151
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Fabricating polyoxometalates-stabilized single-atom site catalysts in confined space with enhanced activity for alkynes diboration. Nat Commun 2021; 12:4205. [PMID: 34244508 PMCID: PMC8271022 DOI: 10.1038/s41467-021-24513-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 06/14/2021] [Indexed: 12/04/2022] Open
Abstract
Effecting the synergistic function of single metal atom sites and their supports is of great importance to achieve high-performance catalysts. Herein, we successfully fabricate polyoxometalates (POMs)-stabilized atomically dispersed platinum sites by employing three-dimensional metal-organic frameworks (MOFs) as the finite spatial skeleton to govern the accessible quantity, spatial dispersion, and mobility of metal precursors around each POM unit. The isolated single platinum atoms (Pt1) are steadily anchored in the square-planar sites on the surface of monodispersed Keggin-type phosphomolybdic acid (PMo) in the cavities of various MOFs, including MIL-101, HKUST-1, and ZIF-67. In contrast, either the absence of POMs or MOFs yielded only platinum nanoparticles. Pt1-PMo@MIL-101 are seven times more active than the corresponding nanoparticles in the diboration of phenylacetylene, which can be attributed to the synergistic effect of the preconcentration of organic reaction substrates by porous MOFs skeleton and the decreased desorption energy of products on isolated Pt atom sites. It is of great significance to exert the synergistic effect between single atom and support. Here, the authors prepare polyoxometalates-stabilized single-atom site catalysts in confined space with enhanced activity for alkynes diboration.
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152
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Rupprechter G. Operando Surface Spectroscopy and Microscopy during Catalytic Reactions: From Clusters via Nanoparticles to Meso-Scale Aggregates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2004289. [PMID: 33694320 DOI: 10.1002/smll.202004289] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 02/16/2021] [Indexed: 05/16/2023]
Abstract
Operando characterization of working catalysts, requiring per definitionem the simultaneous measurement of catalytic performance, is crucial to identify the relevant catalyst structure, composition and adsorbed species. Frequently applied operando techniques are discussed, including X-ray absorption spectroscopy, near ambient pressure X-ray photoelectron spectroscopy and infrared spectroscopy. In contrast to these area-averaging spectroscopies, operando surface microscopy by photoemission electron microscopy delivers spatially-resolved data, directly visualizing catalyst heterogeneity. For thorough interpretation, the experimental results should be complemented by density functional theory. The operando approach enables to identify changes of cluster/nanoparticle structure and composition during ongoing catalytic reactions and reveal how molecules interact with surfaces and interfaces. The case studies cover the length-scales from clusters via nanoparticles to meso-scale aggregates, and demonstrate the benefits of specific operando methods. Restructuring, ligand/atom mobility, and surface composition alterations during the reaction may have pronounced effects on activity and selectivity. The nanoscale metal/oxide interface steers catalytic performance via a long ranging effect. Combining operando spectroscopy with switching gas feeds or concentration-modulation provides further mechanistic insights. The obtained fundamental understanding is a prerequisite for improving catalytic performance and for rational design.
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Affiliation(s)
- Günther Rupprechter
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC/01, Vienna, 1060, Austria
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153
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen-Bonding-Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021; 60:17446-17451. [PMID: 34036725 DOI: 10.1002/anie.202106682] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/23/2021] [Indexed: 02/04/2023]
Abstract
The practical synthesis of polar-functionalized polyolefins using transition-metal-catalyzed copolymerization of olefins with polar monomers is a challenge; the use of heterogeneous catalysts is little explored. Herein, we report the synthesis of heterogeneous naphthoquinone-based nickel (Ni/SiO2 ) and palladium (Pd/SiO2 ) catalysts through hydrogen bonding interactions of the ligands with the silica surface. Ni/SiO2 exhibits high activities (up to 2.65×106 g mol-1 h-1 ) during the copolymerization of ethylene with 5-hexene-1-yl-acetate, affording high-molecular-weight (Mn up to 630 000) polar-functionalized semicrystalline polyethylene (comonomer incorporation up to 2.8 mol %), along with great morphology control. The resulting copolymers possess improved surface properties and great mechanical properties. Pd/SiO2 can mediate ethylene copolymerization with polar monomers with moderate activity to produce high-molecular-weight copolymers with tunable comonomer incorporation.
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Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
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154
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen‐Bonding‐Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
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155
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Mörsdorf JM, Wadepohl H, Ballmann J. Reductive Hydrogenation under Single-Site Control: Generation and Reactivity of a Transient NHC-Stabilized Tantalum(III) Alkoxide. Inorg Chem 2021; 60:9785-9795. [PMID: 34111351 DOI: 10.1021/acs.inorgchem.1c01075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
One of the most attractive routes for the preparation of reactive tantalum(III) species relies on the efficient salt-free hydrogenolysis of tantalum(V) alkyls or tantalum(V) alkylidenes, a process known as reductive hydrogenation. For silica-crafted tantalum alkyls and alkylidenes, this process necessarily proceeds at well-separated tantalum centers, while related reductive hydrogenations in homogeneous solution commonly involve dimeric complexes. Herein, an NHC scaffold was coordinated to a novel tri(alkoxido)tantalum(V) alkylidene to circumvent the formation of dimers during reductive hydrogenation. Employing this new model system, a key intermediate of the process, namely a hydrido-tantalum alkyl, was isolated for the first time and shown to exhibit a bidirectional reactivity. Upon being heated, the latter complex was found to undergo either an α-elimination or a reductive alkane elimination. In the (overall unproductive) α-elimination step, H2 and the parent alkylidene were regenerated, while the sought-after transient d2-configured tantalum(III) derivative was produced along the reaction coordinate of the reductive alkane elimination. The reactive low-valence metal center was found to rapidly attack one of the NHC substituents via an oxidative C-H activation, which led to the formation of a cyclometalated tantalum(V) hydride. The proposed elemental steps are in line with kinetic data, deuterium labeling experiments, and density functional theory (DFT) modeling studies. DFT calculations also indicated that the S = 0 spin ground state of the Ta(III) center plays a crucial role in the cyclometalation reaction. The cyclometalated Ta(V) hydride was further investigated and reacted with several alkenes and alkynes. In addition to a rich insertion and isomerization chemistry, these studies also revealed that the former hydride may undergo a formal cycloreversion and thus serve as a tantalum(III) synthon, although the original tantalum(III) intermediate is not involved in this process. The latter reactivity was observed upon reaction with internal alkynes and led to the corresponding η2-alkyne derivatives via vinyl intermediates, which rearrange via a remarkable, hitherto unprecedented, hydrogen shift reaction.
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Affiliation(s)
- Jean-Marc Mörsdorf
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Joachim Ballmann
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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156
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Zhang J, Mason AH, Wang Y, Motta A, Kobayashi T, Pruski M, Gao Y, Marks TJ. Beyond the Active Site. Cp*ZrMe
3
/Sulfated Alumina‐Catalyzed Olefin Polymerization Tacticity via Catalyst⋅⋅⋅Surface Ion‐Pairing. ChemCatChem 2021. [DOI: 10.1002/cctc.202100406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jialong Zhang
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Alexander H. Mason
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Yang Wang
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Alessandro Motta
- Dipartimento di Scienze Chimiche Università di Roma “La Sapienza” and INSTM UdR Roma Piazzale Aldo Moro 5 I-00185 Roma Italy
| | - Takeshi Kobayashi
- U.S. DOE Ames Laboratory Iowa State University Ames IA 50011–3020 USA
| | - Marek Pruski
- U.S. DOE Ames Laboratory Iowa State University Ames IA 50011–3020 USA
| | - Yanshan Gao
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Tobin J. Marks
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
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157
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Patel P, Wells RH, Kaphan DM, Delferro M, Skodje RT, Liu C. Computational Investigation of the Role of Active Site Heterogeneity for a Supported Organovanadium(III) Hydrogenation Catalyst. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00688] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Prajay Patel
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States
| | - Robert H. Wells
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309-0215, United States
| | - David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States
| | - Rex T. Skodje
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309-0215, United States
| | - Cong Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States
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158
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Fonseca J, Lu J. Single-Atom Catalysts Designed and Prepared by the Atomic Layer Deposition Technique. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01200] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Javier Fonseca
- Nanomaterial Laboratory for Catalysis and Advanced Separations, Department of Chemical Engineering, Northeastern University, 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115-5000, United States
| | - Junling Lu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China
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159
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Abstract
This review aims to give a general overview of the recent use of tungsten-based catalysts for wide environmental applications, with first some useful background information about tungsten oxides. Tungsten oxide materials exhibit suitable behaviors for surface reactions and catalysis such as acidic properties (mainly Brønsted sites), redox and adsorption properties (due to the presence of oxygen vacancies) and a photostimulation response under visible light (2.6–2.8 eV bandgap). Depending on the operating condition of the catalytic process, each of these behaviors is tunable by controlling structure and morphology (e.g., nanoplates, nanosheets, nanorods, nanowires, nanomesh, microflowers, hollow nanospheres) and/or interactions with other compounds such as conductors (carbon), semiconductors or other oxides (e.g., TiO2) and precious metals. WOx particles can be also dispersed on high specific surface area supports. Based on these behaviors, WO3-based catalysts were developed for numerous environmental applications. This review is divided into five main parts: structure of tungsten-based catalysts, acidity of supported tungsten oxide catalysts, WO3 catalysts for DeNOx applications, total oxidation of volatile organic compounds in gas phase and gas sensors and pollutant remediation in liquid phase (photocatalysis).
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160
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Maier S, Cronin SP, Vu Dinh MA, Li Z, Dyballa M, Nowakowski M, Bauer M, Estes DP. Immobilized Platinum Hydride Species as Catalysts for Olefin Isomerizations and Enyne Cycloisomerizations. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sarah Maier
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Steve P. Cronin
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Manh-Anh Vu Dinh
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Zheng Li
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Michael Dyballa
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Michal Nowakowski
- Department of Chemistry, University of Paderborn, Warburger Straße 100, Paderborn D-33098, Germany
| | - Matthias Bauer
- Department of Chemistry, University of Paderborn, Warburger Straße 100, Paderborn D-33098, Germany
| | - Deven P. Estes
- Institute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
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161
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Ma B, Blanco M, Calvillo L, Chen L, Chen G, Lau TC, Dražić G, Bonin J, Robert M, Granozzi G. Hybridization of Molecular and Graphene Materials for CO 2 Photocatalytic Reduction with Selectivity Control. J Am Chem Soc 2021; 143:8414-8425. [PMID: 34033471 DOI: 10.1021/jacs.1c02250] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the quest for designing efficient and stable photocatalytic materials for CO2 reduction, hybridizing a selective noble-metal-free molecular catalyst and carbon-based light-absorbing materials has recently emerged as a fruitful approach. In this work, we report about Co quaterpyridine complexes covalently linked to graphene surfaces functionalized by carboxylic acid groups. The nanostructured materials were characterized by X-ray photoemission spectroscopy, X-ray absorption spectroscopy, IR and Raman spectroscopies, high-resolution transmission electron microscopy and proved to be highly active in the visible-light-driven CO2 catalytic conversion in acetonitrile solutions. Exceptional stabilities (over 200 h of irradiation) were obtained without compromising the selective conversion of CO2 to products (>97%). Most importantly, complete selectivity control could be obtained upon adjusting the experimental conditions: production of CO as the only product was achieved when using a weak acid (phenol or trifluoroethanol) as a co-substrate, while formate was exclusively obtained in solutions of mixed acetonitrile and triethanolamine.
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Affiliation(s)
- Bing Ma
- Université de Paris, CNRS, Laboratoire d'Electrochimie Moléculaire (LEM), F-75006 Paris, France
| | - Matías Blanco
- Department of Chemical Sciences, INSTM Unit, University of Padova, Via F. Marzolo, 1, 35131 Padova, Italy
| | - Laura Calvillo
- Department of Chemical Sciences, INSTM Unit, University of Padova, Via F. Marzolo, 1, 35131 Padova, Italy
| | - Lingjing Chen
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, P.R. China
| | - Gui Chen
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, P.R. China
| | - Tai-Chu Lau
- Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong, P.R. China
| | - Goran Dražić
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Julien Bonin
- Université de Paris, CNRS, Laboratoire d'Electrochimie Moléculaire (LEM), F-75006 Paris, France
| | - Marc Robert
- Université de Paris, CNRS, Laboratoire d'Electrochimie Moléculaire (LEM), F-75006 Paris, France.,Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Gaetano Granozzi
- Department of Chemical Sciences, INSTM Unit, University of Padova, Via F. Marzolo, 1, 35131 Padova, Italy
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162
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Abstract
X-ray crystallography is an invaluable tool in design and development of organometallic catalysis, but application typically requires species to display sufficiently high solution concentrations and lifetimes for single crystalline samples to be obtained. In crystallo organometallic chemistry relies on chemical reactions that proceed within the single-crystal environment to access crystalline samples of reactive organometallic fragments that are unavailable by alternate means. This highlight describes approaches to in crystallo organometallic chemistry including (a) solid-gas reactions between transition metal complexes in molecular crystals and diffusing small molecules, (b) reactions of organometallic complexes within the extended lattices of metal-organic frameworks (MOFs), and (c) intracrystalline photochemical transformations to generate reactive organometallic fragments. Application of these methods has enabled characterization of catalytically important transient species, including σ-alkane adducts of transition metals, metal alkyl intermediates implicated in metal-catalyzed carbonylations, and reactive M-L multiply bonded species involved in C-H functionalization chemistry. Opportunities and challenges for in crystallo organometallic chemistry are discussed.
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Affiliation(s)
- Kaleb A Reid
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
| | - David C Powers
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
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163
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Rodriguez J, Conley MP. Ethylene Polymerization Activity of (R 3P)Ni(codH) + (cod = 1,5-cylcooctadiene) Sites Supported on Sulfated Zirconium Oxide. Inorg Chem 2021; 60:6946-6949. [PMID: 33844523 DOI: 10.1021/acs.inorgchem.1c00454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PAr3 containing o-OMe, o-Me, or o-Et substituents reacts with Brønsted sites on sulfated zirconium oxide (SZO) to form [HPAr3][SZO]. The phosphonium sites on this material react with bis(cyclooctadiene)nickel [Ni(cod)2] to form [Ni(PAr3)(codH)][SZO] that are active in ethylene polymerization reactions. Selective poisoning studies with pyridine show that ∼90% of the Ni(PAr3)(codH)+ sites in this material are active in polymerization reactions.
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Affiliation(s)
- Jessica Rodriguez
- Department of Chemistry, University of California-Riverside (UCR), Riverside, California 92521, United States
| | - Matthew P Conley
- Department of Chemistry, University of California-Riverside (UCR), Riverside, California 92521, United States
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164
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De Jesus Silva J, Pucino M, Zhai F, Mance D, Berkson ZJ, Nater DF, Hoveyda AH, Copéret C, Schrock RR. Boosting the Metathesis Activity of Molybdenum Oxo Alkylidenes by Tuning the Anionic Ligand σ Donation. Inorg Chem 2021; 60:6875-6880. [PMID: 33475353 DOI: 10.1021/acs.inorgchem.0c03173] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The catalytic performances of molecular and silica-supported molybdenum oxo alkylidene species bearing anionic O ligands [ORF9, OTPP, OHMT - where ORF9 = OC(CF3)3, OTPP = 2,3,5,6-tetraphenylphenoxy, OHMT = hexamethylterphenoxy] with different σ-donation abilities and sizes are evaluated in the metathesis of both internal and terminal olefins. Here, we show that the presence of the anionic nonafluoro-tert-butoxy X ligand in Mo(O){═CH-4-(MeO)C6H4}(THF)2{X}2 (1; X = ORF9) significantly increases the catalytic performances in the metathesis of both terminal and internal olefins. Its silica-supported equivalent displays slightly lower activity, albeit with improved stability. In sharp contrast, the molecular complexes with large aryloxy anionic X ligands show little activity, whereas the activity of the corresponding silica-supported systems is greatly improved, illustrating that surface siloxy groups are significantly smaller anionic ligands. Of all of the systems, compound 1 stands out because of its unique high activity for both terminal and internal olefins. Density functional theory modeling indicates that the ORF9 ligand is ideal in this series because of its weak σ-donating ability, avoiding overstabilization of the metallacyclobutane intermediates while keeping low barriers for [2 + 2] cycloaddition and turnstile isomerization.
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Affiliation(s)
- Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Margherita Pucino
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Feng Zhai
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Deni Mance
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Darryl F Nater
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich (ETHZ), Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Richard R Schrock
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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165
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Praveen CS, Borosy AP, Copéret C, Comas-Vives A. Strain in Silica-Supported Ga(III) Sites: Neither Too Much nor Too Little for Propane Dehydrogenation Catalytic Activity. Inorg Chem 2021; 60:6865-6874. [PMID: 33545002 PMCID: PMC8483445 DOI: 10.1021/acs.inorgchem.0c03135] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Well-defined Ga(III) sites on SiO2 are highly active, selective, and stable catalysts in the propane dehydrogenation (PDH) reaction. In this contribution, we evaluate the catalytic activity toward PDH of tricoordinated and tetracoordinated Ga(III) sites on SiO2 by means of first-principles calculations using realistic amorphous periodic SiO2 models. We evaluated the three reaction steps in PDH, namely, the C-H activation of propane to form propyl, the β-hydride (β-H) transfer to form propene and a gallium hydride, and the H-H coupling to release H2, regenerating the initial Ga-O bond and closing the catalytic cycle. Our work shows how Brønsted-Evans-Polanyi relationships are followed to a certain extent for these three reaction steps on Ga(III) sites on SiO2 and highlights the role of the strain of the reactive Ga-O pairs on such sites of realistic amorphous SiO2 models. It also shows how transition-state scaling holds very well for the β-H transfer step. While highly strained sites are very reactive sites for the initial C-H activation, they are more difficult to regenerate. The corresponding less strained sites are not reactive enough, pointing to the need for the right balance in strain to be an effective site for PDH. Overall, our work provides an understanding of the intrinsic activity of acidic Ga single sites toward the PDH reaction and paves the way toward the design and prediction of better single-site catalysts on SiO2 for the PDH reaction.
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Affiliation(s)
- C S Praveen
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - A P Borosy
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - C Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - A Comas-Vives
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
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166
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Khivantsev K, Vityuk A, Aleksandrov HA, Vayssilov GN, Alexeev OS, Amiridis MD. Catalytic conversion of ethene to butadiene or hydrogenation to ethane on HY zeolite-supported rhodium complexes: Cooperative support/Rh-center route. J Chem Phys 2021; 154:184706. [PMID: 34241012 DOI: 10.1063/5.0042322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Rh(C2H4)2 species grafted on the HY zeolite framework significantly enhance the activation of H2 that reacts with C2H4 ligands to form C2H6. While in this case, the simultaneous activation of C2H4 and H2 and the reaction between these species on zeolite-loaded Rh cations is a legitimate hydrogenation pathway yielding C2H6, the results obtained for Rh(CO)(C2H4)/HY materials exposed to H2 convincingly show that the support-assisted C2H4 hydrogenation pathway also exists. This additional and previously unrecognized hydrogenation pathway couples with the conversion of C2H4 ligands on Rh sites and contributes significantly to the overall hydrogenation activity. This pathway does not require simultaneous activation of reactants on the same metal center and, therefore, is mechanistically different from hydrogenation chemistry exhibited by molecular organometallic complexes. We also demonstrate that the conversion of zeolite-supported Rh(CO)2 complexes into Rh(CO)(C2H4) species under ambient conditions is not a simple CO/C2H4 ligand exchange reaction on Rh sites, as this process also involves the conversion of C2H4 into C4 hydrocarbons, among which 1,3-butadiene is the main product formed with the initial selectivity exceeding 98% and the turnover frequency of 8.9 × 10-3 s-1. Thus, the primary role of zeolite-supported Rh species is not limited to the activation of H2, as these species significantly accelerate the formation of the C4 hydrocarbons from C2H4 even without the presence of H2 in the feed. Using periodic density functional theory calculations, we examined several catalytic pathways that can lead to the conversion of C2H4 into 1,3-butadiene over these materials and identified the reaction route via intermediate formation of rhodacyclopentane.
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Affiliation(s)
- Konstantin Khivantsev
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Artem Vityuk
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Hristiyan A Aleksandrov
- Faculty of Chemistry and Pharmacy, University of Sofia, Blvd. J. Bauchier 1, BG-1126 Sofia, Bulgaria
| | - Georgi N Vayssilov
- Faculty of Chemistry and Pharmacy, University of Sofia, Blvd. J. Bauchier 1, BG-1126 Sofia, Bulgaria
| | - Oleg S Alexeev
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Michael D Amiridis
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
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167
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Docherty SR, Rochlitz L, Payard PA, Copéret C. Heterogeneous alkane dehydrogenation catalysts investigated via a surface organometallic chemistry approach. Chem Soc Rev 2021; 50:5806-5822. [PMID: 33972978 PMCID: PMC8111541 DOI: 10.1039/d0cs01424a] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The selective conversion of light alkanes (C2–C6 saturated hydrocarbons) to the corresponding alkene is an appealing strategy for the petrochemical industry in view of the availability of these feedstocks, in particular with the emergence of Shale gas. Here, we present a review of model dehydrogenation catalysts of light alkanes prepared via surface organometallic chemistry (SOMC). A specific focus of this review is the use of molecular strategies for the deconvolution of complex heterogeneous materials that are proficient in enabling dehydrogenation reactions. The challenges associated with the proposed reactions are highlighted, as well as overriding themes that can be ascertained from the systematic study of these challenging reactions using model SOMC catalysts. Alkane dehydrogenation over heterogeneous catalysts has attracted renewed attention in recent years. Here, well-defined catalysts based on isolated metal sites and supported Pt-alloys prepared via SOMC are discussed and compared to classical systems.![]()
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Affiliation(s)
- Scott R Docherty
- Department of Chemistry and Applied Biosciences - ETH Zürich, Vladimir Prelog 2, CH8093 Zürich, Switzerland.
| | - Lukas Rochlitz
- Department of Chemistry and Applied Biosciences - ETH Zürich, Vladimir Prelog 2, CH8093 Zürich, Switzerland.
| | - Pierre-Adrien Payard
- Department of Chemistry and Applied Biosciences - ETH Zürich, Vladimir Prelog 2, CH8093 Zürich, Switzerland.
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences - ETH Zürich, Vladimir Prelog 2, CH8093 Zürich, Switzerland.
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168
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Moccia F, Rigamonti L, Messori A, Zanotti V, Mazzoni R. Bringing Homogeneous Iron Catalysts on the Heterogeneous Side: Solutions for Immobilization. Molecules 2021; 26:2728. [PMID: 34066456 PMCID: PMC8124704 DOI: 10.3390/molecules26092728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 11/16/2022] Open
Abstract
Noble metal catalysts currently dominate the landscape of chemical synthesis, but cheaper and less toxic derivatives are recently emerging as more sustainable solutions. Iron is among the possible alternative metals due to its biocompatibility and exceptional versatility. Nowadays, iron catalysts work essentially in homogeneous conditions, while heterogeneous catalysts would be better performing and more desirable systems for a broad industrial application. In this review, approaches for heterogenization of iron catalysts reported in the literature within the last two decades are summarized, and utility and critical points are discussed. The immobilization on silica of bis(arylimine)pyridyl iron complexes, good catalysts in the polymerization of olefins, is the first useful heterogeneous strategy described. Microporous molecular sieves also proved to be good iron catalyst carriers, able to provide confined geometries where olefin polymerization can occur. Same immobilizing supports (e.g., MCM-41 and MCM-48) are suitable for anchoring iron-based catalysts for styrene, cyclohexene and cyclohexane oxidation. Another excellent example is the anchoring to a Merrifield resin of an FeII-anthranilic acid complex, active in the catalytic reaction of urea with alcohols and amines for the synthesis of carbamates and N-substituted ureas, respectively. A SILP (Supported Ionic Liquid Phase) catalytic system has been successfully employed for the heterogenization of a chemoselective iron catalyst active in aldehyde hydrogenation. Finally, FeIII ions supported on polyvinylpyridine grafted chitosan made a useful heterogeneous catalytic system for C-H bond activation.
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Affiliation(s)
- Fabio Moccia
- Dipartimento di Chimica Industriale “Toso Montanari”, Università degli Studi di Bologna, viale Risorgimento 4, 40136 Bologna, Italy; (F.M.); (A.M.); (V.Z.)
| | - Luca Rigamonti
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy;
| | - Alessandro Messori
- Dipartimento di Chimica Industriale “Toso Montanari”, Università degli Studi di Bologna, viale Risorgimento 4, 40136 Bologna, Italy; (F.M.); (A.M.); (V.Z.)
| | - Valerio Zanotti
- Dipartimento di Chimica Industriale “Toso Montanari”, Università degli Studi di Bologna, viale Risorgimento 4, 40136 Bologna, Italy; (F.M.); (A.M.); (V.Z.)
| | - Rita Mazzoni
- Dipartimento di Chimica Industriale “Toso Montanari”, Università degli Studi di Bologna, viale Risorgimento 4, 40136 Bologna, Italy; (F.M.); (A.M.); (V.Z.)
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169
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Docherty SR, Copéret C. Deciphering Metal–Oxide and Metal–Metal Interplay via Surface Organometallic Chemistry: A Case Study with CO2 Hydrogenation to Methanol. J Am Chem Soc 2021; 143:6767-6780. [DOI: 10.1021/jacs.1c02555] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Scott R. Docherty
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
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170
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Czerny F, Searles K, Šot P, Teichert JF, Menezes PW, Copéret C, Driess M. Well-Defined, Silica-Supported Homobimetallic Nickel Hydride Hydrogenation Catalyst. Inorg Chem 2021; 60:5483-5487. [PMID: 33797227 DOI: 10.1021/acs.inorgchem.0c03188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is an increasing interest to replace precious metal-based catalysts by earth-abundant nonprecious metals due to higher costs, toxicity, and declining availability of the former. Here, the synthesis of a well-defined supported nickel hydrogenation catalyst prepared by surface organometallic chemistry is reported. For this purpose, [LNi(μ-H)]2 (L = HC(CMeNC6H3(iPr)2)2) was grafted on partially dehydroxylated silica to give a homobimetallic H- and O(silica)-bridged Ni2 complex. The structure of the latter was confirmed by infrared spectroscopy, X-ray absorption near-edge structure, and extended X-ray absorption fine structure analyses as well as hydride titration studies. The immobilized catalyst was capable of hydrogenating alkenes and alkynes at low temperatures without prior activation. As an example, ethene can be hydrogenated with an initial turnover frequency of 25.5 min-1 at room temperature.
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Affiliation(s)
- Frank Czerny
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, 10623 Berlin, Germany
| | - Keith Searles
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Petr Šot
- Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Johannes F Teichert
- Department of Chemistry, Sustainable Synthetic Methods, Technische Universität Berlin, 10623 Berlin, Germany
| | - Prashanth W Menezes
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, 10623 Berlin, Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, 10623 Berlin, Germany
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171
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Korzyński MD, Berkson ZJ, Le Guennic B, Cador O, Copéret C. Leveraging Surface Siloxide Electronics to Enhance the Relaxation Properties of a Single-Molecule Magnet. J Am Chem Soc 2021; 143:5438-5444. [PMID: 33818083 DOI: 10.1021/jacs.1c00706] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Single-molecule magnets (SMMs) hold promise for unmatched information storage density as well as for applications in quantum computing and spintronics. To date, the most successful SMMs have been organometallic lanthanide complexes. However, their surface immobilization, one of the requirements for device fabrication and commercial application, remains challenging due to the sensitivity of the magnetic properties to small changes in the electronic structure of the parent SMM. Thus, finding controlled approaches to SMM surface deposition is a timely challenge. In this contribution we apply the concept of isolobality to identify siloxides present at the surface of partially dehydroxylated silica as a suitable replacement for archetypal ligand architectures in organometallic SMMs. We demonstrate theoretically and experimentally that isolated siloxide anchoring sites not only enable successful immobilization but also lead to a 2 orders of magnitude increase in magnetization relaxation times.
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Affiliation(s)
- Maciej D Korzyński
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Olivier Cador
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
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172
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Pérez-Jiménez M, Curado N, Maya C, Campos J, Ruiz E, Álvarez S, Carmona E. Experimental and Computational Studies on Quadruply Bonded Dimolybdenum Complexes with Terminal and Bridging Hydride Ligands. Chemistry 2021; 27:6569-6578. [PMID: 33469945 DOI: 10.1002/chem.202004948] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/13/2021] [Indexed: 11/07/2022]
Abstract
This contribution focuses on complex [Mo2 (H)2 (μ-AdDipp2 )2 ] (1) and tetrahydrofuran and pyridine adducts [Mo2 (H)2 (μ-AdDipp2 )2 (L)2 ] (1⋅thf and 1⋅py), which contain a trans-(H)Mo≣Mo(H) core (AdDipp2 =HC(NDipp2 )2 ; Dipp=2,6-iPr2 C6 H3 ). Computational studies provide insights into the coordination and electronic characteristics of the central trans-Mo2 H2 unit of 1, with four-coordinate, fourteen-electron Mo atoms and ϵ-agostic interactions with Dipp methyl groups. Small size C- and N-donors give rise to related complexes 1⋅L but only one molecule of P-donors, for example, PMe3 , can bind to 1, causing one of the hydrides to form a three-centered, two-electron (3c-2e) Mo-H→Mo bond (2⋅PMe3 ). A DFT analysis of the terminal and bridging hydride coordination to the Mo≣Mo bond is also reported, along with reactivity studies of the Mo-H bonds of these complexes. Reactions investigated include oxidation of 1⋅thf by silver triflimidate, AgNTf2 , to afford a monohydride [Mo2 (μ-H)(μ-NTf2 )(μ-AdDipp2 )2 ] (4), with an O,O'-bridging triflimidate ligand.
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Affiliation(s)
- Marina Pérez-Jiménez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de, Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Avda. Américo Vespucio, 49, 41092, Sevilla, Spain
| | - Natalia Curado
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de, Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Avda. Américo Vespucio, 49, 41092, Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de, Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Avda. Américo Vespucio, 49, 41092, Sevilla, Spain
| | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de, Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Avda. Américo Vespucio, 49, 41092, Sevilla, Spain
| | - Eliseo Ruiz
- Departament de Quimica Inorgànica and Institut de Quimica Teòrica i Computacional, Universitat de Barcelona, Marti i Franquès 1-11, 08028, Barcelona, Spain
| | - Santiago Álvarez
- Departament de Quimica Inorgànica and Institut de Quimica Teòrica i Computacional, Universitat de Barcelona, Marti i Franquès 1-11, 08028, Barcelona, Spain
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de, Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and University of Sevilla, Avda. Américo Vespucio, 49, 41092, Sevilla, Spain
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173
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Auvray T, Nachtigall O, Brennessel WW, Jones WD, Matson EM. Development of sterically hindered siloxide-functionalized polyoxotungstates for the complexation of 5d-metals. Dalton Trans 2021; 50:4300-4310. [PMID: 33688900 DOI: 10.1039/d1dt00256b] [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 study, we extend the family of organosilyl-functionalized trivacant Keggin polyoxotungstates, [PW9O34(RSiOH)3]3- (R = nPr, iPr, tBu), through the introduction of bulky aryl and aliphatic silanol substituents, namely phenyl, cyclohexyl and biphenyl. This work was performed in order to study the impact of these large functional groups on the accessibility of the well-defined tridentate coordination site. Coordination of hafnium to these type II hybrid polyoxotungstates was conducted in order to study the ability of the bulkier ligand pockets to support larger cations in comparison to those previously reported (e.g. Ti4+, V3+, V5+, Ge4+). Increased steric hindrance around the coordination site from the biphenyl groups resulted in much longer reaction times for the complexation reaction compared to the other functional groups used, but the impact of our design toward stabilizing reactive species proved limited, as all complexes easily undergo hydrolysis of the Hf-OtBu bond in the presence of water. Electrochemical investigations of the ligands and hafnium complexes reveal that the redox events centered on the polyoxotungstate core can be tuned by varying the substituents on the silyl fragment, and exhibit a cathodic shift after coordination of the redox inactive tetravalent cation.
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Affiliation(s)
- Thomas Auvray
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
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174
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Antil N, Kumar A, Akhtar N, Newar R, Begum W, Dwivedi A, Manna K. Aluminum Metal–Organic Framework-Ligated Single-Site Nickel(II)-Hydride for Heterogeneous Chemoselective Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04379] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neha Antil
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ajay Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naved Akhtar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rajashree Newar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Wahida Begum
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ashutosh Dwivedi
- Beamline Development and Application Section, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Kuntal Manna
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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175
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Duanghathaipornsuk S, Kim DS, Phares TL, Li CH, Jinschek JR, Alba-Rubio AC. Supersensitive CeO x-based nanocomposite sensor for the electrochemical detection of hydroxyl free radicals. NANOSCALE 2021; 13:5136-5144. [PMID: 33651058 DOI: 10.1039/d1nr00015b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
It is well known that an excess of hydroxyl radicals (˙OH) in the human body is responsible for oxidative stress-related diseases. An understanding of the relationship between the concentration of ˙OH and those diseases could contribute to better diagnosis and prevention. Here we present a supersensitive nanosensor integrated with an electrochemical method to measure the concentration of ˙OH in vitro. The electrochemical sensor consists of a composite comprised of ultrasmall cerium oxide nanoclusters (<2 nm) grafted to a highly conductive carbon deposited on a screen-printed carbon electrode (SPCE). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to analyze the interaction between cerium oxide nanoclusters and ˙OH. The CV results demonstrated that this electrochemical sensor had the capacity of detecting ˙OH with a high degree of accuracy and selectivity, achieving a consistent performance. Additionally, EIS results confirmed that our electrochemical sensor was able to differentiate ˙OH from hydrogen peroxide (H2O2), which is another common reactive oxygen species (ROS) found in the human body. The limit of detection (LOD) observed with this electrochemical sensor was of 0.6 μM. Furthermore, this nanosized cerium oxide-based electrochemical sensor successfully detected in vitro the presence of ˙OH in preosteoblast cells from newborn mouse bone tissue. The supersensitive electrochemical sensor is expected to be beneficially used in multiple applications, including medical diagnosis, fuel-cell technology, and food and cosmetic industries.
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Affiliation(s)
| | - Dong-Shik Kim
- Department of Chemical Engineering, The University of Toledo, Toledo, OH 43606, USA.
| | - Tamara L Phares
- Department of Bioengineering, The University of Toledo, Toledo, OH 43606, USA
| | - Cheng-Han Li
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Joerg R Jinschek
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Ana C Alba-Rubio
- Department of Chemical Engineering, The University of Toledo, Toledo, OH 43606, USA.
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176
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Rumyantsev AV, Pichugov AV, Bushkov NS, Aleshin DY, Strelkova TV, Lependina OL, Zhizhko PA, Zarubin DN. Direct imidation of lactones via catalytic oxo/imido heterometathesis. Chem Commun (Camb) 2021; 57:2625-2628. [PMID: 33587064 DOI: 10.1039/d0cc08274k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We report the first examples of direct imidation of lactones giving the corresponding cyclic imidates via oxo/imido heterometathesis with N-sulfinylamines catalysed by a well-defined silica-supported Ti imido complex.
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Affiliation(s)
- Andrey V Rumyantsev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia. and Department of Chemistry, Moscow State University, Vorob'evy Gory, 1, Moscow 119991, Russia
| | - Andrey V Pichugov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia. and Higher Chemical College, D. Mendeleev University of Chemical Technology of Russia, Miusskaya sq., 9, Moscow 125047, Russia
| | - Nikolai S Bushkov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia. and Department of Chemistry, Moscow State University, Vorob'evy Gory, 1, Moscow 119991, Russia
| | - Dmitry Yu Aleshin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia. and Higher Chemical College, D. Mendeleev University of Chemical Technology of Russia, Miusskaya sq., 9, Moscow 125047, Russia
| | - Tatyana V Strelkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia.
| | - Olga L Lependina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia.
| | - Pavel A Zhizhko
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia.
| | - Dmitry N Zarubin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, Moscow 119991, Russia.
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177
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Galushko AS, Gordeev EG, Kashin AS, Zubavichus YV, Ananikov VP. Visualization of catalyst dynamics and development of a practical procedure to study complex "cocktail"-type catalytic systems. Faraday Discuss 2021; 229:458-474. [PMID: 33682864 DOI: 10.1039/c9fd00125e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ability to distinguish molecular catalysis from nanoscale catalysis provides a key to success in the field of catalyst development, particularly for the transition to sustainable economies. Complex evolution of catalyst precursors, facilitated by dynamic interconversions and leaching, makes the identification of catalytically active forms an important task, which is sometimes very difficult. We propose a simple method for in situ capturing of nanoparticles with carbon-coated grids directly from reaction mixtures. Application of this method to the Mizoroki-Heck reaction allowed visualization of dynamic changes of the dominant form of palladium particles in the reaction mixtures with homogeneous and heterogeneous catalyst precursors. Changes in the size and shape of the palladium particles reflecting the progress of the catalytic chemical reaction were demonstrated. Detailed computational modeling was carried out to confirm the generality of this approach and its feasibility for different catalytic systems. The computational models revealed strong binding of metal particles to the carbon coating comprising efficient binding sites. The approach was tested for trapping Cr, Co, Ag, Ni, Cu, Pd, Cd, Ir, Ru and Rh nanoparticles from solutions containing micromolar starting concentrations of the metal precursors. The developed approach provides a unique tool for studying intrinsic properties of catalytic systems.
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Affiliation(s)
- Alexey S Galushko
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect, 47, Moscow, 119991, Russia.
| | - Evgeniy G Gordeev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect, 47, Moscow, 119991, Russia.
| | - Alexey S Kashin
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect, 47, Moscow, 119991, Russia.
| | - Yan V Zubavichus
- Boreskov Institute of Catalysis SB, Russian Academy of Sciences, Lavrentiev Ave., 5, Novosibirsk, 630090, Russia
| | - Valentine P Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect, 47, Moscow, 119991, Russia.
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178
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Zhao P, Ye L, Li G, Huang C, Wu S, Ho PL, Wang H, Yoskamtorn T, Sheptyakov D, Cibin G, Kirkland AI, Tang CC, Zheng A, Xue W, Mei D, Suriye K, Tsang SCE. Rational Design of Synergistic Active Sites for Catalytic Ethene/2-Butene Cross-Metathesis in a Rhenium-Doped Y Zeolite Catalyst. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00524] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pu Zhao
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Lin Ye
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Guangchao Li
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
- Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, Hubei 430071, People’s Republic of China
| | - Chen Huang
- Department of Materials, University of Oxford, Oxford OX1 3PH, U.K
| | - Simson Wu
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Ping-Luen Ho
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
- Department of Materials, University of Oxford, Oxford OX1 3PH, U.K
| | - Haokun Wang
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | - Tatchamapan Yoskamtorn
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
| | | | - Giannantonio Cibin
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, U.K
| | - Angus I. Kirkland
- Department of Materials, University of Oxford, Oxford OX1 3PH, U.K
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, U.K
| | - Chiu C. Tang
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, U.K
| | - Anmin Zheng
- Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, Hubei 430071, People’s Republic of China
| | - Wenjuan Xue
- School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, People’s Republic of China
| | - Donghai Mei
- School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, People’s Republic of China
- Physical and Computational Sciences Directorate & Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | | | - Shik Chi Edman Tsang
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K
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Kholodkov DN, Arzumanyan AV, Novikov RA, Kashin AS, Polezhaev AV, Vasil’ev VG, Muzafarov AM. Silica-Based Aerogels with Tunable Properties: The Highly Efficient BF 3-Catalyzed Preparation and Look inside Their Structure. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02598] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry N. Kholodkov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russian Federation
| | - Ashot V. Arzumanyan
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russian Federation
| | - Roman A. Novikov
- V.A. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilov St., Moscow 119991, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Pr., Moscow 119991, Russian Federation
| | - Alexey S. Kashin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Pr., Moscow 119991, Russian Federation
| | - Alexander V. Polezhaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russian Federation
- N.E. Bauman Moscow State Technical University, 5 Baumanskaya 2-ya St., Moscow 105005, Russian Federation
| | - Viktor G. Vasil’ev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russian Federation
| | - Aziz M. Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russian Federation
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 70 Profsoyuznaya St., Moscow 117393, Russian Federation
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181
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Zhang T, Solé‐Daura A, Fouilloux H, Poblet JM, Proust A, Carbó JJ, Guillemot G. Reaction Pathway Discrimination in Alkene Oxidation Reactions by Designed Ti‐Siloxy‐Polyoxometalates. ChemCatChem 2021. [DOI: 10.1002/cctc.202001779] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Teng Zhang
- Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | - Albert Solé‐Daura
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel-lí Domingo 1 43007 Tarragona Spain
| | - Hugo Fouilloux
- Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | - Josep M. Poblet
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel-lí Domingo 1 43007 Tarragona Spain
| | - Anna Proust
- Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | - Jorge J. Carbó
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel-lí Domingo 1 43007 Tarragona Spain
| | - Geoffroy Guillemot
- Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
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182
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Kratish Y, Nakamuro T, Liu Y, Li J, Tomotsuka I, Harano K, Nakamura E, Marks TJ. Synthesis and Characterization of a Well-Defined Carbon Nanohorn-Supported Molybdenum Dioxo Catalyst by SMART-EM Imaging. Surface Structure at the Atomic Level. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200299] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yosi Kratish
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
| | - Takayuki Nakamuro
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Yiqi Liu
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
| | - Jiaqi Li
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
| | - Issei Tomotsuka
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Koji Harano
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Tobin J. Marks
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
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183
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Copéret C, Berkson ZJ, Chan KW, de Jesus Silva J, Gordon CP, Pucino M, Zhizhko PA. Olefin metathesis: what have we learned about homogeneous and heterogeneous catalysts from surface organometallic chemistry? Chem Sci 2021; 12:3092-3115. [PMID: 34164078 PMCID: PMC8179417 DOI: 10.1039/d0sc06880b] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/08/2021] [Indexed: 11/21/2022] Open
Abstract
Since its early days, olefin metathesis has been in the focus of scientific discussions and technology development. While heterogeneous olefin metathesis catalysts based on supported group 6 metal oxides have been used for decades in the petrochemical industry, detailed mechanistic studies and the development of molecular organometallic chemistry have led to the development of robust and widely used homogeneous catalysts based on well-defined alkylidenes that have found applications for the synthesis of fine and bulk chemicals and are also used in the polymer industry. The development of the chemistry of high-oxidation group 5-7 alkylidenes and the use of surface organometallic chemistry (SOMC) principles unlocked the preparation of so-called well-defined supported olefin metathesis catalysts. The high activity and stability (often superior to their molecular analogues) and molecular-level characterisation of these systems, that were first reported in 2001, opened the possibility for the first direct structure-activity relationships for supported metathesis catalysts. This review describes first the history of SOMC in the field of olefin metathesis, and then focuses on what has happened since 2007, the date of our last comprehensive reviews in this field.
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Affiliation(s)
- Christophe Copéret
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Zachariah J Berkson
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Ka Wing Chan
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Jordan de Jesus Silva
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Christopher P Gordon
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Margherita Pucino
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Pavel A Zhizhko
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
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184
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Cr[CH(SiMe3)2]3/SiO2 catalysts for ethene polymerization: The correlation at a molecular level between the chromium loading and the microstructure of the produced polymer. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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185
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Del Rosal I, Lassalle S, Dinoi C, Thieuleux C, Maron L, Camp C. Mechanistic investigations via DFT support the cooperative heterobimetallic C-H and O-H bond activation across Ta[double bond, length as m-dash]Ir multiple bonds. Dalton Trans 2021; 50:504-510. [PMID: 33210676 DOI: 10.1039/d0dt03818k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rare heterobimetallic oxidative addition of X-H (X = C, O) bonds is reported. DFT suggests that steric constraints around the bimetallic core play a critical role to synergistically activate C-H bonds across the two metals and thus explains the exceptional H/D exchange catalytic activity of unhindered surface organometallic Ta/Ir species observed experimentally.
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Affiliation(s)
- Iker Del Rosal
- Université de Toulouse et CNRS, INSA, UPS, UMR 5215, LPCNO, 135 Avenue de Rangueil, F-31077 Toulouse, France
| | - Sébastien Lassalle
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Université de Lyon, Institut de Chimie de Lyon, CNRS, Université Lyon 1, CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Chiara Dinoi
- Université de Toulouse et CNRS, INSA, UPS, UMR 5215, LPCNO, 135 Avenue de Rangueil, F-31077 Toulouse, France
| | - Chloé Thieuleux
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Université de Lyon, Institut de Chimie de Lyon, CNRS, Université Lyon 1, CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Laurent Maron
- Université de Toulouse et CNRS, INSA, UPS, UMR 5215, LPCNO, 135 Avenue de Rangueil, F-31077 Toulouse, France
| | - Clément Camp
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Université de Lyon, Institut de Chimie de Lyon, CNRS, Université Lyon 1, CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
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186
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Castro-Fernández P, Mance D, Liu C, Moroz IB, Abdala PM, Pidko EA, Copéret C, Fedorov A, Müller CR. Propane Dehydrogenation on Ga 2O 3-Based Catalysts: Contrasting Performance with Coordination Environment and Acidity of Surface Sites. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05009] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pedro Castro-Fernández
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH-8092 Zurich, Switzerland
| | - Deni Mance
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Chong Liu
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Ilia B. Moroz
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Paula M. Abdala
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH-8092 Zurich, Switzerland
| | - Evgeny A. Pidko
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH-8092 Zurich, Switzerland
| | - Christoph R. Müller
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH-8092 Zurich, Switzerland
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187
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Olefin epoxidation with ionic liquid catalysts formed by supramolecular interactions. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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188
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Galushko AS, Prima DO, Burykina JV, Ananikov VP. Comparative study of aryl halides in Pd-mediated reactions: key factors beyond the oxidative addition step. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01133a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The comparative experimental study of Ar–X (X = Cl, Br, I) reactivity and analysis reported herein suggest that oxidative addition cannot be considered the sole reason of the observed low reactivity of aryl chlorides.
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Affiliation(s)
- Alexey S. Galushko
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - Darya O. Prima
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - Julia V. Burykina
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
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189
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Chen Z, Wasson MC, Drout RJ, Robison L, Idrees KB, Knapp JG, Son FA, Zhang X, Hierse W, Kühn C, Marx S, Hernandez B, Farha OK. The state of the field: from inception to commercialization of metal–organic frameworks. Faraday Discuss 2021; 225:9-69. [DOI: 10.1039/d0fd00103a] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We provide a brief overview of the state of the MOF field from their inception to their synthesis, potential applications, and finally, to their commercialization.
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Affiliation(s)
- Zhijie Chen
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Megan C. Wasson
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Riki J. Drout
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Lee Robison
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Karam B. Idrees
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Julia G. Knapp
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Florencia A. Son
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | - Xuan Zhang
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
| | | | | | | | | | - Omar K. Farha
- Department of Chemistry and International Institute for Nanotechnology
- Northwestern University
- Evanston
- USA
- Department of Chemical & Biological Engineering
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190
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Vandervelden CA, Khan SA, Peters B. Importance learning estimator for the site-averaged turnover frequency of a disordered solid catalyst. J Chem Phys 2020; 153:244120. [PMID: 33380094 DOI: 10.1063/5.0037450] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
For disordered catalysts such as atomically dispersed "single-atom" metals on amorphous silica, the active sites inherit different properties from their quenched-disordered local environments. The observed kinetics are site-averages, typically dominated by a small fraction of highly active sites. Standard sampling methods require expensive ab initio calculations at an intractable number of sites to converge on the site-averaged kinetics. We present a new method that efficiently estimates the site-averaged turnover frequency (TOF). The new estimator uses the same importance learning algorithm [Vandervelden et al., React. Chem. Eng. 5, 77 (2020)] that we previously used to compute the site-averaged activation energy. We demonstrate the method by computing the site-averaged TOF for a simple disordered lattice model of an amorphous catalyst. The results show that with the importance learning algorithm, the site-averaged TOF and activation energy can now be obtained concurrently with orders of magnitude reduction in required ab initio calculations.
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Affiliation(s)
- Craig A Vandervelden
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, USA
| | - Salman A Khan
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, USA
| | - Baron Peters
- Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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191
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Tahara K, Ashihara Y, Ikeda T, Kadoya T, Fujisawa JI, Ozawa Y, Tajima H, Toyoda N, Haruyama Y, Abe M. Immobilizing a π-Conjugated Catecholato Framework on Surfaces of SiO 2 Insulator Films via a One-Atom Anchor of a Platinum Metal Center to Modulate Organic Transistor Performance. Inorg Chem 2020; 59:17945-17957. [PMID: 33169615 DOI: 10.1021/acs.inorgchem.0c02163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chemical modification of insulating material surfaces is an important methodology to improve the performance of organic field-effect transistors (OFETs). However, few redox-active self-assembled monolayers (SAMs) have been constructed on gate insulator film surfaces, in contrast to the numerous SAMs formed on many types of conducting electrodes. In this study, we report a new approach to introduce a π-conjugated organic fragment in close proximity to an insulating material surface via a transition metal center acting as a one-atom anchor. On the basis of the reported coordination chemistry of a catecholato complex of Pt(II) in solution, we demonstrate that ligand exchange can occur on an insulating material surface, affording SAMs on the SiO2 surface derived from a newly synthesized Pt(II) complex containing a benzothienobenzothiophene (BTBT) framework in the catecholato ligand. The resultant SAMs were characterized in detail by water contact angle measurements, X-ray photoelectron spectroscopy, atomic force microscopy, and cyclic voltammetry. The SAMs served as good scaffolds of π-conjugated pillars for forming thin films of a well-known organic semiconductor C8-BTBT (2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene), accompanied by the engagements of the C8-BTBT molecules with the SAMs containing the common BTBT framework at the first layer on SiO2. OFETs containing the SAMs displayed improved performance in terms of hole mobility and onset voltage, presumably because of the unique interfacial structure between the organic semiconducting and inorganic insulating layers. These findings provide important insight into creating new elaborate interfaces through installing coordination chemistry in solution to solid surfaces, as well as OFET design by considering the compatibility between SAMs and organic semiconductors.
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Affiliation(s)
- Keishiro Tahara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Yuya Ashihara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Takashi Ikeda
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Tomofumi Kadoya
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Jun-Ichi Fujisawa
- Graduate School of Science and Technology, Gunma University, 1-5-1, Tenjin, Kiryu, Gunma 3768515, Japan
| | - Yoshiki Ozawa
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Hiroyuki Tajima
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Noriaki Toyoda
- Graduate School of Engineering, University of Hyogo, 2167, Shosha, Himeji, Hyogo 6712280, Japan
| | - Yuichi Haruyama
- Laboratory of Advanced Science and Technology for Industry, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 6781205, Japan
| | - Masaaki Abe
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
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192
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Mollar‐Cuni A, Borja P, Martin S, Guisado‐Barrios G, Mata JA. A Platinum Molecular Complex Immobilised on the Surface of Graphene as Active Catalyst in Alkyne Hydrosilylation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andres Mollar‐Cuni
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Pilar Borja
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Santiago Martin
- Departamento de Química Física (Facultad de Ciencias) Instituto de Ciencias de Materiales de Aragón (ICMA) Universidad de Zaragoza‐CSIC C/Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Gregorio Guisado‐Barrios
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
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193
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Dorn RW, Cendejas MC, Chen K, Hung I, Altvater NR, McDermott WP, Gan Z, Hermans I, Rossini AJ. Structure Determination of Boron-Based Oxidative Dehydrogenation Heterogeneous Catalysts with Ultra-High Field 35.2 T 11B Solid-State NMR Spectroscopy. ACS Catal 2020; 10:13852-13866. [PMID: 34413990 DOI: 10.1021/acscatal.0c03762] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Boron-based heterogenous catalysts, such as hexagonal boron nitride (h-BN) as well as supported boron oxides, are highly selective catalysts for the oxidative dehydrogenation (ODH) of light alkanes to olefins. Previous catalytic measurements and molecular characterization of boron-based catalysts by 11B solid-state NMR spectroscopy and other techniques suggests that oxidized/hydrolyzed boron clusters are the catalytically active sites for ODH. However, 11B solid-state NMR spectroscopy often suffers from limited resolution because boron-11 is an I = 3/2 half-integer quadrupolar nucleus. Here, ultra-high magnetic field (B 0 = 35.2 T) is used to enhance the resolution of 11B solid-state NMR spectra and unambiguously determine the local structure and connectivity of boron species in h-BN nanotubes used as a ODH catalyst (spent h-BNNT), boron substituted MCM-22 zeolite [B-MWW] and silica supported boron oxide [B/SiO2] before and after use as an ODH catalyst. One-dimensional direct excitation 11B NMR spectra recorded at B 0 = 35.2 T are near isotropic in nature, allowing for the easy identification of all boron species. Two-dimensional 1H-11B heteronuclear correlation NMR spectra aid in the identification of boron species with B-OH functionality. Most importantly, 2D 11B dipolar double-quantum single-quantum homonuclear correlation NMR experiments were used to unambiguously probe boron-boron connectivity within all heterogeneous catalysts. These experiments are practically infeasible at lower, more conventional magnetic fields due to a lack of resolution and reduced NMR sensitivity. The detailed molecular structures determined for the amorphous oxidized/hydrolyzed boron layers on these heterogenous catalysts will aid in the future development of next generation ODH catalysts.
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Affiliation(s)
- Rick W. Dorn
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, US Department of Energy, Ames, Iowa 50011, United States
| | - Melissa C. Cendejas
- Department of Chemistry, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Kuizhi Chen
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Ivan Hung
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Natalie R. Altvater
- Department of Chemical and Biological Engineering, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - William P. McDermott
- Department of Chemistry, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Zhehong Gan
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Ive Hermans
- Department of Chemistry, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
- Department of Chemical and Biological Engineering, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
| | - Aaron J. Rossini
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, US Department of Energy, Ames, Iowa 50011, United States
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194
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Yang Y, Zhang X, Kanchanakungwankul S, Lu Z, Noh H, Syed ZH, Farha OK, Truhlar DG, Hupp JT. Unexpected “Spontaneous” Evolution of Catalytic, MOF-Supported Single Cu(II) Cations to Catalytic, MOF-Supported Cu(0) Nanoparticles. J Am Chem Soc 2020; 142:21169-21177. [DOI: 10.1021/jacs.0c10367] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ying Yang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xuan Zhang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Siriluk Kanchanakungwankul
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Zhiyong Lu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- College of Mechanics and Materials, Hohai University, Nanjing 210098, China
| | - Hyunho Noh
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Zoha H. Syed
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Omar K. Farha
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Donald G. Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Joseph T. Hupp
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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195
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Cui Z, Feng X, Li H, Tan T. Interconversion of Lewis acid and Brønsted acid catalysts in biomass-derived paraxylene synthesis. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115942] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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196
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Lassalle S, Jabbour R, Del Rosal I, Maron L, Fonda E, Veyre L, Gajan D, Lesage A, Thieuleux C, Camp C. Stepwise construction of silica-supported tantalum/iridium heteropolymetallic catalysts using surface organometallic chemistry. J Catal 2020. [DOI: 10.1016/j.jcat.2020.10.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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197
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Ashuiev A, Allouche F, Wili N, Searles K, Klose D, Copéret C, Jeschke G. Molecular and supported Ti(iii)-alkyls: efficient ethylene polymerization driven by the π-character of metal-carbon bonds and back donation from a singly occupied molecular orbital. Chem Sci 2020; 12:780-792. [PMID: 34163812 PMCID: PMC8178971 DOI: 10.1039/d0sc04436a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
While Ti(iii) alkyl species are the proposed active sites in Ziegler–Natta ethylene polymerization catalysts, the corresponding well-defined homogeneous catalysts are not known. We report that well-defined neutral β-diiminato Ti(iii) alkyl species, namely [Ti(nacnac)(CH2tBu)2] and its alumina-grafted derivative [(AlsO)Ti(nacnac)(CH2tBu)], are active towards ethylene polymerization at moderate pressures and temperatures and possess an electron configuration well-adapted to insertion of ethylene. Advanced EPR spectroscopy showed that ethylene insertion into a Ti(iii)–C bond takes place during polymerization from Ti(nacnac)(CH2tBu)2. A combination of pulsed EPR spectroscopy and DFT calculations, based on a crystal structure of [Ti(nacnac)(CH2tBu)2], enabled us to reveal details about the structure and electronic configurations of both molecular and surface-grafted species. For both compounds, the α-agostic C–H interaction, which involves the singly occupied molecular orbital, indicates a π character of the metal–carbon bond; this π character is enhanced upon ethylene coordination, leading to a nearly barrier-less C2H4 insertion into Ti(iii)–C bonds after this first step. During coordination, back donation from the SOMO to the π*(C2H4) occurs, leading to stabilization of π-ethylene complexes and to a significant lowering of the overall energy of the C2H4 insertion transition state. In d1 alkyl complexes, ethylene insertion follows an original “augmented” Cossee–Arlman mechanism that involves the delocalization of unpaired electrons between the SOMO, π*(C2H4) and σ*(Ti–C) in the transition state, which further favors ethylene insertion. All these factors facilitate ethylene polymerization on Ti(iii) neutral alkyl species and make d1 alkyl complexes potentially more effective polymerization catalysts than their d0 analogues. Ti(iii) alkyl species polymerize ethylene via an original mechanism, which involves back donation to the π*(C2H4) and a delocalization of the unpaired electron in the transition state of C2H4 insertion into the partially alkylidenic Ti(iii)–C bond.![]()
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Affiliation(s)
- Anton Ashuiev
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland
| | - Florian Allouche
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland
| | - Nino Wili
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland
| | - Keith Searles
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland
| | - Daniel Klose
- 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
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir Prelog Weg 1-5 CH-8093 Zürich Switzerland
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198
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Pearce AJ, Cheng Y, Dunscomb RJ, Tonks IA. Generation of Masked Ti II Intermediates from Ti IV Amides via β-H Abstraction or Alkyne Deprotonation: An Example of Ti-Catalyzed Nitrene-Coupled Transfer Hydrogenation. Organometallics 2020; 39:3771-3774. [PMID: 34321708 DOI: 10.1021/acs.organomet.0c00577] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Simple Ti amide complexes are shown to act as sources for masked TiII intermediates via several pathways, as demonstrated through the investigation of a unique Ti-catalyzed nitrene-coupled transfer hydrogenation of 3-hexyne. This reaction proceeds through reduction of azobenzene by a masked TiII catalyst, wherein both amines and 3-hexyne can serve as the hydrogen source/reductant for Ti by forming putative titanaziridines via β-H abstraction or putative titanacyclopentynes via protonolysis, respectively.
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Affiliation(s)
- Adam J Pearce
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Yukun Cheng
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Rachel J Dunscomb
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
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199
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König M, Rigo M, Chaoui N, Tran Ngoc T, Epping JD, Schmidt J, Pachfule P, Ye M, Trunk M, Teichert JF, Drieß M, Thomas A. Immobilization of an Iridium Pincer Complex in a Microporous Polymer for Application in Room‐Temperature Gas Phase Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Michaela König
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Massimo Rigo
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Germany
| | - Nicolas Chaoui
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Trung Tran Ngoc
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Germany
| | - Jan Dirk Epping
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Germany
| | - Johannes Schmidt
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Pradip Pachfule
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Meng‐Yang Ye
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Matthias Trunk
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
| | - Johannes F. Teichert
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Germany
| | - Matthias Drieß
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Germany
| | - Arne Thomas
- Institut für Chemie Technische Universität Berlin Hardenbergstrasse 40 10623 Berlin Germany
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200
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König M, Rigo M, Chaoui N, Tran Ngoc T, Epping JD, Schmidt J, Pachfule P, Ye M, Trunk M, Teichert JF, Drieß M, Thomas A. Immobilization of an Iridium Pincer Complex in a Microporous Polymer for Application in Room-Temperature Gas Phase Catalysis. Angew Chem Int Ed Engl 2020; 59:19830-19834. [PMID: 32614513 PMCID: PMC7692909 DOI: 10.1002/anie.202004092] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/26/2020] [Indexed: 11/06/2022]
Abstract
An iridium dihydride pincer complex [IrH2 (POCOP)] is immobilized in a hydroxy-functionalized microporous polymer network using the concepts of surface organometallic chemistry. The introduction of this novel, truly innocent support with remote OH-groups enables the formation of isolated active metal sites embedded in a chemically robust and highly inert environment. The catalyst maintained high porosity and without prior activation exhibited efficacy in the gas phase hydrogenation of ethene and propene at room temperature and low pressure. The catalyst can be recycled for at least four times.
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Affiliation(s)
- Michaela König
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Massimo Rigo
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 11510623BerlinGermany
| | - Nicolas Chaoui
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Trung Tran Ngoc
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 11510623BerlinGermany
| | - Jan Dirk Epping
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 11510623BerlinGermany
| | - Johannes Schmidt
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Pradip Pachfule
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Meng‐Yang Ye
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Matthias Trunk
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
| | - Johannes F. Teichert
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 11510623BerlinGermany
| | - Matthias Drieß
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 11510623BerlinGermany
| | - Arne Thomas
- Institut für ChemieTechnische Universität BerlinHardenbergstrasse 4010623BerlinGermany
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