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Reese DL, Steele RP. Molecular Motion in the Interconverting σ-H 2, Di-, and Tri-hydride Regimes: Mo(PH3)5H2. J Phys Chem A 2022; 126:6834-6848. [PMID: 36154020 DOI: 10.1021/acs.jpca.2c03397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The transition-metal complex Mo(PH3)5H2 is known to exist in three possible isomeric forms, including a nonclassical, σ-bound dihydrogen complex and two classical dihydride isomers. As such, it has served as a model complex for the energies of conversion between these limiting structural regimes. In the present study, ab initio molecular dynamics computer simulations, combined with enhanced sampling techniques, were utilized to directly assess the degree of motion and isomerization of the dihydrogen/dihydride moieties in this complex. Ligand rotations (for both the H2 unit and the phosphine units) were found to be dominant in the low-temperature (298 K) regime, and the classical thermodynamic distribution showed no probability of thermally accessing dihydride forms, although unrestrained molecular dynamics trajectories showed fleeting configurations outside of the σ-H2 configuration. Simulations at higher temperatures surprisingly revealed new tri-hydride isomers that are energetically competitive with the σ-H2 and cis-/trans-dihydride isomers. Low-energy pathways to hydrogen/hydride transfer and phosphine dissociation were readily accessible, which considerably expands the known isomeric flexibility of this complex.
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Affiliation(s)
- Diana L Reese
- Department of Chemistry and Biochemistry, Utah Tech University, 225 South University Avenue, St. George, Utah 84770, United States
| | - Ryan P Steele
- Department of Chemistry and Henry Eyring Center for Theoretical Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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2
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Quality or Quantity? How Structural Parameters Affect Catalytic Activity of Iron Oxides for CO Oxidation. Catalysts 2022. [DOI: 10.3390/catal12060675] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The replacement of noble metal catalysts by abundant iron as an active compound in CO oxidation is of ecologic and economic interest. However, improvement of their catalytic performance to the same level as state-of-the-art noble metal catalysts requires an in depth understanding of their working principle on an atomic level. As a contribution to this aim, a series of iron oxide catalysts with varying Fe loadings from 1 to 20 wt% immobilized on a γ-Al2O3 support is presented here, and a multidimensional structure–activity correlation is established. The CO oxidation activity is correlated to structural details obtained by various spectroscopic, diffraction, and microscopic methods, such as PXRD, PDF analysis, DRUVS, Mössbauer spectroscopy, STEM-EDX, and XAS. Low Fe loadings lead to less agglomerated but high percentual amounts of isolated, tetrahedrally coordinated iron oxide species, while the absolute amount of isolated species reaches its maximum at high Fe loadings. Consequently, the highest CO oxidation activity in terms of turnover frequencies can be correlated to small, finely dispersed iron oxide species with a large amount of tetrahedrally oxygen coordinated iron sites, while the overall amount of isolated iron oxide species correlates with a lower light-off temperature.
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3
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Vafaeezadeh M, Breuninger P, Lösch P, Wilhelm C, Ernst S, Antonyuk S, Thiel WR. Janus Interphase Organic‐Inorganic Hybrid Materials: Novel Water‐Friendly Heterogeneous Catalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201900147] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Majid Vafaeezadeh
- Fachbereich Chemie, Anorganische ChemieTechnische Universität Kaiserslautern Erwin-Schrödinger-Str. 54 67663 Kaiserslautern (Germany
| | - Paul Breuninger
- Fachbereich Maschinenbau und Verfahrenstechnik Mechanische VerfahrenstechnikTechnische Universität Kaiserslautern Gottlieb-Daimler-Str. 44 67663 Kaiserslautern Germany
| | - Philipp Lösch
- Fachbereich Maschinenbau und Verfahrenstechnik Mechanische VerfahrenstechnikTechnische Universität Kaiserslautern Gottlieb-Daimler-Str. 44 67663 Kaiserslautern Germany
| | - Christian Wilhelm
- Fachbereich Chemie, Technische ChemieTechnische Universität Kaiserslautern Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Stefan Ernst
- Fachbereich Chemie, Technische ChemieTechnische Universität Kaiserslautern Erwin-Schrödinger-Str. 54 67663 Kaiserslautern Germany
| | - Sergiy Antonyuk
- Fachbereich Maschinenbau und Verfahrenstechnik Mechanische VerfahrenstechnikTechnische Universität Kaiserslautern Gottlieb-Daimler-Str. 44 67663 Kaiserslautern Germany
| | - Werner R. Thiel
- Fachbereich Chemie, Anorganische ChemieTechnische Universität Kaiserslautern Erwin-Schrödinger-Str. 54 67663 Kaiserslautern (Germany
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4
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Prasad RRR, Dawson DM, Cox PA, Ashbrook SE, Wright PA, Clarke ML. A Bifunctional MOF Catalyst Containing Metal–Phosphine and Lewis Acidic Active Sites. Chemistry 2018; 24:15309-15318. [DOI: 10.1002/chem.201803094] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Ram R. R. Prasad
- EaStCHEM School of ChemistryUniversity of St Andrews Purdie Building North Haugh St Andrews KY16 9ST UK
| | - Daniel M. Dawson
- EaStCHEM School of ChemistryUniversity of St Andrews Purdie Building North Haugh St Andrews KY16 9ST UK
| | - Paul A. Cox
- School of Pharmacy and Biomedical SciencesUniversity of Portsmouth St Michael's Building, White Swan Road Portsmouth PO1 2DT UK
| | - Sharon E. Ashbrook
- EaStCHEM School of ChemistryUniversity of St Andrews Purdie Building North Haugh St Andrews KY16 9ST UK
| | - Paul A. Wright
- EaStCHEM School of ChemistryUniversity of St Andrews Purdie Building North Haugh St Andrews KY16 9ST UK
| | - Matthew L. Clarke
- EaStCHEM School of ChemistryUniversity of St Andrews Purdie Building North Haugh St Andrews KY16 9ST UK
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5
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Das T, Uyama H, Nandi M. Pd-bound functionalized mesoporous silica as active catalyst for Suzuki coupling reaction: Effect of OAcˉ, PPh3 and Clˉ ligands on catalytic activity. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Das T, Uyama H, Nandi M. Pronounced effect of pore dimension of silica support on Pd-catalyzed Suzuki coupling reaction under ambient conditions. NEW J CHEM 2018. [DOI: 10.1039/c8nj00254a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pore size of the mesoporous silica support affects the reactivity of heterogeneous palladium catalysts in the Suzuki reaction under ambient conditions, which is leveled at higher temperature.
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Affiliation(s)
- Trisha Das
- Integrated Science Education and Research Centre
- Siksha Bhavana
- Visva-Bharati University
- Santiniketan 731 235
- India
| | - Hiroshi Uyama
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Mahasweta Nandi
- Integrated Science Education and Research Centre
- Siksha Bhavana
- Visva-Bharati University
- Santiniketan 731 235
- India
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7
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Bhattacharjee A, Das T, Uyama H, Roy P, Nandi M. Cu- and Ni-Grafted Functionalized Mesoporous Silica as Active Catalyst for Olefin Oxidation. ChemistrySelect 2017. [DOI: 10.1002/slct.201702183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Trisha Das
- Integrated Science Education and Research Centre; Siksha Bhavana; Visva-Bharati University; Santiniketan- 731235 India
| | - Hiroshi Uyama
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka, Suita Osaka 565-0871 Japan
| | - Partha Roy
- Department of Chemistry; Jadavpur University, Jadavpur; Kolkata- 700 032 India
| | - Mahasweta Nandi
- Integrated Science Education and Research Centre; Siksha Bhavana; Visva-Bharati University; Santiniketan- 731235 India
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8
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Ferrer Í, Fontrodona X, Roig A, Rodríguez M, Romero I. A Recoverable Ruthenium Aqua Complex Supported on Silica Particles: An Efficient Epoxidation Catalyst. Chemistry 2017; 23:4096-4107. [DOI: 10.1002/chem.201604463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Íngrid Ferrer
- Departament de Química and Serveis Tècnics de Recerca; Universitat de Girona; Campus de Montilivi 17003 Girona Spain
| | - Xavier Fontrodona
- Departament de Química and Serveis Tècnics de Recerca; Universitat de Girona; Campus de Montilivi 17003 Girona Spain
| | - Anna Roig
- Institut de Ciència de Materials de Barcelona; ICMAB (CSIC), Campus UAB; 08193 Bellaterra Spain
| | - Montserrat Rodríguez
- Departament de Química and Serveis Tècnics de Recerca; Universitat de Girona; Campus de Montilivi 17003 Girona Spain
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca; Universitat de Girona; Campus de Montilivi 17003 Girona Spain
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9
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Jia Z, Wang K, Tan B, Gu Y. Ruthenium Complexes Immobilized on Functionalized Knitted Hypercrosslinked Polymers as Efficient and Recyclable Catalysts for Organic Transformations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600816] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhifang Jia
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- Department of Chemistry and Chemical Engineering; Shanxi Datong University; Datong 037009 People's Republic of China
| | - Kewei Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- Department of Chemistry and Chemical Engineering; Shanxi Datong University; Datong 037009 People's Republic of China
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Lanzhou 730000 People's Republic of China
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10
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Queffélec C, Schlindwein SH, Gudat D, Silvestre V, Rodriguez-Zubiri M, Fayon F, Bujoli B, Wang Q, Boukherroub R, Szunerits S. Wilkinson-Type Immobilized Catalyst on Diamond Nanoparticles for Alkene Reduction. ChemCatChem 2017. [DOI: 10.1002/cctc.201601424] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Clémence Queffélec
- Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM); Université de Nantes, CNRS, UMR 6230; 2, rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Simon H. Schlindwein
- Institut für Anorganische Chemie; University of Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Dietrich Gudat
- Institut für Anorganische Chemie; University of Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Virginie Silvestre
- Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM); Université de Nantes, CNRS, UMR 6230; 2, rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Mireia Rodriguez-Zubiri
- Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM); Université de Nantes, CNRS, UMR 6230; 2, rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Franck Fayon
- CEMHTI-CNRS, 1D av. de la Recherche Scientifique; 45071 Orléans Cedex 2 France
| | - Bruno Bujoli
- Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM); Université de Nantes, CNRS, UMR 6230; 2, rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Qi Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Shandong University; Jinan 250061 P.R. China
| | - Rabah Boukherroub
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR-CNRS 8520; Université Lille 1; Avenue Poincaré-BP60069 59652 Villeneuve O'Ascq France
| | - Sabine Szunerits
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR-CNRS 8520; Université Lille 1; Avenue Poincaré-BP60069 59652 Villeneuve O'Ascq France
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11
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Campos CH, Belmar JB, Jeria SE, Urbano BF, Torres CC, Alderete JB. Rhodium(i) diphenylphosphine complexes supported on porous organic polymers as efficient and recyclable catalysts for alkene hydrogenation. RSC Adv 2017. [DOI: 10.1039/c6ra26104c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly stable, chemoselective and recyclable immobilized Rh(i) homogeneous catalysts for alkene hydrogenation.
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Affiliation(s)
- Cristian H. Campos
- Departamento de Físico-Química
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Julio B. Belmar
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Solange E. Jeria
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Bruno F. Urbano
- Departamento de Polímeros
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Cecilia C. Torres
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andres Bello
- Talcahuano
- Chile
| | - Joel B. Alderete
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
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12
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Janczewski Ł, Gajda A, Braszczyńska J, Gajda T. Microwave-assisted synthesis of dialkyl ω-azidoalkylphosphonates. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1221114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Łukasz Janczewski
- Institute of Organic Chemistry, Lodz University of Technology, Łódź, Poland
| | - Anna Gajda
- Institute of Organic Chemistry, Lodz University of Technology, Łódź, Poland
| | - Julia Braszczyńska
- Institute of Organic Chemistry, Lodz University of Technology, Łódź, Poland
| | - Tadeusz Gajda
- Institute of Organic Chemistry, Lodz University of Technology, Łódź, Poland
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13
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Bhanja P, Bhaumik A. Organic-Inorganic Hybrid Metal Phosphonates as Recyclable Heterogeneous Catalysts. ChemCatChem 2016. [DOI: 10.1002/cctc.201501303] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Piyali Bhanja
- Department of Materials Science; Indian Association for the Cultivation of Science; Jadavpur Kolkata - 700 032 India
| | - Asim Bhaumik
- Department of Materials Science; Indian Association for the Cultivation of Science; Jadavpur Kolkata - 700 032 India
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14
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Nambu H, Shimokawa I, Fujiwara T, Yakura T. Recyclable Magnetic Nanoparticle‐Supported Iodoarene Catalysts for Oxidation of 4‐Alkoxyphenols to Quinones. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hisanori Nambu
- Graduate School of Medicine and Pharmaceutical SciencesInstitution University of Toyama Sugitani Toyama 930-0194 Japan), Fax: (+81) 76-434-5053
| | - Ikumi Shimokawa
- Graduate School of Medicine and Pharmaceutical SciencesInstitution University of Toyama Sugitani Toyama 930-0194 Japan), Fax: (+81) 76-434-5053
| | - Tomoya Fujiwara
- Graduate School of Medicine and Pharmaceutical SciencesInstitution University of Toyama Sugitani Toyama 930-0194 Japan), Fax: (+81) 76-434-5053
| | - Takayuki Yakura
- Graduate School of Medicine and Pharmaceutical SciencesInstitution University of Toyama Sugitani Toyama 930-0194 Japan), Fax: (+81) 76-434-5053
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