1
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Chang ASM, Kascoutas MA, Valentine QP, How KI, Thomas RM, Cook AK. Alkene Isomerization Using a Heterogeneous Nickel-Hydride Catalyst. J Am Chem Soc 2024; 146:15596-15608. [PMID: 38771258 DOI: 10.1021/jacs.4c04719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Transition metal-catalyzed alkene isomerization is an enabling technology used to install an alkene distal to its original site. Due to their well-defined structure, homogeneous catalysts can be fine-tuned to optimize reactivity, stereoselectivity, and positional selectivity, but they often suffer from instability and nonrecyclability. Heterogeneous catalysts are generally highly robust but continue to lack active-site specificity and are challenging to rationally improve through structural modification. Known single-site heterogeneous catalysts for alkene isomerization utilize precious metals and bespoke, expensive, and synthetically intense supports. Additionally, they generally have mediocre reactivity, inspiring us to develop a heterogeneous catalyst with an active site made from readily available compounds made of Earth-abundant elements. Previous work demonstrated that a very active homogeneous catalyst is formed upon protonation of Ni[P(OEt)3]4 by H2SO4, generating a [Ni-H]+ active site. This catalyst is incredibly active, but also decomposes readily, which severely limits its utility. Herein we show that by using a solid acid (sulfated zirconia, SZO300), not only is this decomposition prevented, but high activity is maintained, improved selectivity is achieved, and a broader scope of functional groups is tolerated. Preliminary mechanistic experiments suggest that the catalytic reaction likely goes through an intermolecular, two-electron pathway. A detailed kinetic study comparing the state-of-the-art Ni and Pd isomerization catalysts reveals that the highest activity and selectivity is seen with the Ni/SZO300 system. The reactivity of Ni/SZO300, is not limited to alkene isomerization; it is also a competent catalyst for hydroalkenylation, hydroboration, and hydrosilylation, demonstrating the broad application of this heterogeneous catalyst.
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Affiliation(s)
- Alison Sy-Min Chang
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Melanie A Kascoutas
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Quinn P Valentine
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Kiera I How
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Rachel M Thomas
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Amanda K Cook
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
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2
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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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3
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Rodriguez J, Boudjelel M, Schrock RR, Conley MP. A Tungsten Oxo Alkylidene Supported on Sulfated Zirconium Oxide for Olefin Metathesis. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Jessica Rodriguez
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Maxime Boudjelel
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Richard R. Schrock
- 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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4
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Optical and Thermal Investigations of Eutectic Metallomesogen Mixtures Based on Salicylaldiaminates Metal Complexes with a Large Nematic Stability Range. INORGANICS 2023. [DOI: 10.3390/inorganics11010032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The mesomorphic behavior and the miscibility properties of binary mixtures of a new series of Schiff base metallomesogen (MOM) are evaluated by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). Nuclear magnetic resonance (NMR), elemental analysis (CHNX), Fourier−transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) were used to certify the molecular structure of the compounds. The results revealed that the studied mixtures are completely miscible throughout the composition field and exhibit a nematic phase which covered the whole composition range. In the mixtures, the stability of the nematic phase varies continuously, and it is possible to highlight the presence of a eutectic composition with a wide mesogenic stability range.
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5
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Surface Organometallic Chemistry for Single-site Catalysis and Single-atom Catalysis. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2211-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Syed ZH, Mian MR, Patel R, Xie H, Pengmei Z, Chen Z, Son FA, Goetjen TA, Chapovetsky A, Fahy KM, Sha F, Wang X, Alayoglu S, Kaphan DM, Chapman KW, Neurock M, Gagliardi L, Delferro M, Farha OK. Sulfated Zirconium Metal–Organic Frameworks as Well-Defined Supports for Enhancing Organometallic Catalysis. J Am Chem Soc 2022; 144:16883-16897. [DOI: 10.1021/jacs.2c05290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zoha H. Syed
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Mohammad Rasel Mian
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Roshan Patel
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Haomiao Xie
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Zihan Pengmei
- Department of Chemistry, Chicago Center for Theoretical Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Zhihengyu Chen
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Florencia A. Son
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Timothy A. Goetjen
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- 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
| | - Kira M. Fahy
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Fanrui Sha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Xingjie Wang
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Selim Alayoglu
- Center for Catalysis and Surface Science, Northwestern University, Evanston, Illinois 60208, United States
| | - David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Karena W. Chapman
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Matthew Neurock
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Laura Gagliardi
- Department of Chemistry, Chicago Center for Theoretical Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Omar K. Farha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
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7
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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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8
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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: 8] [Impact Index Per Article: 2.7] [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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9
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Sheludko B, Castro CF, Goldman AS, Celik FE. Poison or Promoter? Investigating the Dual-Role of Carbon Monoxide in Pincer-Iridium-Based Alkane Dehydrogenation Systems via Operando Diffuse Reflectance Infrared Fourier Transform Spectroscopy. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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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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11
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Liu X, Liu R, Qiu J, Cheng X, Li G. Chemical‐Reductant‐Free Electrochemical Deuteration Reaction using Deuterium Oxide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005765] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xu Liu
- Institute of Chemistry and Biomedical Sciences Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering National Demonstration Center for, Experimental Chemistry Education Nanjing University Nanjing 210023 China
| | - Ruoyu Liu
- Institute of Chemistry and Biomedical Sciences Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering National Demonstration Center for, Experimental Chemistry Education Nanjing University Nanjing 210023 China
| | - Jiaxing Qiu
- Institute of Chemistry and Biomedical Sciences Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering National Demonstration Center for, Experimental Chemistry Education Nanjing University Nanjing 210023 China
| | - Xu Cheng
- Institute of Chemistry and Biomedical Sciences Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering National Demonstration Center for, Experimental Chemistry Education Nanjing University Nanjing 210023 China
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of Technology Hangzhou 310032 China
| | - Guigen Li
- Institute of Chemistry and Biomedical Sciences Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering National Demonstration Center for, Experimental Chemistry Education Nanjing University Nanjing 210023 China
- Department of Chemistry and Biochemistry Texas Tech University Lubbock TX USA
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12
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Liu X, Liu R, Qiu J, Cheng X, Li G. Chemical-Reductant-Free Electrochemical Deuteration Reaction using Deuterium Oxide. Angew Chem Int Ed Engl 2020; 59:13962-13967. [PMID: 32394494 DOI: 10.1002/anie.202005765] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Indexed: 12/20/2022]
Abstract
We report a method for the electrochemical deuteration of α,β-unsaturated carbonyl compounds under catalyst- and external-reductant-free conditions, with deuteration rates as high as 99 % and yields up to 91 % in 2 h. The use of graphite felt for both the cathode and the anode was key to ensuring chemoselectivity and high deuterium incorporation under neutral conditions without the need for an external reductant. This method has a number of advantages over previously reported deuteration reactions that use stoichiometric metallic reductants. Mechanistic experiments showed that O2 evolution at the anode not only eliminates the need for an external reductant but also regulates the pH of the reaction mixture, keeping it approximately neutral.
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Affiliation(s)
- Xu Liu
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for, Experimental Chemistry Education, Nanjing University, Nanjing, 210023, China
| | - Ruoyu Liu
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for, Experimental Chemistry Education, Nanjing University, Nanjing, 210023, China
| | - Jiaxing Qiu
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for, Experimental Chemistry Education, Nanjing University, Nanjing, 210023, China
| | - Xu Cheng
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for, Experimental Chemistry Education, Nanjing University, Nanjing, 210023, China.,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Guigen Li
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for, Experimental Chemistry Education, Nanjing University, Nanjing, 210023, China.,Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
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13
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Bunting RJ, Thompson J, Hu P. The mechanism and ligand effects of single atom rhodium supported on ZSM-5 for the selective oxidation of methane to methanol. Phys Chem Chem Phys 2020; 22:11686-11694. [PMID: 32406892 DOI: 10.1039/d0cp01284j] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism for the partial oxidation of methane to methanol on single atom rhodium supported on ZSM-5 is investigated by DFT. The most favoured mechanism for methane activation is shown to be via oxidative addition at an undercoordinated rhodium metal centre and not through a typical metal oxo intermediate. The formation of a C-OH bond, and not methane activation, is found to be the rate determining step. CO coordinated to the rhodium centre is observed to strongly promote this bond formation. Water is required in the system to help prevent catalyst poisoning by CO, which greatly hinders the methane activation step, and to protonate an intermediate RhOOH species. These results suggest that more focus is required on methyl-oxygen bond formation and that exclusive consideration of methane activation will not completely explain some methane partial oxidation systems.
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Affiliation(s)
- Rhys J Bunting
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.
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14
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Culver DB, Huynh W, Tafazolian H, Conley MP. Solid-State 45Sc NMR Studies of Cp* 2Sc–OR (R = CMe 2CF 3, CMe(CF 3) 2, C(CF 3) 3, SiPh 3) and Relationship to the Structure of Cp* 2Sc-Sites Supported on Partially Dehydroxylated Silica. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00840] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Damien B. Culver
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Winn Huynh
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Hosein Tafazolian
- 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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15
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Preparation and regeneration of supported single-Ir-site catalysts by nanoparticle dispersion via CO and nascent I radicals. J Catal 2020. [DOI: 10.1016/j.jcat.2019.12.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Huynh W, Conley MP. Origin of the 29Si NMR chemical shift in R3Si–X and relationship to the formation of silylium (R3Si+) ions. Dalton Trans 2020; 49:16453-16463. [DOI: 10.1039/d0dt02099k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The origin in deshielding of 29Si NMR chemical shifts in R3Si–X, where X = H, OMe, Cl, OTf, [CH6B11X6], toluene, and OX (OX = surface oxygen), as well as iPr3Si+ and Mes3Si+ were studied using DFT methods.
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Affiliation(s)
- Winn Huynh
- Department of Chemistry
- University of California
- Riverside
- USA
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17
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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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18
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Cera G, Della Ca' N, Maestri G. Palladium(0)/benzoic acid catalysis merges sequences with D 2O-promoted labelling of C-H bonds. Chem Sci 2019; 10:10297-10304. [PMID: 32110316 PMCID: PMC6979390 DOI: 10.1039/c9sc03682b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/19/2019] [Indexed: 12/26/2022] Open
Abstract
The combination of a Pd(0) complex with benzoic acid in the presence of D2O enables the synthesis of valuable families of highly deuterated organics through elaborate sequential reactions. The catalytic system can convert 2-butyne fragments into the corresponding d-dienamides, which can then readily deliver labeled polycyclic quinone motifs. Propargylated tryptamines lead to formation of highly enriched tetrahydrocarbolines through the C-H activation of their unprotected indole ring. Mechanistic studies reveal the ordered series of events that regulate the outcome of these complex reactions, which include multiple, sequential and selective H/D scrambling from the cheapest and safest deuterium source.
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Affiliation(s)
- Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale , Università di Parma , Parco Area delle Scienze 17/A , 43124 Parma , Italy .
| | - Nicola Della Ca'
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale , Università di Parma , Parco Area delle Scienze 17/A , 43124 Parma , Italy .
| | - Giovanni Maestri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale , Università di Parma , Parco Area delle Scienze 17/A , 43124 Parma , Italy .
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19
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Xiao J, Li Q, Shen R, Shimada S, Han L. Phosphonium Phenolate Zwitterion
vs
Phosphonium Ylide: Synthesis, Characterization and Reactivity Study of a Trimethylphosphonium Phenolate Zwitterion. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901303] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jing Xiao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan 411201 People's Republic of China
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Ibaraki 305-8565 Japan
| | - Qiang Li
- College of Chemistry and Chemical EngineeringLiaocheng University, Liaocheng Shandong 252059 People's Republic of China
| | - Ruwei Shen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical EngineeringNanjing Tech University Nanjing 211816 People's Republic of China
| | - Shigeru Shimada
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Ibaraki 305-8565 Japan
| | - Li‐Biao Han
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Ibaraki 305-8565 Japan
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20
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Lassalle S, Jabbour R, Schiltz P, Berruyer P, Todorova TK, Veyre L, Gajan D, Lesage A, Thieuleux C, Camp C. Metal–Metal Synergy in Well-Defined Surface Tantalum–Iridium Heterobimetallic Catalysts for H/D Exchange Reactions. J Am Chem Soc 2019; 141:19321-19335. [DOI: 10.1021/jacs.9b08311] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sébastien Lassalle
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Institut de Chimie de Lyon, CNRS, UCB Lyon 1, Université de Lyon, ESCPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France
| | - Ribal Jabbour
- Centre de RMN à Hauts Champs de Lyon CRMN, FRE 2034, CNRS, Université de Lyon, ENS Lyon, UCB Lyon 1, F-69100 Villeurbanne, France
| | - Pauline Schiltz
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Institut de Chimie de Lyon, CNRS, UCB Lyon 1, Université de Lyon, ESCPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France
| | - Pierrick Berruyer
- Centre de RMN à Hauts Champs de Lyon CRMN, FRE 2034, CNRS, Université de Lyon, ENS Lyon, UCB Lyon 1, F-69100 Villeurbanne, France
| | - Tanya K. Todorova
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, F-75231 Paris Cedex 05, France
| | - Laurent Veyre
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Institut de Chimie de Lyon, CNRS, UCB Lyon 1, Université de Lyon, ESCPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France
| | - David Gajan
- Centre de RMN à Hauts Champs de Lyon CRMN, FRE 2034, CNRS, Université de Lyon, ENS Lyon, UCB Lyon 1, F-69100 Villeurbanne, France
| | - Anne Lesage
- Centre de RMN à Hauts Champs de Lyon CRMN, FRE 2034, CNRS, Université de Lyon, ENS Lyon, UCB Lyon 1, F-69100 Villeurbanne, France
| | - Chloé Thieuleux
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Institut de Chimie de Lyon, CNRS, UCB Lyon 1, Université de Lyon, ESCPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France
| | - Clément Camp
- Laboratory of Chemistry, Catalysis, Polymers and Processes, C2P2 UMR 5265, Institut de Chimie de Lyon, CNRS, UCB Lyon 1, Université de Lyon, ESCPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France
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Otake KI, Ye J, Mandal M, Islamoglu T, Buru CT, Hupp JT, Delferro M, Truhlar DG, Cramer CJ, Farha OK. Enhanced Activity of Heterogeneous Pd(II) Catalysts on Acid-Functionalized Metal–Organic Frameworks. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01043] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ken-ichi Otake
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jingyun Ye
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Mukunda Mandal
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Timur Islamoglu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Cassandra T. Buru
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Joseph T. Hupp
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Massimiliano Delferro
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4803, United States
| | - Donald G. Truhlar
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Christopher J. Cramer
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Omar K. Farha
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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22
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Syed ZH, Kaphan DM, Perras FA, Pruski M, Ferrandon MS, Wegener EC, Celik G, Wen J, Liu C, Dogan F, Goldberg KI, Delferro M. Electrophilic Organoiridium(III) Pincer Complexes on Sulfated Zirconia for Hydrocarbon Activation and Functionalization. J Am Chem Soc 2019; 141:6325-6337. [DOI: 10.1021/jacs.9b00896] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zoha H. Syed
- 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
| | | | - Marek Pruski
- U.S. DOE Ames 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
| | - Evan C. Wegener
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Gokhan Celik
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Cong Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Fulya Dogan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Karen I. Goldberg
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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23
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Rodriguez J, Culver DB, Conley MP. Generation of Phosphonium Sites on Sulfated Zirconium Oxide: Relationship to Brønsted Acid Strength of Surface −OH Sites. J Am Chem Soc 2019; 141:1484-1488. [DOI: 10.1021/jacs.8b13204] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jessica Rodriguez
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Damien B. Culver
- 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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24
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Culver DB, Conley MP. Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Damien B. Culver
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
| | - Matthew P. Conley
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
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25
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Culver DB, Conley MP. Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia. Angew Chem Int Ed Engl 2018; 57:14902-14905. [PMID: 30265766 DOI: 10.1002/anie.201809199] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Damien B. Culver
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
| | - Matthew P. Conley
- Chemistry University of California, Riverside 501 Big Springs Rd. Riverside CA 92521 USA
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