1
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DeMuth JC, Kim YL, Hall JN, Syed ZH, Deng K, Perras FA, Ferrandon MS, Kropf AJ, Liu C, Kaphan DM, Delferro M. Silicon Nitride Surface Enabled Propane Dehydrogenation Catalyzed by Supported Organozirconium. J Am Chem Soc 2024; 146:14404-14409. [PMID: 38754022 DOI: 10.1021/jacs.4c02776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Mesoporous silicon nitride (Si3N4) is a nontraditional support for the chemisorption of organometallic complexes with the potential for enhancing catalytic activity through features such as the increased Lewis basicity of nitrogen for heterolytic bond activation, increased ligand donor strength, and metal-ligand orbital overlap. Here, tetrabenzyl zirconium (ZrBn4) was chemisorbed on Si3N4, and the resulting supported organometallic species was characterized by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), Dynamic Nuclear Polarization-enhanced Solid State Nuclear Magnetic Resonance (DNP-SSNMR), and X-ray Absorption Spectroscopy (XAS). Based on the hypothesis that the nitride might enable facile heterolytic C-H bond activation along the Zr-N bond, this material was found to be a highly active (1.53 molpropene molZr-1 h-1 at 450 °C) and selective (99% to propylene) catalyst for propane dehydrogenation. In contrast, the homologous silica supported complex exhibited negligible activity under these conditions.
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Affiliation(s)
- Joshua C DeMuth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Yu Lim Kim
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jacklyn N Hall
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Zoha H Syed
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Kaixi Deng
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Frédéric A Perras
- Chemical and Biological Sciences Division, Ames National Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Magali S Ferrandon
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - A Jeremy Kropf
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Cong Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - David M Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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2
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Samudrala K, Akram MO, Dutton JL, Martin CD, Conley MP. Formation of Strong Boron Lewis Acid Sites on Silica. Inorg Chem 2024; 63:4939-4946. [PMID: 38451151 PMCID: PMC10951953 DOI: 10.1021/acs.inorgchem.3c04121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/08/2024]
Abstract
Bis(1-methyl-ortho-carboranyl)borane (HBMeoCb2) is a very strong Lewis acid that reacts with the isolated silanols present on silica partially dehydroxylated at 700 °C (SiO2-700) to form the well-defined Lewis site MeoCb2B(OSi≡) (1) and H2. 11B{1H} magic-angle spinning (MAS) nuclear magnetic resonance (NMR) data of 1 are consistent with that of a three-coordinate boron site. Contacting 1 with O═PEt3 (triethylphosphine oxide TEPO) and measuring 31P{1H} MAS NMR spectra show that 1 preserves the strong Lewis acidity of HBMeoCb2. Hydride ion affinity and fluoride ion affinity calculations using small molecules analogs of 1 also support the strong Lewis acidity of the boron sites in this material. Reactions of 1 with Cp2Hf(13CH3)2 show that the Lewis sites are capable of abstracting methide groups from Hf to form [Cp2Hf-13CH3][H313C-B(MeoCb2)OSi≡], but with a low overall efficiency.
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Affiliation(s)
| | - Manjur O. Akram
- Department
of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798, United States
| | - Jason L. Dutton
- Department
of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Caleb D. Martin
- Department
of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798, United States
| | - Matthew P. Conley
- Department
of Chemistry, University of California, Riverside, California 92521, United States
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3
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Hall JN, Chapovetsky A, Kanbur U, Kim YL, McCullough KE, Syed ZH, Johnson CS, Ferrandon MS, Liu C, Kropf AJ, Delferro M, Kaphan DM. Oxidative Grafting for Catalyst Synthesis in Surface Organometallic Chemistry. ACS APPLIED MATERIALS & INTERFACES 2023; 15:53498-53514. [PMID: 37945527 DOI: 10.1021/acsami.3c12656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
The development of new methods of catalyst synthesis with the potential to generate active site structures orthogonal to those accessible by traditional protocols is of great importance for discovering new materials for addressing challenges in the evolving energy and chemical economy. In this work, the generality of oxidative grafting of organometallic and well-defined molecular metal precursors onto redox-active surfaces such as manganese dioxide (MnO2) and lithium manganese oxide (LiMn2O4) is investigated. Nine molecular metal precursors are explored, spanning groups 4-11 and each of the three periods of the transition metal series. The byproducts of the oxidative grafting reaction, a mixture of protodemetalation and ligand homocoupling for several organometallic precursors, was found to provide insights into the mechanism of the grafting reaction, suggesting oxidation of both the metal d-orbitals, as well as the metal-carbon σ-bonds, resulting in ejection of the ligand radical fragment. Analysis of the supported structures and oxidation state by X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) suggests that several of the chemisorbed metal ions are intercalated into interstitial vacancies of the surface structure while other complexes form intact molecular fragments on the surface. Proof of concept for the use of this metalation protocol to generate diverse, metal-dependent catalytic performance is demonstrated by the application of these materials in the conversion of cyclohexane to K/A oil (cyclohexanol and cyclohexanone) with tert-butyl hydroperoxide, as well as in the low-temperature (T ≤ 50 °C) oxidation of carbon monoxide to carbon dioxide.
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Affiliation(s)
- Jacklyn N Hall
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Alon Chapovetsky
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Uddhav Kanbur
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Yu Lim Kim
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Katherine E McCullough
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Zoha H Syed
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Christopher S Johnson
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Magali S Ferrandon
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Cong Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - A Jeremy Kropf
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - David M Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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4
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Nifant’ev IE, Komarov PD, Kostomarova OD, Kolosov NA, Ivchenko PV. MAO- and Borate-Free Activating Supports for Group 4 Metallocene and Post-Metallocene Catalysts of α-Olefin Polymerization and Oligomerization. Polymers (Basel) 2023; 15:3095. [PMID: 37514483 PMCID: PMC10384419 DOI: 10.3390/polym15143095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Modern industry of advanced polyolefins extensively uses Group 4 metallocene and post-metallocene catalysts. High-throughput polyolefin technologies demand the use of heterogeneous catalysts with a given particle size and morphology, high thermal stability, and controlled productivity. Conventional Group 4 metal single-site heterogeneous catalysts require the use of high-cost methylalumoxane (MAO) or perfluoroaryl borate activators. However, a number of inorganic phases, containing highly acidic Lewis and Brønsted sites, are able to activate Group 4 metal pre-catalysts using low-cost and affordable alkylaluminums. In the present review, we gathered comprehensive information on MAO- and borate-free activating supports of different types and discussed the surface nature and chemistry of these phases, examples of their use in the polymerization of ethylene and α-olefins, and prospects of the further development for applications in the polyolefin industry.
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Affiliation(s)
- Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
| | | | - Nikolay A. Kolosov
- NIOST LLC, Kuzovlevsky Tr. 2-270, 634067 Tomsk, Russia; (O.D.K.); (N.A.K.)
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
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5
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Samudrala KK, Conley MP. Effects of surface acidity on the structure of organometallics supported on oxide surfaces. Chem Commun (Camb) 2023; 59:4115-4127. [PMID: 36912586 DOI: 10.1039/d3cc00047h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Well-defined organometallics supported on high surface area oxides are promising heterogeneous catalysts. An important design factor in these materials is how the metal interacts with the functionalities on an oxide support, commonly anionic X-type ligands derived from the reaction of an organometallic M-R with an -OH site on the oxide. The metal can either form a covalent M-O bond or form an electrostatic M+⋯-O ion-pair, which impacts how well-defined organometallics will interact with substrates in catalytic reactions. A less common reaction pathway involves the reaction of a Lewis site on the oxide with the organometallic, resulting in abstraction to form an ion-pair, which is relevant to industrial olefin polymerization catalysts. This Feature Article views the spectrum of reactivity between an organometallic and an oxide through the prism of Brønsted and/or Lewis acidity of surface sites and draws analogies to the molecular frame where Lewis and Brønsted acids are known to form reactive ion-pairs. Applications of the well-defined sites developed in this article are also discussed.
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Affiliation(s)
| | - Matthew P Conley
- Department of Chemistry, University of California, Riverside, California 92521, USA.
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6
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Gao J, Zhu L, Conley MP. Cationic Tantalum Hydrides Catalyze Hydrogenolysis and Alkane Metathesis Reactions of Paraffins and Polyethylene. J Am Chem Soc 2023; 145:4964-4968. [PMID: 36827508 DOI: 10.1021/jacs.2c13610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Sulfated aluminum oxide (SAO), a high surface area material containing sulfate anions that behave like weakly coordinating anions, reacts with Ta(═CHtBu)(CH2tBu)3 to form [Ta(CH2tBu)2(O-)2][SAO] (1). Subsequent treatment with H2 forms Ta-H+ sites supported on SAO that are active in hydrogenolysis and alkane metathesis reactions. In both reactions Ta-H+ is more active than related neutral Ta-H sites supported on silica. This reaction chemistry extends to melts of high-density polyethylene (HDPE), where Ta-H+ converts 30% of a low molecular weight HDPE (Mn = 2.5 kg mol-1; Đ = 3.6) to low molecular weight paraffins under hydrogenolysis conditions. Under alkane metathesis conditions Ta-H+ converts this HDPE to a high MW fraction (Mn = 6.2 kDa; Đ = 2.3) and low molecular weight alkane products (C13-C32). These results show that incorporating charge as a design element in supported d0 metal hydrides is a viable strategy to increase the reaction rate in challenging reactions involving reorganization of C-C bonds in alkanes.
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Affiliation(s)
- Jiaxin Gao
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Lingchao Zhu
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Matthew P Conley
- Department of Chemistry, University of California, Riverside, California 92521, United States
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7
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Liu S, Liu G, Yang L, Liu X, Wang M, Qin L, Zheng M. Metal-Catalyzed Formation of Organic Pollutants Intermediated by Organic Free Radicals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:14550-14561. [PMID: 36168137 DOI: 10.1021/acs.est.2c05892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Metal compounds play important roles in the formation of organic pollutants during thermal-related processes. However, the metal-catalyzed predominant organic pollutants have not previously been characterized nor have any detailed catalytic mechanisms been clarified. Here, we preciously distinguished the multiple organic free radical intermediates on metal catalyst surfaces during the organic pollutant formation through laboratory and theoretical studies. Differences between the organic free radical intermediate species, concentrations, and formation mechanisms under the catalysis of different metal compounds were investigated. The results were verified mutually with the differed characteristics of organic pollutant products. CuO predominantly catalyzed the formation of highly chlorinated phenoxy radical intermediates and dioxins. High proportions of semiquinone radicals and oxygen-containing derivatives were found on ZnO surfaces. Differently, methyl-substituted phenoxy radicals and long-chain products formed on Al2O3 surfaces. The results will be instructive for the target emission control of priority organic pollutants during thermal-related processes rich in different metal compounds.
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Affiliation(s)
- Shuting Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guorui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
| | - Lili Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaoyun Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingxuan Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linjun Qin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Minghui Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
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8
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Samudrala KK, Huynh W, Dorn RW, Rossini AJ, Conley MP. Formation of a Strong Heterogeneous Aluminum Lewis Acid on Silica. Angew Chem Int Ed Engl 2022; 61:e202205745. [DOI: 10.1002/anie.202205745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/10/2022]
Affiliation(s)
| | - Winn Huynh
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Rick W. Dorn
- Department of Chemistry Iowa State University Ames IA 50011 USA
- U.S. Department of Energy Ames Laboratory Ames IA 50011 USA
| | - Aaron J. Rossini
- Department of Chemistry Iowa State University Ames IA 50011 USA
- U.S. Department of Energy Ames Laboratory Ames IA 50011 USA
| | - Matthew P. Conley
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
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9
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Merle N, Tabassum T, Scott SL, Motta A, Szeto K, Taoufik M, Gauvin RM, Delevoye L. High‐Field NMR, Reactivity, and DFT Modeling Reveal the γ‐Al
2
O
3
Surface Hydroxyl Network**. Angew Chem Int Ed Engl 2022; 61:e202207316. [PMID: 35785426 PMCID: PMC9541507 DOI: 10.1002/anie.202207316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 11/10/2022]
Abstract
Aluminas are strategic materials used in many major industrial processes, either as catalyst supports or as catalysts in their own right. The transition alumina γ‐Al2O3 is a privileged support, whose reactivity can be tuned by thermal activation. This study provides a qualitative and quantitative assessment of the hydroxyl groups present on the surface of γ‐Al2O3 at three different dehydroxylation temperatures. The principal [AlOH] configurations are identified and described in unprecedented detail at the molecular level. The structures were established by combining information from high‐field 1H and 27Al solid‐state NMR, IR spectroscopy and DFT calculations, as well as selective reactivity studies. Finally, the relationship between the hydroxyl structures and the molecular‐level structures of the active sites in catalytic alkane metathesis is discussed.
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Affiliation(s)
- Nicolas Merle
- Univ. Lille, CNRS Centrale Lille Univ. Artois, UMR 8181, UCCS, Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Tarnuma Tabassum
- Department of Chemistry & Biochemistry and Department of Chemical Engineering University of California, Santa Barbara Santa Barbara CA 93106 USA
| | - Susannah L. Scott
- Department of Chemistry & Biochemistry and Department of Chemical Engineering University of California, Santa Barbara Santa Barbara CA 93106 USA
| | - Alessandro Motta
- Dipartimento di Scienze Chimiche Università di Roma “La Sapienza” and INSTM, UdR Roma Piazzale Aldo Moro 5 00185 Roma Italy
| | - Kai Szeto
- Univ. Lyon 1, CPE Lyon, CNRS UMR 5265 Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2) Université de Lyon 69616 Villeurbanne France
| | - Mostafa Taoufik
- Univ. Lyon 1, CPE Lyon, CNRS UMR 5265 Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2) Université de Lyon 69616 Villeurbanne France
| | - Régis Michaël Gauvin
- Chimie ParisTech PSL University, CNRS Institut de Recherche de Chimie Paris 75005 Paris France
| | - Laurent Delevoye
- Univ. Lille, CNRS Centrale Lille Univ. Artois, UMR 8181, UCCS, Unité de Catalyse et Chimie du Solide 59000 Lille France
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10
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Conley M, Samudrala KK, Huynh W, Dorn RW, Rossini AJ. Formation of a Strong Heterogeneous Aluminum Lewis Acid on Silica. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matthew Conley
- University of California, Riverside Chemistry 501 Big Springs Rd 92521 Riverside UNITED STATES
| | | | - Winn Huynh
- University of California Riverside Chemistry UNITED STATES
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11
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Merle N, Tabassum T, Scott S, Motta A, Szeto K, Taoufik M, Gauvin RM, Delevoye L. High‐Field NMR, Reactivity, and DFT Modeling Reveal the γ‐Al2O3 Surface Hydroxyl Network. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nicolas Merle
- Universite de Lille Faculté des Sciences et Technologies: Universite de Lille Faculte des Sciences et Technologies UCCS FRANCE
| | - Tarnuma Tabassum
- UCSB: University of California Santa Barbara Department of Chemical Engineering FRANCE
| | - Susannah Scott
- UCSB: University of California Santa Barbara Department of Chemical Engineering FRANCE
| | - Alessandro Motta
- Sapienza Università di Roma: Universita degli Studi di Roma La Sapienza Dipartimento di Scienze Chimiche ITALY
| | - Kai Szeto
- Lyon 1 University: Universite Claude Bernard Lyon 1 CPE FRANCE
| | - Mostafa Taoufik
- Lyon 1 University: Universite Claude Bernard Lyon 1 CPE Lyon FRANCE
| | - Régis Michaël Gauvin
- Institut de Recherche de Chimie Paris Team COCP Chimie ParisTech11 rue Pierrre et Marie Curie 75005 Paris FRANCE
| | - Laurent Delevoye
- Universite de Lille Faculte des Sciences et Technologies UCCS FRANCE
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12
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Bekyarova E, Conley MP. The coordination chemistry of oxide and nanocarbon materials. Dalton Trans 2022; 51:8557-8570. [PMID: 35586978 DOI: 10.1039/d2dt00459c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Understanding how a ligand affects the steric and electronic properties of a metal is the cornerstone of the inorganic chemistry enterprise. What happens when the ligand is an extended surface? This question is central to the design and implementation of state-of-the-art functional materials containing transition metals. This perspective will describe how these two very different sets of extended surfaces can form well-defined coordination complexes with metals. In the Green formalism, functionalities on oxide surfaces react with inorganics to form species that contain X-type or LX-type interactions between the metal and the oxide. Carbon surfaces are neutral L-type ligands; this perspective focuses on carbons that donate six electrons to a metal. The nature of this interaction depends on the curvature, and thereby orbital overlap, between the metal and the extended π-system from the nanocarbon.
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Affiliation(s)
- Elena Bekyarova
- Department of Chemistry, University of California, Riverside, California 92521, USA.
| | - Matthew P Conley
- Department of Chemistry, University of California, Riverside, California 92521, USA.
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13
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Culver D, Dorn RW, Venkatesh A, Meeprasert J, Rossini AJ, Pidko EA, Lipton AS, Lief GR, Conley MP. Active Sites in a Heterogeneous Organometallic Catalyst for the Polymerization of Ethylene. ACS CENTRAL SCIENCE 2021; 7:1225-1231. [PMID: 34345672 PMCID: PMC8323245 DOI: 10.1021/acscentsci.1c00466] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Indexed: 06/13/2023]
Abstract
Heterogeneous derivatives of catalysts discovered by Ziegler and Natta are important for the industrial production of polyolefin plastics. However, the interaction between precatalysts, alkylaluminum activators, and oxide supports to form catalytically active materials is poorly understood. This is in contrast to homogeneous or model heterogeneous catalysts that contain resolved molecular structures that relate to activity and selectivity in polymerization reactions. This study describes the reactivity of triisobutylaluminum with high surface area aluminum oxide and a zirconocene precatalyst. Triisobutylaluminum reacts with the zirconocene precatalyst to form hydrides and passivates -OH sites on the alumina surface. The combination of passivated alumina and zirconium hydrides formed in this mixture generates ion pairs that polymerize ethylene.
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Affiliation(s)
- Damien
B. Culver
- Department
of Chemistry, University of California, Riverside, California 92507, United States
| | - Rick W. Dorn
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Amrit Venkatesh
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Jittima Meeprasert
- Inorganic
Systems Engineering Group, Department of Chemical Engineering, Faculty
of Applied Sciences, Delft University of
Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Aaron J. Rossini
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Evgeny A. Pidko
- Inorganic
Systems Engineering Group, Department of Chemical Engineering, Faculty
of Applied Sciences, Delft University of
Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Andrew S. Lipton
- Environmental
Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Graham R. Lief
- Bartlesville
Research and Technology Center, Chevron
Phillips Chemical, Bartlesville, Oklahoma 74003, United States
| | - Matthew P. Conley
- Department
of Chemistry, University of California, Riverside, California 92507, United States
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14
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Larabi C, Chen C, Merle N, Charlin M, Szeto KC, De Mallmann A, Benayad A, B. Meziane K, Kaddouri A, Nguyen HP, Taoufik M. Well-defined surface tungstenocarbyne complex through the reaction of [W(CtBu)(CH2tBu)3] with CeO2: a highly stable precatalyst for NOx reduction with NH3. NEW J CHEM 2021. [DOI: 10.1039/d0nj02146f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly-efficient NH3-SCR single site catalyst W(CtBu)(CH2tBu)3/CeO2–200, was prepared by surface organometallic chemistry approach. This catalyst showed high catalytic activity and stability with a broad operational temperature window.
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Affiliation(s)
- Cherif Larabi
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Cuirong Chen
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Nicolas Merle
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Marc Charlin
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Kai C. Szeto
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | | | - Anass Benayad
- Université Grenoble Alpes
- CEA-LITEN
- 38054 Grenoble Cedex 9
- France
| | - Karima B. Meziane
- Université de Lille
- CNRS
- UMR 8516 - LASIRE - Laboratoire de Spectroscopie pour les Interactions
- la Réactivité et l'Environnement
- F-59000 Lille
| | - Akim Kaddouri
- Université Lyon 1 - CNRS
- UMR 5256
- IRCELYON
- F-69626 Villeurbanne
- France
| | | | - Mostafa Taoufik
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
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15
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Larabi C, Norsic S, Khrouz L, Boyron O, Szeto KC, Lucas C, Taoufik M, De Mallmann A. Oxide-Supported Titanium Catalysts: Structure–Activity Relationship in Heterogeneous Catalysis, with the Choice of Support as a Key Step. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cherif Larabi
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Sébastien Norsic
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Lhoussain Khrouz
- Université de Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, 46 Allée d’Italie, 69342 Lyon, France
| | - Olivier Boyron
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Kai Chung Szeto
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Christine Lucas
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Mostafa Taoufik
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Aimery De Mallmann
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
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16
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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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17
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Witzke RJ, Chapovetsky A, Conley MP, Kaphan DM, Delferro M. Nontraditional Catalyst Supports in Surface Organometallic Chemistry. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03350] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan J. Witzke
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Alon Chapovetsky
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew P. Conley
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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18
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Culver DB, Venkatesh A, Huynh W, Rossini AJ, Conley MP. Al(OR F) 3 (R F = C(CF 3) 3) activated silica: a well-defined weakly coordinating surface anion. Chem Sci 2019; 11:1510-1517. [PMID: 34084380 PMCID: PMC8148071 DOI: 10.1039/c9sc05904k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Weakly Coordinating Anions (WCAs) containing electron deficient delocalized anionic fragments that are reasonably inert allow for the isolation of strong electrophiles. Perfluorinated borates, perfluorinated aluminum alkoxides, and halogenated carborane anions are a few families of WCAs that are commonly used in synthesis. Application of similar design strategies to oxide surfaces is challenging. This paper describes the reaction of Al(ORF)3*PhF (RF = C(CF3)3) with silica partially dehydroxylated at 700 °C (SiO2-700) to form the bridging silanol [triple bond, length as m-dash]Si-OH⋯Al(ORF)3 (1). DFT calculations using small clusters to model 1 show that the gas phase acidity (GPA) of the bridging silanol is 43.2 kcal mol-1 lower than the GPA of H2SO4, but higher than the strongest carborane acids, suggesting that deprotonated 1 would be a WCA. Reactions of 1 with NOct3 show that 1 forms weaker ion-pairs than classical WCAs, but stronger ion-pairs than carborane or borate anions. Though 1 forms stronger ion-pairs than these state-of-the-art WCAs, 1 reacts with alkylsilanes to form silylium type surface species. To the best of our knowledge, this is the first example of a silylium supported on derivatized silica.
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Affiliation(s)
- Damien B Culver
- Department of Chemistry, University of California Riverside California 92521 USA
| | - Amrit Venkatesh
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
| | - Winn Huynh
- Department of Chemistry, University of California Riverside California 92521 USA
| | - Aaron J Rossini
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
| | - Matthew P Conley
- Department of Chemistry, University of California Riverside California 92521 USA
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19
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Alinezhad H, Ghasemi S, Cheraghian M. MOF nano porous-supported C-S cross coupling through one-pot post-synthetic modification. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.07.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Huang K, Fu H, Shi W, Wang H, Cao Y, Yang G, Peng F, Wang Q, Liu Z, Zhang B, Yu H. Competitive adsorption on single-atom catalysts: Mechanistic insights into the aerobic oxidation of alcohols over Co N C. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.047] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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Werghi B, Bendjeriou‐Sedjerari A, Jedidi A, Morlanes N, Abou‐Hamad E, Bhatte K, Guan E, Ma T, Aguilar‐Tapia A, Ould‐Chikh S, Cavallo L, Gates BC, Basset J. Tungsten Catalyst Incorporating a Well‐Defined Tetracoordinated Aluminum Surface Ligand for Selective Metathesis of Propane, [(≡Si−O−Si≡)(≡Si−O−)
2
Al−O−W(≡C
t
Bu) (H)
2
]. ChemCatChem 2018. [DOI: 10.1002/cctc.201801779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Baraa Werghi
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | | | - Abdesslem Jedidi
- Department of Chemistry Faculty of Science King Abdulaziz University (KAU) Jeddah 21589 Kingdom of Saudi Arabia
| | - Natalia Morlanes
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Edy Abou‐Hamad
- King Abdullah University of Science and Technology(KAUST) Core Labs Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Kushal Bhatte
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Erjia Guan
- Department of Materials Science and Engineering University of California Davis CA 95616 USA
| | - Tao Ma
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | | | - Samy Ould‐Chikh
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Luigi Cavallo
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Bruce C. Gates
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | - Jean‐Marie Basset
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
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22
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Lam E, Copéret C. Understanding Trends in 27
Al Chemical Shifts and Quadrupolar Coupling Constants in Chloroalkyl Aluminum [AlCl
x
(Me)3 − x
]
n
= 1 or 2
Compounds. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201800120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Erwin Lam
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1 - 5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1 - 5 8093 Zürich Switzerland
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23
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24
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Szeto KC, Jones ZR, Merle N, Rios C, Gallo A, Le Quemener F, Delevoye L, Gauvin RM, Scott SL, Taoufik M. A Strong Support Effect in Selective Propane Dehydrogenation Catalyzed by Ga(i-Bu)3 Grafted onto γ-Alumina and Silica. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00936] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai C. Szeto
- C2P2 (CNRS-UMR 5265), Université Lyon 1, ESCPE Lyon, 43 Boulevard du 11 Novembre 1918, 69626 Villeurbanne Cedex, France
| | - Zachary R. Jones
- Department of Chemistry and Biochemistry, University of California, Santa Barbara 93106-9510 United States
| | - Nicolas Merle
- Université
Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR
8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - César Rios
- C2P2 (CNRS-UMR 5265), Université Lyon 1, ESCPE Lyon, 43 Boulevard du 11 Novembre 1918, 69626 Villeurbanne Cedex, France
| | - Alessandro Gallo
- Department of Chemical Engineering, University of California, Santa Barbara 93106-5080 United States
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Frederic Le Quemener
- C2P2 (CNRS-UMR 5265), Université Lyon 1, ESCPE Lyon, 43 Boulevard du 11 Novembre 1918, 69626 Villeurbanne Cedex, France
| | - Laurent Delevoye
- Université
Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR
8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Régis M. Gauvin
- Université
Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR
8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Susannah L. Scott
- Department of Chemistry and Biochemistry, University of California, Santa Barbara 93106-9510 United States
- Department of Chemical Engineering, University of California, Santa Barbara 93106-5080 United States
| | - Mostafa Taoufik
- C2P2 (CNRS-UMR 5265), Université Lyon 1, ESCPE Lyon, 43 Boulevard du 11 Novembre 1918, 69626 Villeurbanne Cedex, France
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25
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Copéret C, Allouche F, Chan KW, Conley MP, Delley MF, Fedorov A, Moroz IB, Mougel V, Pucino M, Searles K, Yamamoto K, Zhizhko PA. Bridging the Gap between Industrial and Well‐Defined Supported Catalysts. Angew Chem Int Ed Engl 2018; 57:6398-6440. [DOI: 10.1002/anie.201702387] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Florian Allouche
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Ka Wing Chan
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Matthew P. Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- Current address: Department of ChemistryUniversity of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Murielle F. Delley
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Ilia B. Moroz
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- Current address: Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de FranceUniversité Pierre et Marie Curie 11 Place Marcelin Berthelot 75005 Paris France
| | - Margherita Pucino
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Keith Searles
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Keishi Yamamoto
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Pavel A. Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
- A. N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilov street 28 119991 Moscow Russia
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26
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Kaphan DM, Klet RC, Perras FA, Pruski M, Yang C, Kropf AJ, Delferro M. Surface Organometallic Chemistry of Supported Iridium(III) as a Probe for Organotransition Metal–Support Interactions in C–H Activation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00855] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Rachel C. Klet
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | | | - Marek Pruski
- U.S. DOE Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Ce Yang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - A. Jeremy Kropf
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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27
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Korzyński MD, Consoli DF, Zhang S, Román-Leshkov Y, Dincă M. Activation of Methyltrioxorhenium for Olefin Metathesis in a Zirconium-Based Metal–Organic Framework. J Am Chem Soc 2018; 140:6956-6960. [DOI: 10.1021/jacs.8b02837] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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28
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Zhang J, Motta A, Gao Y, Stalzer MM, Delferro M, Liu B, Lohr TL, Marks TJ. Cationic Pyridylamido Adsorbate on Brønsted Acidic Sulfated Zirconia: A Molecular Supported Organohafnium Catalyst for Olefin Homo- and Co-Polymerization. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00611] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jialong Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alessandro Motta
- Dipartimento di Scienze Chimiche, Università di Roma “La Sapienza” and INSTM, UdR Roma, I-00185 Roma, Italy
| | - Yanshan Gao
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Madelyn Marie Stalzer
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Massimiliano Delferro
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Boping Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Tracy L. Lohr
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Tobin J. Marks
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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29
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Copéret C, Allouche F, Chan KW, Conley MP, Delley MF, Fedorov A, Moroz IB, Mougel V, Pucino M, Searles K, Yamamoto K, Zhizhko PA. Eine Brücke zwischen industriellen und wohldefinierten Trägerkatalysatoren. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201702387] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Christophe Copéret
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Florian Allouche
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Ka Wing Chan
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Matthew P. Conley
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- Department of ChemistryUniversity of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Murielle F. Delley
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Alexey Fedorov
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Ilia B. Moroz
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Victor Mougel
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de FranceUniversité Pierre et Marie Curie 11 Place Marcelin Berthelot 75005 Paris Frankreich
| | - Margherita Pucino
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Keith Searles
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Keishi Yamamoto
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
| | - Pavel A. Zhizhko
- Departement Chemie und Angewandte Biowissenschaften, ETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Schweiz
- A. N. Nesmeyanow-Institut für Elementorganische VerbindungenRussische Akademie der Wissenschaften Vavilov str. 28 119991 Moskau Russland
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30
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Allouche F, Chan KW, Fedorov A, Andersen RA, Copéret C. Silica-Supported Pentamethylcyclopentadienyl Ytterbium(II) and Samarium(II) Sites: Ultrahigh Molecular Weight Polyethylene without Co-Catalyst. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Florian Allouche
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Ka Wing Chan
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Richard A. Andersen
- Department of Chemistry; University of California; Berkeley CA 94720-1460 USA
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
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31
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Allouche F, Chan KW, Fedorov A, Andersen RA, Copéret C. Silica-Supported Pentamethylcyclopentadienyl Ytterbium(II) and Samarium(II) Sites: Ultrahigh Molecular Weight Polyethylene without Co-Catalyst. Angew Chem Int Ed Engl 2018; 57:3431-3434. [DOI: 10.1002/anie.201800542] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Florian Allouche
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Ka Wing Chan
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Richard A. Andersen
- Department of Chemistry; University of California; Berkeley CA 94720-1460 USA
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
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32
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Chen P, Zhang L, Xue ZL, Wu YD, Zhang X. Density Functional Theory Study of the Reaction between d 0 Tungsten Alkylidyne Complexes and H 2O: Addition versus Hydrolysis. Inorg Chem 2017; 56:7111-7119. [PMID: 28581727 DOI: 10.1021/acs.inorgchem.7b00713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The reactions of early-transition-metal complexes with H2O have been investigated. An understanding of these elementary steps promotes the design of precursors for the preparation of metal oxide materials or supported heterogeneous catalysts. Density functional theory (DFT) calculations have been conducted to investigate two elementary steps of the reactions between tungsten alkylidyne complexes and H2O, i.e., the addition of H2O to the W≡C bond and ligand hydrolysis. Four tungsten alkylidyne complexes, W(≡CSiMe3)(CH2SiMe3)3 (A-1), W(≡CSiMe3)(CH2tBu)3 (B-1), W(≡CtBu)(CH2tBu)3 (C-1), and W(≡CtBu)(OtBu)3 (D-1), have been compared. The DFT studies provide an energy profile of the two competing pathways. An additional H2O molecule can serve as a proton shuttle, accelerating the H2O addition reaction. The effect of atoms at the α and β positions has also been examined. Because the lone-pair electrons of an O atom at the α position can interact with the orbital of the proton, the barrier of the ligand-hydrolysis reaction for D-1 is dramatically reduced. Both the electronic and steric effects of the silyl group at the β position lower the barriers of both the H2O addition and ligand-hydrolysis reactions. These new mechanistic findings may lead to the further development of metal complex precursors.
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Affiliation(s)
- Ping Chen
- Lab of Computational Chemistry and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen 518055, China
| | - Linxing Zhang
- Lab of Computational Chemistry and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen 518055, China
| | - Zi-Ling Xue
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen 518055, China.,College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen 518055, China
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33
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Fako E, Łodziana Z, López N. Comparative single atom heterogeneous catalysts (SAHCs) on different platforms: a theoretical approach. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01136a] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature of SAHC interactions with the matrix is crucial as it controls the electronic structure of the atom, its charge, the coordination pattern and the overall catalytic ensemble. We have checked all these aspects by studying the same single atom in oxides, metals and carbon nitride.
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Affiliation(s)
- Edvin Fako
- Institute of Chemical Research of Catalonia
- ICIQ
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
| | - Zbigniew Łodziana
- The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ-PAN)
- 31-342 Krakow
- Poland
| | - Núria López
- Institute of Chemical Research of Catalonia
- ICIQ
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
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34
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Copéret C, Estes DP, Larmier K, Searles K. Isolated Surface Hydrides: Formation, Structure, and Reactivity. Chem Rev 2016; 116:8463-505. [DOI: 10.1021/acs.chemrev.6b00082] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P. Estes
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Kim Larmier
- 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
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35
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Copéret C, Comas-Vives A, Conley MP, Estes DP, Fedorov A, Mougel V, Nagae H, Núñez-Zarur F, Zhizhko PA. Surface Organometallic and Coordination Chemistry toward Single-Site Heterogeneous Catalysts: Strategies, Methods, Structures, and Activities. Chem Rev 2016; 116:323-421. [PMID: 26741024 DOI: 10.1021/acs.chemrev.5b00373] [Citation(s) in RCA: 490] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P Estes
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Haruki Nagae
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,Department of Chemistry, Graduate School of Engineering Science, Osaka University, CREST , Toyonaka, Osaka 560-8531, Japan
| | - Francisco Núñez-Zarur
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Pavel A Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov str. 28, 119991 Moscow, Russia
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36
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Maity N, Barman S, Callens E, Samantaray MK, Abou-Hamad E, Minenkov Y, D'Elia V, Hoffman AS, Widdifield CM, Cavallo L, Gates BC, Basset JM. Controlling the hydrogenolysis of silica-supported tungsten pentamethyl leads to a class of highly electron deficient partially alkylated metal hydrides. Chem Sci 2015; 7:1558-1568. [PMID: 29899899 PMCID: PMC5964938 DOI: 10.1039/c5sc03490f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 11/25/2015] [Indexed: 01/28/2023] Open
Abstract
Accessing highly electron deficient partially alkylated tungsten hydrides on silica via controlled hydrogenolysis of surface organometallic complex (
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
Si–O–)W(Me)5.
The well-defined single-site silica-supported tungsten complex [(
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
Si–O–)W(Me)5], 1, is an excellent precatalyst for alkane metathesis. The unique structure of 1 allows the synthesis of unprecedented tungsten hydrido methyl surface complexes via a controlled hydrogenolysis. Specifically, in the presence of molecular hydrogen, 1 is quickly transformed at –78 °C into a partially alkylated tungsten hydride, 4, as characterized by 1H solid-state NMR and IR spectroscopies. Species 4, upon warming to 150 °C, displays the highest catalytic activity for propane metathesis yet reported. DFT calculations using model systems support the formation of [(
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
Si–O–)WH3(Me)2], as the predominant species at –78 °C following several elementary steps of hydrogen addition (by σ-bond metathesis or α-hydrogen transfer). Rearrangement of 4 occuring between –78 °C and room temperature leads to the formation of an unique methylidene tungsten hydride [(
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
Si–O–)WH3(
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
CH2)], as determined by solid-state 1H and 13C NMR spectroscopies and supported by DFT. Thus for the first time, a coordination sphere that incorporates both carbene and hydride functionalities has been observed.
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Affiliation(s)
- Niladri Maity
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Samir Barman
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Emmanuel Callens
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Manoja K Samantaray
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Edy Abou-Hamad
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Yury Minenkov
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Valerio D'Elia
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ; .,Department of Materials Science and Engineering , Vidyasirimedhi Institute of Science and Technology , 21210 , Rayong , Thailand
| | - Adam S Hoffman
- Department of Chemical Engineering and Materials Science , University of California at Davis , Davis , California 95616 , USA .
| | - Cory M Widdifield
- Department of Chemistry , Durham University , Stockton Road , Durham DH1 3LE , UK
| | - Luigi Cavallo
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
| | - Bruce C Gates
- Department of Chemical Engineering and Materials Science , University of California at Davis , Davis , California 95616 , USA .
| | - Jean-Marie Basset
- King Abdullah University of Science & Technology , KAUST Catalysis Center (KCC) , 23955-6900 Thuwal , Saudi Arabia . ;
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37
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Zaera F. New advances in the use of infrared absorption spectroscopy for the characterization of heterogeneous catalytic reactions. Chem Soc Rev 2015; 43:7624-63. [PMID: 24424375 DOI: 10.1039/c3cs60374a] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Infrared absorption spectroscopy has proven to be one of the most powerful spectroscopic techniques available for the characterization of catalytic systems. Although the history of IR absorption spectroscopy in catalysis is long, the technique continues to provide key fundamental information about a variety of catalysts and catalytic reactions, and to also offer novel options for the acquisition of new information on both reaction mechanisms and the nature of the solids used as catalysts. In this review, an overview is provided of the main contributions that have been derived from IR absorption spectroscopy studies of catalytic systems, and a discussion is included on new trends and new potential directions of research involving IR in catalysis. We start by briefly describing the power of Fourier-transform IR (FTIR) instruments and the main experimental IR setups available, namely, transmission (TIR), diffuse reflectance (DRIFTS), attenuated total reflection (ATR-IR), and reflection-absorption (RAIRS), for advancing research in catalysis. We then discuss the different environments under which IR characterization of catalysts is carried out, including in situ and operando studies of typical catalytic processes in gas-phase, research with model catalysts in ultrahigh vacuum (UHV) and so-called high-pressure cell instruments, and work involving liquid/solid interfaces. A presentation of the type of information extracted from IR data follows in terms of the identification of adsorbed intermediates, the characterization of the surfaces of the catalysts themselves, the quantitation of IR intensities to extract surface coverages, and the use of probe molecules to identify and titrate specific catalytic sites. Finally, the different options for carrying out kinetic studies with temporal resolution such as rapid-scan FTIR, step-scan FTIR, and the use of tunable lasers or synchrotron sources, and to obtain spatially resolved spectra, by sample rastering or by 2D imaging, are introduced.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
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38
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Conley MP, Delley MF, Núñez-Zarur F, Comas-Vives A, Copéret C. Heterolytic Activation of C–H Bonds on CrIII–O Surface Sites Is a Key Step in Catalytic Polymerization of Ethylene and Dehydrogenation of Propane. Inorg Chem 2015; 54:5065-78. [DOI: 10.1021/ic502696n] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Matthew P. Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1−5, CH-8093 Zürich, Switzerland
| | - Murielle F. Delley
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1−5, CH-8093 Zürich, Switzerland
| | - Francisco Núñez-Zarur
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1−5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1−5, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1−5, CH-8093 Zürich, Switzerland
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39
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Samantaray MK, Dey R, Abou-Hamad E, Hamieh A, Basset JM. Effect of Support on Metathesis ofn-Decane: Drastic Improvement in Alkane Metathesis with WMe5Linked to Silica-Alumina. Chemistry 2015; 21:6100-6. [DOI: 10.1002/chem.201406033] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Indexed: 11/08/2022]
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40
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Zhang G, Qin L, Wu Y, Xu Z, Guo X. Iron oxide nanoparticles immobilized to mesoporous NH2-SiO2 spheres by sulfonic acid functionalization as highly efficient catalysts. NANOSCALE 2015; 7:1102-1109. [PMID: 25482204 DOI: 10.1039/c4nr05884d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel SiO2 nanosphere was synthesized by the post-synthetic grafting of sulfonic acid groups on to anionic-surfactant-templated mesoporous NH2-silica (AMAS). This one-pot post-functionalization strategy allowed more metal ions to be homogeneously anchored into the channel of the meso-SiO2 nanosphere. After hydrothermal and calcination treatment, the in situ growth of α-Fe2O3 on sulfonic acid-functionalized mesoporous NH2-SiO2 (SA-AMAS) exhibited much higher activity in the visible-light assisted Fenton reaction at neutral pH than that for AMAS or meso-SiO2 nanospheres. By analysis, the grafted sulfonic acid group can not only enhance the acid strength of the catalyst, but can also bring more orbital-overlapping between the active sites (Fe(II) and Fe(III)) and the surface peroxide species, to facilitate the decomposition of H2O2 to hydroxyl radical. The present results provide opportunities for developing heterogeneous catalysts with high-performance in the field of green chemistry and environmental remediation.
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Affiliation(s)
- Guoliang Zhang
- Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, China.
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41
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Xu W, Yu B, Sun H, Yang J, Zhang Y, Wang Z, Chen X, Zhang G, Gao Z. The first montmorillonite-supported surface single-structure titanium complex: synthesis, characterization and catalytic activity in alkene epoxidation. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Bo Yu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Jindou Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Ying Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Zhenhua Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Xi Chen
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
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42
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Alphazan T, Bonduelle-Skrzypczak A, Legens C, Gay AS, Boudene Z, Girleanu M, Ersen O, Copéret C, Raybaud P. Highly Active Nonpromoted Hydrotreating Catalysts through the Controlled Growth of a Supported Hexagonal WS2 Phase. ACS Catal 2014. [DOI: 10.1021/cs501311m] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thibault Alphazan
- IFP Energies nouvelles, Rond-point
de l’échangeur de Solaize, 69360 Solaize, France
| | | | - Christèle Legens
- IFP Energies nouvelles, Rond-point
de l’échangeur de Solaize, 69360 Solaize, France
| | - Anne-Sophie Gay
- IFP Energies nouvelles, Rond-point
de l’échangeur de Solaize, 69360 Solaize, France
| | - Zoubeyr Boudene
- IFP Energies nouvelles, Rond-point
de l’échangeur de Solaize, 69360 Solaize, France
| | - Maria Girleanu
- IPCMS-UMR
7504, CNRS-Université de Strasbourg, 23 rue du Loess BP 43, 67034 Strasbourg cedex 2, France
| | - Ovidiu Ersen
- IPCMS-UMR
7504, CNRS-Université de Strasbourg, 23 rue du Loess BP 43, 67034 Strasbourg cedex 2, France
| | - Christophe Copéret
- Department
of chemistry and Applied Biosciences, ETH Zürich, Vladimir
Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Pascal Raybaud
- IFP Energies nouvelles, Rond-point
de l’échangeur de Solaize, 69360 Solaize, France
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43
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O’Keefe CA, Johnston KE, Sutter K, Autschbach J, Gauvin R, Trébosc J, Delevoye L, Popoff N, Taoufik M, Oudatchin K, Schurko RW. An Investigation of Chlorine Ligands in Transition-Metal Complexes via 35Cl Solid-State NMR and Density Functional Theory Calculations. Inorg Chem 2014; 53:9581-97. [DOI: 10.1021/ic501004u] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christopher A. O’Keefe
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Karen E. Johnston
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Kiplangat Sutter
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Régis Gauvin
- Université
Lille Nord de France, CNRS UMR8181, Unité de Catalyse et de
Chimie du Solide, UCCS USTL, F-59655 Villeneuve d’Ascq, France
| | - Julien Trébosc
- Université
Lille Nord de France, CNRS UMR8181, Unité de Catalyse et de
Chimie du Solide, UCCS USTL, F-59655 Villeneuve d’Ascq, France
| | - Laurent Delevoye
- Université
Lille Nord de France, CNRS UMR8181, Unité de Catalyse et de
Chimie du Solide, UCCS USTL, F-59655 Villeneuve d’Ascq, France
| | - Nicolas Popoff
- Laboratoire
de Chimie, Catalyse, Polymères et Procédés (UMR-C2P2-5265
CNRS/ESCPE-Lyon/UCBL) ESCPE Lyon, F-308-43, Boulevard du 11 Novembre 1918, F-69616 Villeurbanne Cedex, France
| | - Mostafa Taoufik
- Laboratoire
de Chimie, Catalyse, Polymères et Procédés (UMR-C2P2-5265
CNRS/ESCPE-Lyon/UCBL) ESCPE Lyon, F-308-43, Boulevard du 11 Novembre 1918, F-69616 Villeurbanne Cedex, France
| | - Konstantin Oudatchin
- Steacie Institute for
Molecular Sciences, National Research Council, 100 Sussex Drive, Ottawa, Ontario K1A OR6, Canada
| | - Robert W. Schurko
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
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44
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Tregubov AA, Linser R, Vuong KQ, Rawal A, Gehman JD, Messerle BA. Solid-state NMR structure characterization of a 13CO-Labeled Ir(I) complex with a P,N-donor ligand including ultrafast MAS methods. Inorg Chem 2014; 53:7146-53. [PMID: 24992359 DOI: 10.1021/ic500128y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The structural characterization of a (13)CO-labeled Ir(I) complex bearing an P,N-donor ligand (1-[2-(diphenylphosphino)ethyl]pyrazole), [Ir(PyP)((13)CO)Cl] is demonstrated using a series of tailored solid-state NMR techniques based on ultrafast (60 kHz) Magic Angle Spinning (MAS), which facilitates correlations with narrow proton line-widths. Our 1D (1)H MAS and 2D (13)C and (31)P CP-MAS NMR spectra provided structural information similar to that obtained using NMR spectroscopy in solution. We employed high-resolution 2D solid-state correlation spectroscopy ((1)H-(13)C HETCOR, (1)H-(31)P correlation) to characterize the networks of dipolar couplings between protons and carbon/phosphorus. (1)H-(1)H SQ-SQ correlation spectra showed the dipolar contacts between all protons in a similar fashion to its solution counterpart, NOESY. The use of the (1)H single quantum/double quantum experiments made it possible to observe the dipolar-coupling contacts between immediately adjacent protons. Additionally, internuclear (13)CO-(31)P distance measurements were performed using REDOR. The combination of all of these techniques made it possible to obtain comprehensive structural information on the molecule [Ir(PyP)((13)CO)Cl] in the solid state, which is in excellent agreement with the single crystal X-ray structure of the complex, and demonstrates the enormous value of ultrafast MAS NMR techniques for a broad range of future applications.
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Affiliation(s)
- Andrey A Tregubov
- School of Chemistry, University of New South Wales , Sydney, 2052, New South Wales, Australia
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45
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Conley MP, Copéret C. State of the Art and Perspectives in the “Molecular Approach” Towards Well-Defined Heterogeneous Catalysts. Top Catal 2014. [DOI: 10.1007/s11244-014-0245-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Bonhomme C, Gervais C, Laurencin D. Recent NMR developments applied to organic-inorganic materials. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2014; 77:1-48. [PMID: 24411829 DOI: 10.1016/j.pnmrs.2013.10.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 10/17/2013] [Indexed: 06/03/2023]
Abstract
In this contribution, the latest developments in solid state NMR are presented in the field of organic-inorganic (O/I) materials (or hybrid materials). Such materials involve mineral and organic (including polymeric and biological) components, and can exhibit complex O/I interfaces. Hybrids are currently a major topic of research in nanoscience, and solid state NMR is obviously a pertinent spectroscopic tool of investigation. Its versatility allows the detailed description of the structure and texture of such complex materials. The article is divided in two main parts: in the first one, recent NMR methodological/instrumental developments are presented in connection with hybrid materials. In the second part, an exhaustive overview of the major classes of O/I materials and their NMR characterization is presented.
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Affiliation(s)
- Christian Bonhomme
- Laboratoire de Chimie de la Matière Condensée de Paris, UMR CNRS 7574, Université Pierre et Marie Curie, Paris 06, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France.
| | - Christel Gervais
- Laboratoire de Chimie de la Matière Condensée de Paris, UMR CNRS 7574, Université Pierre et Marie Curie, Paris 06, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
| | - Danielle Laurencin
- Institut Charles Gerhardt de Montpellier, UMR5253, CNRS UM2 UM1 ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
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Conley MP, Delley MF, Siddiqi G, Lapadula G, Norsic S, Monteil V, Safonova OV, Copéret C. Polymerization of Ethylene by Silica-Supported Dinuclear CrIIISites through an Initiation Step Involving CH Bond Activation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308983] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Conley MP, Delley MF, Siddiqi G, Lapadula G, Norsic S, Monteil V, Safonova OV, Copéret C. Polymerization of Ethylene by Silica-Supported Dinuclear CrIIISites through an Initiation Step Involving CH Bond Activation. Angew Chem Int Ed Engl 2014; 53:1872-6. [DOI: 10.1002/anie.201308983] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Indexed: 11/08/2022]
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Popoff N, Macqueron B, Sayhoun W, Espinas J, Pelletier J, Boyron O, Boisson C, Merle N, Szeto KC, Gauvin RM, De Mallmann A, Taoufik M. Well-Defined Silica-Supported Zirconium-Benzyl Cationic Species: Improved Heterogenization of Single-Site Polymerization Catalysts. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301317] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Chen Y, Zheng B, Abou-Hamad E, Hamieh A, Hamzaoui B, Huang KW, Basset JM. The use of a well-defined surface organometallic complex as a probe molecule: [(SiO)TaVCl2Me2] shows different isolated silanol sites on the silica surface. Chem Commun (Camb) 2014; 50:11721-3. [DOI: 10.1039/c4cc04277h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TaVCl2Me3 reacts with silica(700) and produces two different surface organometallic species, the heterogeneity of the silica surface was disclosed and studied with experimental and theoretical approach.
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Affiliation(s)
- Yin Chen
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Bin Zheng
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Edy Abou-Hamad
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Ali Hamieh
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Bilel Hamzaoui
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Kuo-wei Huang
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
| | - Jean-marie Basset
- King Abdullah University of Science and Technology (KAUST)
- KAUST Catalysis Center
- Thuwal 23955-6900, Saudi Arabia
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