Download or read book Early Transitional Metal Alkyl Alkylidene and Alkylidyne Chemistry written by Zachary John Tonzetich and published by . This book was released on 2007 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The nitride reacts with trimethylsilyl trifluoromethanesulfonate to afford the imido complex, W(NTMS)(CH2-t- Bu)(OAr)2(OTf), The X-ray crystal structure of W(C-t-Bu)(CH2-t-Bu)(OAr)2, [W(N)(CH2-t- Bu)(OAr)2]2, and W(NTMS)(CH2-t-Bu)(OAr)2(OTf) are reported as are studies concerning the catalytic efficiency of both W(C-t-Bu)(CH2-t-Bu)(OAr)2 and W(C-t-Bu)(CH2-t-Bu)(O-1- adamantyl)2. APPENDIX A. The reaction of Ph3P=CH2 with Mo(NAr)(CH-t-Bu)(O-t-BuF6)2 (Ar = 2,6-i-Pr2C6H3; O-t-BuF6 = OC(CF3)2Me) produces the anionic alkylidyne complex {Ph3PMe}{Mo(NAr)(C-t-Bu)(O-t- BuF6)2}. An X-ray structure determination of the complex reveals a bent Mo-N-C angle for the imido group, as expected when a metal-carbon triple bond is present. The reactivity of the anion towards electrophiles has been examined and shown to occur predominantly at the imido nitrogen.
Download or read book Theoretical Studies of Early transition metal Alkyl and Alkylidene Complexes written by Zhi-Hui Peng and published by . This book was released on 1998 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alkyls and Aryloxides of the Early Transition metals written by A. W. Duff and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early transition metal Alkylidene Chemistry written by Jonathan Bruce Diminnie and published by . This book was released on 1999 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organometallics written by Manfred Bochmann and published by . This book was released on 1994 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Reactivity and Structural Studies of Early Transition Metal Alkyl and Alkylidene Complexes in PI Loaded Environments PHD written by Paula Marie Briggs and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Molecular Catalysis written by and published by Elsevier. This book was released on 2003-04-02 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost all contemporary organic synthesis involve transition metal complexes as catalysts or particular reagents. The aim of this book is to provide the reader with detailed accounts of elementary processes within molecular catalysis to allow its development and as an aid in designing novel catalytic systems. The book comprises authoritative reviews on elementary processes from experts working at the forefront of organometallic chemistry. · This is the first book that focuses on elementary processes in transition metal complexes for understanding catalytic mechanisms· Provides detailed description of elementary processes involved in catalytic cycles by experts in the field· Provides an overview of the mechanisms of various homogeneous catalyses
Download or read book Transition Metal Alkyl Chemistry written by Edwin Charles Culbertson and published by . This book was released on 1976 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Developments in Transition Metal Alkyl Chemistry written by David Armstrong and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first section of this thesis, the synthesis and reactivity of the first reported palladium(IV) aryldiazenido complex is explored, as well as its relevance toward the potential for catalytic coupling cycles based on the Pd(II)/Pd(IV) redox pair. The synthesis was achieved by two-electron oxidation of the anionic palladium(II) complex KPd(Tp*)Me2 (Tp*- = hydridotris(3,5-dimethylpyrazolyl)borate) by an aryldiazonium cation. The resulting Pd(IV) complex could be cleanly isolated in good yields, is stable for weeks as a solid when kept cold, and decays in solution over a period of days at room temperature. The decomposition was studied in great depth by both NMR and EPR spectroscopy and it was determined that one-electron pathways were involved. From the synthesis of the Pd(IV) aryldiazenido complex, side reactions were observed whereby free Tp*- ligand could be modified via hydride abstraction by an aryldiazonium cation to form the elusive tris(pyrazolyl)borane which could be trapped and isolated as its acetone adduct in a Frustrated Lewis-pair type reaction. The resulting compound can act as a bidentate N-donor ligand with unusual axial steric bulk. Addition of a second equivalent of aryldiazonium cation further abstracts a 3,5-dimethylpyrazolide group to form a cationic intermediate which can again be trapped by acetone to form a C2-chiral cation. In the later chapters of this thesis, extensive work towards the synthesis of 1- and 2- adamantyl anion equivalents was explored, as well as their utility in the synthesis of transition metal adamantyl complexes. The development of new reliable synthetic methods to produce adamantyl magnesium and zinc compounds (including the unknown diadamantylzincs) was achieved, producing clean and shelf stable compounds. The applications of these adamantyl anions toward organometallic chemistry was investigated. It was observed that the diadamantylzinc compounds were particularly potent in transmetallation reactions, cleanly producing several new transition metal and main group adamantyl complexes. While compounds containing mercury, gold, bismuth, tungsten, and platinum have now been synthesized, those of particular interest have the potential for C-H bond activation chemistry and could open access to new compound classes of facially trifunctionalized adamantanes.
Download or read book Collected Accounts of Transition Metal Chemistry written by Fred Basolo and published by . This book was released on 1973 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late Transition Metal Polymerization Catalysis written by Bernhard Rieger and published by Wiley-VCH Verlag GmbH. This book was released on 2003 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even some fifty years after their discovery, transition metals have lost none of their fascination. The use of complex compounds in these elements has not only revolutionized synthesis in the laboratory, but has also led to them playing an important role in many industrial applications. Each year, millions of tons of plastics are produced around the world and, by varying the ligands in the catalytically active compounds, the properties of the resulting polymers can even be tailored for use. For this purpose, sandwich compounds from early transition metals have been common until now, but interest has focused increasingly on the late transition metals. In this book, the world's leading authors from research and industry discuss the latest developments in research into palladium, zinc, iron and nickel catalysis. In so doing, they systematically introduce readers to the basic principles and illustrate how these innovative catalysts can be effectively used for polymerizations. The result is an ideal reference work, invaluable for every organic chemist working in catalysis or polymer research.
Download or read book Alkene Polymerization Reactions with Transition Metal Catalysts written by Yury Kissin and published by Elsevier. This book was released on 2008-03-10 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past 30 years, the field of alkene polymerization over transition metal catalysts underwent several major changes:1. The list of commercial heterogeneous Ziegler-Natta catalysts for the synthesis of polyethylene and stereoregular polyolefins was completely renewed affording an unprecedented degree of control over the polymer structure.2. Research devoted to metallocene and other soluble transition-metal catalysis has vastly expanded and has shifted toward complexes of transition metals with multidentate ligands.3. Recent developments in gel permeation chromatography, temperature-rising fractionation, and crystallization fractionation provided the first reliable information about differences between various active centers in transition-metal catalysts.4. A rapid development of high-resolution 13C NMR spectroscopy resulted in greatly expanded understanding of the chemical and steric features of polyolefins and alkene copolymers. These developments require a new review of all aspects of alkene polymerization reactions with transition-metal catalysts. The first chapter in the book is an introductory text for researchers who are entering the field. It describes the basic principles of polymerization reactions with transition-metal catalysts, the types of catalysts, and commercially manufactured polyolefins. The next chapter addresses the principal issue of alkene polymerization catalysis: the existence of catalyst systems with single and multiple types of active centers. The subsequent chapters are devoted to chemistry and stereochemistry of elemental reaction steps, structures of catalyst precursors and reactions leading to the formation of active centers, kinetics of polymerization reactions, and their mechanisms. The book describes the latest commercial polymerization catalysts for the synthesis of polyethylenes and polypropylene The book provides a detailed description of the multi-center nature of commercial Ziegler-Natta catalysts. The book devotes specialized chapters to the most important aspects of transition metal polymerization catalysts: the reactions leading to the formation of active centers, the chemistry and stereochemistry of elemental polymerization steps, reaction kinetics, and the polymerization mechanism. The book contains an introductory chapter for researchers who are entering the field of polymerization catalysis. It describes the basic principles of polymerization reactions with transition-metal catalysts and the types of commercially manufactured polyolefins and copolymersThe book contains over 2000 references, the most recent up to end of 2006.
Download or read book Organometallic Chemistry and Catalysis written by Didier Astruc and published by Springer Science & Business Media. This book was released on 2007-08-02 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers both basic and advanced aspects of organometallic chemistry of all metals and catalysis. In order to present a comprehensive view of the subject, it provides broad coverage of organometallic chemistry itself. The catalysis section includes the challenging activation and fictionalization of the main classes of hydrocarbons and the industrially crucial heterogeneous catalysis. Summaries and exercises are provides at the end of each chapter, and the answers to these exercises can be found at the back of the book. Beginners in inorganic, organic and organometallic chemistry, as well as advanced scholars and chemists from academia and industry will find much value in this title.
Download or read book The Organometallic Chemistry of the Transition Metals written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2005-06-14 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded to reflect recent advances, this Fourth Edition of the classic text provides students and professional chemists with an excellent introduction to the principles and general properties of organometallic compounds, as well as including practical information on reaction mechanisms and detailed descriptions of contemporary applications.
Download or read book New Chemistry of Transition Metal Alkyls and Hydrides written by Jesse M. Jefferis and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Transition Metal Alkyl and Tetrahydroborate Complexes written by James Allen Jensen and published by . This book was released on 1988 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Structural and Mechanistic Studies in Early Transition Metal and Actinide Chemistry written by Janet E. Nelson and published by . This book was released on 1991 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
