SOMC) and statistical data analysis provided the platform to analyze in situ silica-grafted Mo imido alkylidene catalysts based on a library of 35 phenols. Overall, these tools allowed for the identification of σ-donor electronic effects and dispersive interactions and as key drivers in a prototypical metathesis reaction, homodimerization of 1-nonene. Univariate and multivariate correlation analysis confirmed the categorization of the catalytic data into two groups, depending on the presence of aryl groups in ortho position of the phenol ligand. The initial activity (TOFin) was predominantly correlated to the σ-donor ability of the aryloxy ligands, while the overall catalytic performance (TON1 h) was mainly dependent on attractive dispersive interactions with the used phenol ligands featuring aryl ortho substituents and, in sharp contrast, repulsive dispersive interactions with phenol free of aryl ortho substituents. This work outlines a fast and efficient workflow of gaining molecular-level insight into supported metathesis catalysts and highlights σ-donor ability and noncovalent interactions as crucial properties for designing active d0 supported metathesis catalysts.
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Affiliation(s)
- Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1 5 , CH 8093 Zürich , Switzerland . ;
| | - Marco A B Ferreira
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA .
- Centre for Excellence for Research in Sustainable Chemistry (CERSusChem) , Department of Chemistry , Federal University of São Carlos - UFSCar , Rodovia Washington Luís, Km 235, SP-310 , São Carlos , São Paulo 13565-905 , Brazil
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1 5 , CH 8093 Zürich , Switzerland . ;
- Department of Mechanical and Process Engineering , ETH Zürich , Leonhardstrasse 21 , CH 8092 Zürich , Switzerland
| | - Matthew S Sigman
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA .
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1 5 , CH 8093 Zürich , Switzerland . ;
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17
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Yaacoub LF, Aljuhani MA, Jedidi A, Al-Harbi MS, Al Maksoud W, Wackerow W, Abou-Hamad E, Pelletier JDA, El Eter M, Cavallo L, Basset JM. Evidence for Silica Surface Three- and Five-Membered Metallacycle Intermediates in the Catalytic Cycle of Hydroaminoalkylation of Olefins Using Single-Ti-Metal Catalysts. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Layal F. Yaacoub
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
- Lebanese University, Faculty of sciences section III, Tripoli, Lebanon
| | - Maha A. Aljuhani
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Abdesslem Jedidi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Manal S. Al-Harbi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
| | - Walid Al Maksoud
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Wiebke Wackerow
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Edy Abou-Hamad
- King Abdullah University of Science and Technology (KAUST), Core Laboratories, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jérémie D. A. Pelletier
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mohamad El Eter
- Lebanese University, Faculty of sciences section III, Tripoli, Lebanon
| | - Luigi Cavallo
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jean-Marie Basset
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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18
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Hillenbrand J, Leutzsch M, Yiannakas E, Gordon CP, Wille C, Nöthling N, Copéret C, Fürstner A. "Canopy Catalysts" for Alkyne Metathesis: Molybdenum Alkylidyne Complexes with a Tripodal Ligand Framework. J Am Chem Soc 2020; 142:11279-11294. [PMID: 32463684 PMCID: PMC7322728 DOI: 10.1021/jacs.0c04742] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
![]()
A new family of structurally well-defined
molybdenum alkylidyne
catalysts for alkyne metathesis, which is distinguished by a tripodal
trisilanolate ligand architecture, is presented. Complexes of type 1 combine the virtues of previous generations of silanolate-based
catalysts with a significantly improved functional group tolerance.
They are easy to prepare on scale; the modularity of the ligand synthesis
allows the steric and electronic properties to be fine-tuned and hence
the application profile of the catalysts to be optimized. This opportunity
is manifested in the development of catalyst 1f, which
is as reactive as the best ancestors but exhibits an unrivaled scope.
The new catalysts work well in the presence of unprotected alcohols
and various other protic groups. The chelate effect entails even a
certain stability toward water, which marks a big leap forward in
metal alkylidyne chemistry in general. At the same time, they tolerate
many donor sites, including basic nitrogen and numerous heterocycles.
This aspect is substantiated by applications to polyfunctional (natural)
products. A combined spectroscopic, crystallographic, and computational
study provides insights into structure and electronic character of
complexes of type 1. Particularly informative are a density
functional theory (DFT)-based chemical shift tensor analysis of the
alkylidyne carbon atom and 95Mo NMR spectroscopy; this
analytical tool had been rarely used in organometallic chemistry before
but turns out to be a sensitive probe that deserves more attention.
The data show that the podand ligands render a Mo-alkylidyne a priori
more electrophilic than analogous monodentate triarylsilanols; proper
ligand tuning, however, allows the Lewis acidity as well as the steric
demand about the central atom to be adjusted to the point that excellent
performance of the catalyst is ensured.
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Affiliation(s)
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Ektoras Yiannakas
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Christopher P Gordon
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Christian Wille
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Nils Nöthling
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
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19
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Wang Z, Patnaik S, Eedugurala N, Manzano JS, Slowing II, Kobayashi T, Sadow AD, Pruski M. Silica-Supported Organolanthanum Catalysts for C–O Bond Cleavage in Epoxides. J Am Chem Soc 2020; 142:2935-2947. [DOI: 10.1021/jacs.9b11606] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhuoran Wang
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Smita Patnaik
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Naresh Eedugurala
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - J. Sebastián Manzano
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Igor I. Slowing
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Takeshi Kobayashi
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Marek Pruski
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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20
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Biberger T, Gordon CP, Leutzsch M, Peil S, Guthertz A, Copéret C, Fürstner A. Alkyne
gem
‐Hydrogenation: Formation of Pianostool Ruthenium Carbene Complexes and Analysis of Their Chemical Character. Angew Chem Int Ed Engl 2019; 58:8845-8850. [DOI: 10.1002/anie.201904255] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Christopher P. Gordon
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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21
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Biberger T, Gordon CP, Leutzsch M, Peil S, Guthertz A, Copéret C, Fürstner A. Alkyne
gem
‐Hydrogenation: Formation of Pianostool Ruthenium Carbene Complexes and Analysis of Their Chemical Character. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904255] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Christopher P. Gordon
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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22
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Yang B, Sharkas K, Gagliardi L, Truhlar DG. The effects of active site and support on hydrogen elimination over transition-metal-functionalized yttria-decorated metal–organic frameworks. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01069f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Transition-metal catalysts supported on a metal–organic framework have been screened computationally to reveal the best catalytic candidates for hydrogen elimination reactions, which are critical in many catalytic cycles.
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Affiliation(s)
- Bo Yang
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Kamal Sharkas
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Laura Gagliardi
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
| | - Donald G. Truhlar
- Department of Chemistry
- Inorganometallic Catalyst Design Center
- Chemical Theory Center
- and Minnesota Supercomputing Institute
- University of Minnesota
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23
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Díaz E, Restrepo A, Núñez-Zarur F. Reactivity of a Silica-Supported Mo Alkylidene Catalyst toward Alkanes: A DFT Study on the Metathesis of Propane. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Estefanía Díaz
- Instituto de Química, Universidad de Antioquia, Calle 70 No. 52-21, 050010 Medellín, Colombia
| | - Albeiro Restrepo
- Instituto de Química, Universidad de Antioquia, Calle 70 No. 52-21, 050010 Medellín, Colombia
| | - Francisco Núñez-Zarur
- Facultad de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, 050026 Medellín, Colombia
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24
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Halbert S, Ispas S, Raynaud C, Eisenstein O. Modelling the surface of amorphous dehydroxylated silica: the influence of the potential on the nature and density of defects. NEW J CHEM 2018. [DOI: 10.1039/c7nj03922k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature and density of defects on the amorphous dehydroxylated silica surface are studied by molecular dynamics for information on the silanol groups of pretreated silica.
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Affiliation(s)
| | - Simona Ispas
- Laboratoire Charles Coulomb (L2C)
- UMR 5221
- Univ. Montpellier
- CNRS
- Montpellier
| | | | - Odile Eisenstein
- Institut Charles Gerhardt (ICGM)
- UMR 5253
- Univ. Montpellier
- CNRS
- ENSCM
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25
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Samantaray MK, Pump E, Bendjeriou-Sedjerari A, D’Elia V, Pelletier JDA, Guidotti M, Psaro R, Basset JM. Surface organometallic chemistry in heterogeneous catalysis. Chem Soc Rev 2018; 47:8403-8437. [DOI: 10.1039/c8cs00356d] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface organometallic chemistry has been reviewed with a special focus on environmentally relevant transformations (C–H activation, CO2conversion, oxidation).
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Affiliation(s)
- Manoja K. Samantaray
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Eva Pump
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | | | - Valerio D’Elia
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology
- WangChan
- Thailand
| | - Jérémie D. A. Pelletier
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Matteo Guidotti
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Rinaldo Psaro
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Jean-Marie Basset
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
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26
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Estes DP, Gordon CP, Fedorov A, Liao WC, Ehrhorn H, Bittner C, Zier ML, Bockfeld D, Chan KW, Eisenstein O, Raynaud C, Tamm M, Copéret C. Molecular and Silica-Supported Molybdenum Alkyne Metathesis Catalysts: Influence of Electronics and Dynamics on Activity Revealed by Kinetics, Solid-State NMR, and Chemical Shift Analysis. J Am Chem Soc 2017; 139:17597-17607. [DOI: 10.1021/jacs.7b09934] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deven P. Estes
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Christopher P. Gordon
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Wei-Chih Liao
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Henrike Ehrhorn
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Celine Bittner
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Manuel Luca Zier
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Ka Wing Chan
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
- Hylleraas
Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Christophe Raynaud
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
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27
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28
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Copéret C, Liao WC, Gordon CP, Ong TC. Active Sites in Supported Single-Site Catalysts: An NMR Perspective. J Am Chem Soc 2017; 139:10588-10596. [DOI: 10.1021/jacs.6b12981] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Wei-Chih Liao
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Ta-Chung Ong
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
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29
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Palermo A, Solovyov A, Ertler D, Okrut A, Gates BC, Katz A. Dialing in single-site reactivity of a supported calixarene-protected tetrairidium cluster catalyst. Chem Sci 2017; 8:4951-4960. [PMID: 28959418 PMCID: PMC5607854 DOI: 10.1039/c7sc00686a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/30/2017] [Indexed: 11/21/2022] Open
Abstract
A closed Ir4 carbonyl cluster, 1, comprising a tetrahedral metal frame and three sterically bulky tert-butyl-calix[4]arene(OPr)3(OCH2PPh2) (Ph = phenyl; Pr = propyl) ligands at the basal plane, was characterized with variable-temperature 13C NMR spectroscopy, which show the absence of scrambling of the CO ligands at temperatures up to 313 K. This demonstration of distinct sites for the CO ligands was found to extend to the reactivity and catalytic properties, as shown by selective decarbonylation in a reaction with trimethylamine N-oxide (TMAO) as an oxidant, which, reacting in the presence of ethylene, leads to the selective bonding of an ethyl ligand at the apical Ir site. These clusters were supported intact on porous silica and found to catalyze ethylene hydrogenation, and a comparison of the kinetics of the single-hydrogenation reaction and steady-state hydrogenation catalysis demonstrates a unique single-site catalyst-with each site having the same catalytic activity. Reaction orders in the catalytic ethylene hydrogenation reaction of approximately 1/2 and 0 for H2 and C2H4, respectively, nearly match those for conventional noble-metal catalysts. In contrast to oxidative decarbonylation, thermal desorption of CO from silica-supported cluster 1 occurred exclusively at the basal plane, giving rise to sites that do not react with ethylene and are catalytically inactive for ethylene hydrogenation. The evidence of distinctive sites on the cluster catalyst leads to a model that links to hydrogen-transfer catalysis on metals-involving some surface sites that bond to both hydrocarbon and hydrogen and are catalytically engaged (so-called "*" sites) and others, at the basal plane, which bond hydrogen and CO but not hydrocarbon and are reservoir sites (so-called "S" sites).
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Affiliation(s)
- Andrew Palermo
- Department of Chemical Engineering , University of California at Davis , One Shields Avenue , Davis , California 95616 , USA .
| | - Andrew Solovyov
- Department of Chemical and Biomolecular Engineering , University of California at Berkeley , Berkeley , California 94720-1462 , USA . ;
| | - Daniel Ertler
- Department of Chemical and Biomolecular Engineering , University of California at Berkeley , Berkeley , California 94720-1462 , USA . ;
| | - Alexander Okrut
- Department of Chemical and Biomolecular Engineering , University of California at Berkeley , Berkeley , California 94720-1462 , USA . ;
| | - Bruce C Gates
- Department of Chemical Engineering , University of California at Davis , One Shields Avenue , Davis , California 95616 , USA .
| | - Alexander Katz
- Department of Chemical and Biomolecular Engineering , University of California at Berkeley , Berkeley , California 94720-1462 , USA . ;
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30
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Yamamoto K, Gordon CP, Liao WC, Copéret C, Raynaud C, Eisenstein O. Orbital Analysis of Carbon-13 Chemical Shift Tensors Reveals Patterns to Distinguish Fischer and Schrock Carbenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701537] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Keishi Yamamoto
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Wei-Chih Liao
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Raynaud
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
- Centre for Theoretical and Computational Chemistry (CTCC); Department of Chemistry; University of Oslo; P.O. Box 1033, Blindern 0315 Oslo Norway
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31
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Yamamoto K, Gordon CP, Liao WC, Copéret C, Raynaud C, Eisenstein O. Orbital Analysis of Carbon-13 Chemical Shift Tensors Reveals Patterns to Distinguish Fischer and Schrock Carbenes. Angew Chem Int Ed Engl 2017; 56:10127-10131. [DOI: 10.1002/anie.201701537] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Keishi Yamamoto
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Wei-Chih Liao
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Raynaud
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
- Centre for Theoretical and Computational Chemistry (CTCC); Department of Chemistry; University of Oslo; P.O. Box 1033, Blindern 0315 Oslo Norway
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32
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Liao WC, Ong TC, Gajan D, Bernada F, Sauvée C, Yulikov M, Pucino M, Schowner R, Schwarzwälder M, Buchmeiser MR, Jeschke G, Tordo P, Ouari O, Lesage A, Emsley L, Copéret C. Dendritic polarizing agents for DNP SENS. Chem Sci 2017; 8:416-422. [PMID: 28451187 PMCID: PMC5365053 DOI: 10.1039/c6sc03139k] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 08/19/2016] [Indexed: 01/22/2023] Open
Abstract
Dendrimer-shielded polarizing agents for the application of DNP SENS to reactive surfaces.
Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) is an effective method to significantly improve solid-state NMR investigation of solid surfaces. The presence of unpaired electrons (polarizing agents) is crucial for DNP, but it has drawbacks such as leading to faster nuclear spin relaxation, or even reaction with the substrate under investigation. The latter can be a particular problem for heterogeneous catalysts. Here, we present a series of carbosilane-based dendritic polarizing agents, in which the bulky dendrimer can reduce the interaction between the solid surface and the free radical. We thereby preserve long nuclear T′2 of the surface species, and even successfully enhance a reactive heterogeneous metathesis catalyst.
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Affiliation(s)
- Wei-Chih Liao
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Ta-Chung Ong
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - David Gajan
- Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France
| | - Florian Bernada
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Claire Sauvée
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Maxim Yulikov
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Margherita Pucino
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Roman Schowner
- Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Martin Schwarzwälder
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Michael R Buchmeiser
- Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Paul Tordo
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Olivier Ouari
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
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33
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Estes DP, Bittner C, Àrias Ò, Casey M, Fedorov A, Tamm M, Copéret C. Alkyne Metathesis with Silica-Supported and Molecular Catalysts at Parts-per-Million Loadings. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605129] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Deven P. Estes
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zürich Switzerland
| | - Celine Bittner
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Òscar Àrias
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Martin Casey
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zürich Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zürich Switzerland
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zürich Switzerland
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34
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Estes DP, Bittner C, Àrias Ò, Casey M, Fedorov A, Tamm M, Copéret C. Alkyne Metathesis with Silica-Supported and Molecular Catalysts at Parts-per-Million Loadings. Angew Chem Int Ed Engl 2016; 55:13960-13964. [PMID: 27486006 DOI: 10.1002/anie.201605129] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 12/29/2022]
Abstract
Improvement of the activity, stability, and chemoselectivity of alkyne-metathesis catalysts is necessary before this promising methodology can become a routine method to construct C≡C triple bonds. Herein, we show that grafting of the known molecular catalyst [MesC≡Mo(OtBuF6 )3 ] (1, Mes=2,4,6-trimethylphenyl, OtBuF6 =hexafluoro-tert-butoxy) onto partially dehydroxylated silica gave a well-defined silica-supported active alkyne-metathesis catalyst [(≡SiO)Mo(≡CMes)(OtBuF6 )2 ] (1/SiO2-700 ). Both 1 and 1/SiO2-700 showed very high activity, selectivity, and stability in the self-metathesis of a variety of carefully purified alkynes, even at parts-per-million catalyst loadings. Remarkably, the lower turnover frequencies observed for 1/SiO2-700 by comparison to 1 do not prevent the achievement of high turnover numbers. We attribute the lower reactivity of 1/SiO2-700 to the rigidity of the surface Mo species owing to the strong interaction of the metal site with the silica surface.
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Affiliation(s)
- Deven P Estes
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Celine Bittner
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Òscar Àrias
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Martin Casey
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland.
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35
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Brauckmann JO, Zolfaghari P, Verhoef R, Klop EA, de Wijs GA, Kentgens APM. Structural Studies of Polyaramid Fibers: Solid-State NMR and First-Principles Modeling. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Ole Brauckmann
- TI-COAST, Science Park 904, 1098 XH Amsterdam, The Netherlands
- Institute
for Molecules and Materials, Radboud University, 6500 GL Nijmegen, The Netherlands
| | - Pegah Zolfaghari
- Institute
for Molecules and Materials, Radboud University, 6500 GL Nijmegen, The Netherlands
| | - René Verhoef
- Teijin Aramid Research Institute, P.O. Box 5153, Arnhem, The Netherlands
| | - Enno A. Klop
- Teijin Aramid Research Institute, P.O. Box 5153, Arnhem, The Netherlands
| | - Gilles A. de Wijs
- Institute
for Molecules and Materials, Radboud University, 6500 GL Nijmegen, The Netherlands
| | - Arno P. M. Kentgens
- Institute
for Molecules and Materials, Radboud University, 6500 GL Nijmegen, The Netherlands
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36
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Valla M, Wischert R, Comas-Vives A, Conley MP, Verel R, Copéret C, Sautet P. Role of Tricoordinate Al Sites in CH3ReO3/Al2O3 Olefin Metathesis Catalysts. J Am Chem Soc 2016; 138:6774-85. [DOI: 10.1021/jacs.6b00447] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maxence Valla
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Raphael Wischert
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Aleix Comas-Vives
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Matthew P. Conley
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - René Verel
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, 8093 Zurich, Switzerland
| | - Philippe Sautet
- Univ Lyon, Ens de Lyon, CNRS, Université Lyon 1, Laboratoire de Chimie UMR 5182, F 69342 Lyon, France
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37
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Conley MP, Lapadula G, Sanders K, Gajan D, Lesage A, del Rosal I, Maron L, Lukens WW, Copéret C, Andersen RA. The Nature of Secondary Interactions at Electrophilic Metal Sites of Molecular and Silica-Supported Organolutetium Complexes from Solid-State NMR Spectroscopy. J Am Chem Soc 2016; 138:3831-43. [PMID: 26887899 DOI: 10.1021/jacs.6b00071] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lu[CH(SiMe3)2]3 reacts with [SiO2-700] to give [(≡SiO)Lu[CH(SiMe3)2]2] and CH2(SiMe3)2. [(≡SiO)Lu[CH(SiMe3)2]2] is characterized by solid-state NMR and EXAFS spectroscopy, which show that secondary Lu···C and Lu···O interactions, involving a γ-CH3 and a siloxane bridge, are present. From X-ray crystallographic analysis, the molecular analogues Lu[CH(SiMe3)2]3-x[O-2,6-tBu-C6H3]x (x = 0-2) also have secondary Lu···C interactions. The (1)H NMR spectrum of Lu[CH(SiMe3)2]3 shows that the -SiMe3 groups are equivalent to -125 °C and inequivalent below that temperature, ΔG(⧧)(Tc = 148 K) = 7.1 kcal mol(-1). Both -SiMe3 groups in Lu[CH(SiMe3)2]3 have (1)JCH = 117 ± 1 Hz at -140 °C. The solid-state (13)C CPMAS NMR spectrum at 20 °C shows three chemically inequivalent resonances in the area ratio of 4:1:1 (12:3:3); the J-resolved spectra for each resonance give (1)JCH = 117 ± 2 Hz. The (29)Si CPMAS NMR spectrum shows two chemically inequivalent resonances with different values of chemical shift anisotropy. Similar observations are obtained for Lu[CH(SiMe3)2]3-x[O-2,6-tBu-C6H3]x (x = 1 and 2). The spectroscopic data point to short Lu···Cγ contacts corresponding to 3c-2e Lu···Cγ-Siβ interactions, which are supported by DFT calculations. Calculated natural bond orbital (NBO) charges show that Cγ carries a negative charge, while Lu, Hγ, and Siβ carry positive charges; as the number of O-based ligands increases so does the positive charge at Lu, which in turns shortens the Lu···Cγ distance. The change in NBO charges and the resulting changes in the spectroscopic and crystallographic properties show how ligands and surface-support sites rearrange to accommodate these changes, consistent with Pauling's electroneutrality concept.
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Affiliation(s)
- Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Giuseppe Lapadula
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Kevin Sanders
- Centre de RMN à Très Hauts Champs, CRNS/ENS-Lyon/UCB Lyon 1, Université de Lyon , 5 rue de la Doua, 69100 Villeurbanne, France
| | - David Gajan
- Centre de RMN à Très Hauts Champs, CRNS/ENS-Lyon/UCB Lyon 1, Université de Lyon , 5 rue de la Doua, 69100 Villeurbanne, France
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs, CRNS/ENS-Lyon/UCB Lyon 1, Université de Lyon , 5 rue de la Doua, 69100 Villeurbanne, France
| | - Iker del Rosal
- Université de Toulouse and CNRS, LPCNO INSA/UPS/CNRS , 135 avenue de Rangueil, 31077 Toulouse Cedex 4, France
| | - Laurent Maron
- Université de Toulouse and CNRS, LPCNO INSA/UPS/CNRS , 135 avenue de Rangueil, 31077 Toulouse Cedex 4, France
| | - Wayne W Lukens
- Chemical Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Richard A Andersen
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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38
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Pucino M, Mougel V, Schowner R, Fedorov A, Buchmeiser MR, Copéret C. Cationic Silica-Supported N-Heterocyclic Carbene Tungsten Oxo Alkylidene Sites: Highly Active and Stable Catalysts for Olefin Metathesis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510678] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Margherita Pucino
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Roman Schowner
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
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39
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Pucino M, Mougel V, Schowner R, Fedorov A, Buchmeiser MR, Copéret C. Cationic Silica-Supported N-Heterocyclic Carbene Tungsten Oxo Alkylidene Sites: Highly Active and Stable Catalysts for Olefin Metathesis. Angew Chem Int Ed Engl 2016; 55:4300-2. [DOI: 10.1002/anie.201510678] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Margherita Pucino
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Roman Schowner
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
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40
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Lummiss JAM, Perras FA, McDonald R, Bryce DL, Fogg DE. Sterically Driven Olefin Metathesis: The Impact of Alkylidene Substitution on Catalyst Activity. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00984] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justin A. M. Lummiss
- Centre for Catalysis Research & Innovation and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
| | - Frédéric A. Perras
- Centre for Catalysis Research & Innovation and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
| | - Robert McDonald
- X-ray
Crystallographic Laboratory, Department of Chemistry, University of Alberta, Edmonton, AB, Canada, T6G 2G2
| | - David L. Bryce
- Centre for Catalysis Research & Innovation and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
| | - Deryn E. Fogg
- Centre for Catalysis Research & Innovation and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
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41
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Halbert S, Copéret C, Raynaud C, Eisenstein O. Elucidating the Link between NMR Chemical Shifts and Electronic Structure in d0 Olefin Metathesis Catalysts. J Am Chem Soc 2016; 138:2261-72. [DOI: 10.1021/jacs.5b12597] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stéphanie Halbert
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
| | - Christophe Copéret
- ETH Zürich, Department of Chemistry and
Applied Sciences, Vladimir
Prelog Weg 1-5, 10, CH-8093 Zürich, Switzerland
| | - Christophe Raynaud
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
| | - Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
- Centre
for Theoretical and Computational Chemistry (CTCC), Department of
Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
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42
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Copéret C, Comas-Vives A, Conley MP, Estes DP, Fedorov A, Mougel V, Nagae H, Núñez-Zarur F, Zhizhko PA. Surface Organometallic and Coordination Chemistry toward Single-Site Heterogeneous Catalysts: Strategies, Methods, Structures, and Activities. Chem Rev 2016; 116:323-421. [PMID: 26741024 DOI: 10.1021/acs.chemrev.5b00373] [Citation(s) in RCA: 497] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P Estes
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Haruki Nagae
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,Department of Chemistry, Graduate School of Engineering Science, Osaka University, CREST , Toyonaka, Osaka 560-8531, Japan
| | - Francisco Núñez-Zarur
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Pavel A Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov str. 28, 119991 Moscow, Russia
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43
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Jia HP, Gouré E, Solans-Monfort X, Llop Castelbou J, Chow C, Taoufik M, Eisenstein O, Quadrelli EA. Hydrazine N–N Bond Cleavage over Silica-Supported Tantalum-Hydrides. Inorg Chem 2015; 54:11648-59. [DOI: 10.1021/acs.inorgchem.5b01541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong-Peng Jia
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
| | - Eric Gouré
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
| | | | - Jessica Llop Castelbou
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
| | - Catherine Chow
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
| | - Mostafa Taoufik
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253 CNRS Université de Montpellier, cc 1501, Place E. Bataillon, 34095 Montpellier, France
| | - Elsje Alessandra Quadrelli
- Laboratoire C2P2
(équipe COMS), UMR 5265 CNRS−Université de Lyon 1−CPE Lyon, 43, Bvd du 11 Novembre 1918, 69616 Villeurbanne, France
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44
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D’Elia V, Dong H, Rossini AJ, Widdifield CM, Vummaleti SVC, Minenkov Y, Poater A, Abou-Hamad E, Pelletier JDA, Cavallo L, Emsley L, Basset JM. Cooperative Effect of Monopodal Silica-Supported Niobium Complex Pairs Enhancing Catalytic Cyclic Carbonate Production. J Am Chem Soc 2015; 137:7728-39. [DOI: 10.1021/jacs.5b02872] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Valerio D’Elia
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Hailin Dong
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Aaron J. Rossini
- Centre
de RMN à Très Hauts Champs (CNRS/ENS-Lyon/UCB Lyon 1), Université de Lyon, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Cory M. Widdifield
- Centre
de RMN à Très Hauts Champs (CNRS/ENS-Lyon/UCB Lyon 1), Université de Lyon, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Sai V. C. Vummaleti
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yury Minenkov
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Albert Poater
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Institut
de Química Computacional, Department de Química, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
| | - Edy Abou-Hamad
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jérémie D. A. Pelletier
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lyndon Emsley
- Centre
de RMN à Très Hauts Champs (CNRS/ENS-Lyon/UCB Lyon 1), Université de Lyon, 5 rue de la Doua, 69100 Villeurbanne, France
- Institut
des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Jean-Marie Basset
- KAUST
Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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45
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Mougel V, Santiago CB, Zhizhko PA, Bess EN, Varga J, Frater G, Sigman MS, Copéret C. Quantitatively analyzing metathesis catalyst activity and structural features in silica-supported tungsten imido-alkylidene complexes. J Am Chem Soc 2015; 137:6699-704. [PMID: 25938259 DOI: 10.1021/jacs.5b03344] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A broad series of fully characterized, well-defined silica-supported W metathesis catalysts with the general formula [(≡SiO)W(═NAr)(═CHCMe2R)(X)] (Ar = 2,6-iPr2C6H3 (AriPr), 2,6-Cl2C6H3 (ArCl), 2-CF3C6H4 (ArCF3), and C6F5 (ArF5); X = OC(CF3)3 (OtBuF9), OCMe(CF3)2 (OtBuF6), OtBu, OSi(OtBu)3, 2,5-dimethylpyrrolyl (Me2Pyr) and R = Me or Ph) was prepared by grafting bis-X substituted complexes [W(NAr)(═CHCMe2R)(X)2] on silica partially dehydroxylated at 700 °C (SiO2-(700)), and their activity was evaluated with the goal to obtain detailed structure-activity relationships. Quantitative influence of the ligand set on the activity (turnover frequency, TOF) in self-metathesis of cis-4-nonene was investigated using multivariate linear regression analysis tools. The TOF of these catalysts (activity) can be well predicted from simple steric and electronic parameters of the parent protonated ligands; it is described by the mutual contribution of the NBO charge of the nitrogen or the IR intensity of the symmetric N-H stretch of the ArNH2, corresponding to the imido ligand, together with the Sterimol B5 and pKa of HX, representing the X ligand. This quantitative and predictive structure-activity relationship analysis of well-defined heterogeneous catalysts shows that high activity is associated with the combination of X and NAr ligands of opposite electronic character and paves the way toward rational development of metathesis catalysts.
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Affiliation(s)
- Victor Mougel
- †Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 2, 8093 Zürich, Switzerland
| | - Celine B Santiago
- ‡Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Pavel A Zhizhko
- †Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 2, 8093 Zürich, Switzerland
| | - Elizabeth N Bess
- ‡Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Jeno Varga
- §XiMo Hungary, Zahony u. 7 H-1031 Budapest, Hungary
| | - Georg Frater
- §XiMo Hungary, Zahony u. 7 H-1031 Budapest, Hungary
| | - Matthew S Sigman
- ‡Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Christophe Copéret
- †Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 2, 8093 Zürich, Switzerland
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46
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Solans-Monfort X, Copéret C, Eisenstein O. Metallacyclobutanes from Schrock-Type d0 Metal Alkylidene Catalysts: Structural Preferences and Consequences in Alkene Metathesis. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00147] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Odile Eisenstein
- Institut Charles
Gerhardt, CNRS 5253 Université de Montpellier, cc 1501, Place E. Bataillon, F-34095 Montpellier, France
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47
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Allouche F, Mougel V, Copéret C. Activating Thiolate-Based Imidoalkylidene Tungsten(VI) Metathesis Catalysts by Grafting onto Silica. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Florian Allouche
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland)
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland)
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland)
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48
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Hamieh A, Chen Y, Abdel-Azeim S, Abou-hamad E, Goh S, Samantaray M, Dey R, Cavallo L, Basset JM. Well-Defined Surface Species [(≡Si—O—)W(═O)Me3] Prepared by Direct Methylation of [(≡Si—O—)W(═O)Cl3], a Catalyst for Cycloalkane Metathesis and Transformation of Ethylene to Propylene. ACS Catal 2015. [DOI: 10.1021/cs5020749] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ali Hamieh
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Yin Chen
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Safwat Abdel-Azeim
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Edy Abou-hamad
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Serena Goh
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Manoja Samantaray
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Raju Dey
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Jean Marie Basset
- Physical Sciences and Engineering,
KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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49
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Credendino R, Vignola E, Poater A, Callens E, Basset JM, Cavallo L. Fluxional Behavior of Molecular WMe6 and of Silica Grafted WMe6. Organometallics 2015. [DOI: 10.1021/om5013192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Raffaele Credendino
- KAUST
Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Emanuele Vignola
- Dipartimento
di Chimica e Biologia, Università di Salerno, Via Ponte
don Melillo, I-84084 Fisciano, Salerno, Italy
| | - Albert Poater
- KAUST
Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Institut
de Química Computacional i Catàlisi (IQCC), Departament
de Química, University of Girona, Campus de Montilivisn, 17071 Girona, Catalonia, Spain
| | - Emmanuel Callens
- KAUST
Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jean-Marie Basset
- 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
- Dipartimento
di Chimica e Biologia, Università di Salerno, Via Ponte
don Melillo, I-84084 Fisciano, Salerno, Italy
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50
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Del Rosal I, Gerber IC, Poteau R, Maron L. Grafting of lanthanide complexes on silica surfaces dehydroxylated at 200 °C: a theoretical investigation. NEW J CHEM 2015. [DOI: 10.1039/c5nj01645b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The grafting reaction of lanthanide silylamide complexes has been studied, in the framework of the DFT, highlighting the different grafting modes on a silica surface dehydroxylated at 200 °C.
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Affiliation(s)
- Iker Del Rosal
- Université de Toulouse
- INSA
- UPS
- LPCNO (IRSAMC)
- F-31077 Toulouse
| | - Iann C. Gerber
- Université de Toulouse
- INSA
- UPS
- LPCNO (IRSAMC)
- F-31077 Toulouse
| | - Romuald Poteau
- Université de Toulouse
- INSA
- UPS
- LPCNO (IRSAMC)
- F-31077 Toulouse
| | - Laurent Maron
- Université de Toulouse
- INSA
- UPS
- LPCNO (IRSAMC)
- F-31077 Toulouse
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