Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis
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Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis
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Author : Evgenii Talsi
language : en
Publisher: CRC Press
Release Date : 2017-04-07
Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis written by Evgenii Talsi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-07 with Science categories.
This book reviews advances in important and practically relevant homogeneous catalytic transformations, such as single-site olefin polymerizations and chemo- and stereo-selective oxidations. Close attention is paid to the experimental investigation of the active sites of catalytic oxidation systems and their mechanisms. Major subjects include the applications of NMR and EPR spectroscopic techniques and data obtained by other physical methods. The book addresses a broad readership and focus on widespread techniques available in labs with NMR and EPR spectrometers.
Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis
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Author : Evgenii P. Talsi
language : en
Publisher:
Release Date : 2017
Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis written by Evgenii P. Talsi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Catalysis categories.
4.2.1.2 Activation of L2iPrFeCl2 with AlMe3 -- 4.2.2 Bis(imino)pyridine Cobalt Ethylene Polymerization Catalysts -- 4.2.2.1 Activation of L2iPrCoIICl2 with MAO -- 4.2.2.2 Activation of L2iPrCoIICl2 with AlMe3 -- 4.2.3 a-Diimine Vanadium(III) Ethylene Polymerization Catalysts -- 4.2.3.1 System L2MeVCl3/AlMe3/[Ph3C][B(C6F5)4] -- 4.2.3.2 System L2MeVCl3/MAO -- 4.2.4 Ethylene Polymerization Precatalyst Based on Calix[4]arene Vanadium(V) Complex -- 4.2.4.1 Reaction of Calix[4]arene Vanadium(V) Complex with AlEt2Cl -- 4.2.4.2 Reaction of Calix[4]arene Vanadium(V) Complex with AlMe2Cl -- 4.2.4.3 Reaction of Calix[4]arene Vanadium(V) Complex with AlEt3 -- 4.2.5 Neutral NiII2-(N, O)-salicylaldiminato Olefin Polymerization Catalysts -- 4.2.5.1 Chain-Propagating Species Formed upon Ethylene Polymerization with Neutral Salicylaldiminato Nickel(II) Catalysts -- 4.2.5.2 Evaluation of the Size of Ni-Polymeryl Species by PFG NMR Spectroscopy -- 4.2.5.3 Catalyst Deactivation -- 4.2.6 Formation of Cationic Intermediates upon the Activation of Bis(imino)pyridine Nickel Catalysts -- 4.2.7 Cationic Intermediates Formed upon the Activation of Ni(II) Catalysts with AlMe2Cl and AlEt2Cl -- 4.3 On the Origin of Living Polymerization over o-Fluorinated Post-Titanocene Catalysts -- 4.4 Selective Ethylene Trimerization by Titanium Complex Bearing Phenoxy Imine Ligand -- References -- Index
Advances In Organometallic Chemistry
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Author : Pedro J. Perez
language : en
Publisher: Academic Press
Release Date : 2020-03-03
Advances In Organometallic Chemistry written by Pedro J. Perez and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-03 with Science categories.
Advances in Organometallic Chemistry, Volume 73, the latest release in this longstanding serial, is known for its comprehensive coverage of topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more. It is ideal for a wide range of researchers involved in organometallic chemistry, including synthetic protocols, mechanistic studies and practical applications. Specific chapters in this new release include Metal carbonyl promoted multicomponent coupling of alkyne for synthesis of heterocyclic compounds, Group 10 metal(0) complexes stabilized by phosphorus and carbon donor ligands, Synthesis of Nitrogen-containing Molecules via Transition Metal-Catalyzed Reactions on Isoxazoles, Anthraniils and Benzoisoxazoles, and more. Contains contributions from leading authorities in the field of organometallic chemistry Covers topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more Informs and updates readers on the latest developments in the field Carefully edited to provide easy-to-read material
In Situ Nmr Methods In Catalysis
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Author : Joachim Bargon
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-05-15
In Situ Nmr Methods In Catalysis written by Joachim Bargon and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-05-15 with Science categories.
Achemist,facedwiththeproblemofdeterminingthemechanismofachemical reaction, tries to identify a set of reactions that will account for the observed behavior:Ideally,asmallsetofknownreactionsshoulddescribeingreatdetail exactly what takes place at each stage of a chemical transformation. The fact that many reactions proceed in a stepwise fashion can most convincingly be demonstrated if intermediate species can be isolated and shown to proceed to the same products under otherwise identical reaction conditions. An - termediate is the reaction product of each of these steps, except for the last onethatformsthe?nalproduct. Someintermediatesarestablecompoundsin theirownright;someothers,however,aresoreactivethattheirisolationisnot possible. Occasionally, evidence for the existence of short-lived intermediates may be obtained, in particular by spectroscopic observation. The latter may - low a direct observation or an indirect inference from unusual phenomena occurring in the reaction products during in situ investigations of their c- responding chemical reactions. In NMR spectroscopy, for example, transient emissionandenhanced absorptionlinesmaybeobserved, andoneisinclined to believe that there is a universal and unambiguous reason for their appe- ance. Thisisnotnecessarilythecase,however,sincethisseeminglyidentical phenomenon may have a strikingly different origin: During free radical re- tions,aphenomenoncalledchemicallyinduced dynamicnuclear polarization (CIDNP) may give rise to virtually the same effect as occasionally observed duringhomogeneous(andpossiblyevenheterogeneous)hydrogenations:The latter phenomenon, called parahydrogen-induced polarization (PHIP), has a completely different physical basis. It was ?rst noticed twenty years later than CIDNP and occurs if there is an imbalance of the two spin isomers of symmetric molecules such as dihydrogen when hydrogenating unsaturated compoundsusingappropriatecatalysts. Thesetwoeffects,ifnotdifferentiated properly, can cause misinterpretations of reaction mechanisms, as occurred initially when their different origins had not yet been understood approp- ately.
Mechanisms In Homogeneous Catalysis
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Author : Brian Heaton
language : en
Publisher: John Wiley & Sons
Release Date : 2006-03-06
Mechanisms In Homogeneous Catalysis written by Brian Heaton and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-03-06 with Science categories.
While chemists using spectroscopic methods need to learn from the specialists, they do not normally read the spectroscopists' original papers. This book provides this very information -- summarizing some recent advances in the mechanistic understanding of metallocene polymerization catalysts and the role of NMR spectroscopy in these endeavors. Adopting a real practice-oriented approach, the authors focus on two of the most important spectroscopic techniques with two parts devoted to each of NMR and IR spectroscopy - as well as on important industrial applications with regard to the reaction discussed. Rather than providing a complete and exhaustive review of homogeneous hydrogenation and its detailed mechanisms, the book focuses on the specific spectroscopic techniques and the mechanistic information that has been obtained from their application. The result is unique in its scope, allowing chemists from different fields to learn which techniques can be applied for their specific synthetic problems. The prizewinning editor, Professor Brian Heaton, is the key player in the field, and has brought together here a team of authors to cater for specialists, and researchers in industry and academia.
Industrial Applications Of Homogeneous Catalysis
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Author : A. Mortreux
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Industrial Applications Of Homogeneous Catalysis written by A. Mortreux and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Catalysts are now widely used in both laboratory and industrial-scale chemistry. Indeed, it is hard to find any complex synthesis or industrial process that does not, at some stage, utilize a catalytic reaction. The development of homogeneous transition metal catalysts on the laboratory scale has demonstrated that these systems can be far superior to the equivalent heterogeneous systems, at least in terms of selectivity. is an increasing interest in this field of research from both an Thus, there academic and industrial point of view. In connection with the rapid developments in this area, four universities from the E.E.C (Aachen, FRG; Liege, Belgium; Milan, Italy; and Lille, France) have collaborated to organise a series of seminars for high-level students and researchers. These meetings have been sponsored by the Commission of the E.E.C and state organizations. The most recent of these meetings was held in Lille in September 1985 and this book contains updated and expanded presentations of most of the lectures given there. These lectures are concerned with the field of homogeneous transition metal catalysis and its application to the synthesis of organic intermediates and fine chemicals from an academic and industrial viewpoint. The continuing petroleum crisis which began in the early 1970s has given rise to the need to develop new feedstocks for the chemical industry.
Hyperpolarization Methods In Nmr Spectroscopy
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Author : Lars T. Kuhn
language : en
Publisher: Springer
Release Date : 2013-09-13
Hyperpolarization Methods In Nmr Spectroscopy written by Lars T. Kuhn and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-13 with Science categories.
Elucidating Organic Reaction Mechanisms using photo-CIDNP Spectroscopy, by Martin Goez. Parahydrogen Induced Polarization by Homogeneous Catalysis: Theory and Applications, by Kerstin Münnemann et al. Improving NMR and MRI Sensitivity with Parahydrogen, by R. Mewis & Simon Duckett. The Solid-state Photo-CIDNP Effect, by Jörg Matysik et al. Parahydrogen-induced Polarization in Heterogeneous Catalytic Processes, by Igor Koptyug et al. Dynamic Nuclear Polarization Enhanced NMR Spectroscopy, by U. Akbey & H. Oschkinat. Photo-CIDNP NMR Spectroscopy of Amino Acids and Proteins, by Lars T. Kuhn.
Electron Paramagnetic Resonance
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Author : Damien M. Murphy
language : en
Publisher: Royal Society of Chemistry
Release Date : 2018-11-06
Electron Paramagnetic Resonance written by Damien M. Murphy and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-06 with categories.
Electron Paramagnetic Resonance (EPR) applications remain very significant in modern analytical science and this volume compiles critical coverage of developments in the recent literature by a handpicked group of researchers at the cutting-edge of the field. The topics covered in this volume describe contrasting types of EPR application, including light induced hyperpolarization and disordered proteins to spin labels and nanomaterials. Providing a snap shot of the area, this book is a useful addition to any library supporting this research.
Journal Of The Physical Society Of Japan
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Author :
language : en
Publisher:
Release Date : 2018
Journal Of The Physical Society Of Japan written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Physics categories.
Redox Active Ligands
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Author : Marine Desage-El Murr
language : en
Publisher: John Wiley & Sons
Release Date : 2024-01-31
Redox Active Ligands written by Marine Desage-El Murr and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-31 with Science categories.
Redox-Active Ligands Authoritative resource showcasing a new family of ligands that can lead to better catalysts and promising applications in organic synthesis Redox-Active Ligands gives a comprehensive overview of the unique features of redox-active ligands, describing their structure and synthesis, the characterization of their coordination complexes, and important applications in homogeneous catalysis. The work reflects the diversity of the subject by including ongoing research spanning coordination chemistry, organometallic chemistry, bioinspired catalysis, proton and electron transfer, and the ability of such ligands to interact with early and late transition metals, lanthanides, and actinides. The book is divided into three parts, devoted to introduction and concepts, applications, and case studies. After the introduction on key concepts related to the field, and the different types of ligands and complexes in which ligand-centered redox activity is commonly observed, mechanistic and computational studies are described. The second part focuses on catalytic applications of redox-active complexes, including examples from radical transformations, coordination chemistry and organic synthesis. Finally, case studies of redox-active guanidine ligands, and of lanthanides and actinides are presented. Other specific sample topics covered include: An overview of the electronic features of redox-active ligands, covering their historical perspective and biological background The versatility and mode of action of redox-active ligands, which sets them apart from more classic and tunable ligands such as phosphines or N-heterocyclic carbenes Preparation and catalytic applications of complexes of stable N-aryl radicals Metal complexes with redox-active ligands in H+/e- transfer transformations By providing up-to-date information on important concepts and applications, Redox-Active Ligands is an essential reading for researchers working in organometallic and coordination chemistry, catalysis, organic synthesis, and (bio)inorganic chemistry, as well as newcomers to the field.