Download or read book The Synthesis and Characterization of Organometallic Polysulfanes and Polyselenanes of Titanium IV Zirconium IV and Hafnium IV written by James M. McCall and published by . This book was released on 1983 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The complexes Cp(,2)M(SH)(,2), where M = Ti and Zr, have been prepared and treated with S(,8) and >N-S(,x)-NN = benzimidazolyl, phthalimidyl and x = 1, 2, to give the metallacyclohexasulfanes Cp(,2)MS(,5). Reaction of Cp(,2)TI(SH)(,2) with >N-SR, where >N = phthalimidyl, succinimidyl, gave the complexes Cp(,2)Ti(S(,2)R)(,2) (R = CHMe(,2)) and Cp(,2)Ti(SR)(S(,3)R) (R = Ph, 4-C(,6)H(,4)Me). The thiolates Cp(,2)Ti(Cl)SR and Cp(,2)Ti(SR)(,2) (R = CHMe(,2), CMe(,3), Ph, 4-C(,6)H(,4)Me) were prepared for comparison. Treatment of the complexes Cp(,2)MCl(,2) with anhydrous solutions of Li(,2)E(,x) gave the complexes Cp(,2)ME(,5), where M = Ti, Zr, Hf and E = S, Se. The compounds (RCp)(,2)TiS(,5) (R = Me, SiMe(,3)),CH(,2)Cp(,2)TiS(,5), and (Me(,5)Cp)CpTiS(,5) were prepared similarly. Reaction of Li(,2)S(,x) with (Me(,5)Cp)(,2)MCl(,2) gave the metallacyclotetrasulfanes (Me(,5)Cp)(,2)MS(,3). The complex Cp(,2)Ti{S(CH(,2))(,3)S} was synthesized. Variable temperature ('1)H NMR studies established the barriers ((DELTA)G('(NOT=))) for ME(,x) and TiS(,2)C(,3) ring reversal in the above complexes. The crystal structures of Cp(,2)Ti(SPh)(S(,3)Ph), Cp(,2)MS(,5), and (Me(,5)Cp)(,2)TiS(,3) are discussed." --
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1982 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organometallic Chemistry of Titanium Zirconium and Hafnium written by P.C. Wailes and published by Elsevier. This book was released on 2012-12-02 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organometallic Chemistry of Titanium, Zirconium, and Hafnium covers the chemistry of organic complexes of titanium, zirconium, and hafnium having metal-to-carbon linkage. This book is organized into eight chapters that consider the significant developments in delineating the chemistry of these metal derivatives. This book starts with a description of the stability and bonding in cyclopentadienyl derivatives of the metals, based on the thermodynamic and spectroscopic evidence. The remaining chapters discuss the preparation and reactions of titanium-, zirconium-, and hafnium-bonded organic compounds. These chapters also look into the synthetic difficulties encountered from the reactions and preparation of these compounds. The stabilization and adduct formation of these metal complexes are also explored. Organic chemists and organic chemistry researchers and students will find this book invaluable.
Download or read book Organometallic Chemistry of Titanium Zirconium and Hafnium written by P. C. Wailes and published by . This book was released on 1974-01-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organometallic Chemistry of Titanium, Zirconium, and Hafnium...
Download or read book Highly Reduced Organometallics of the Group IV Elements written by David Walter Blackburn and published by . This book was released on 1992 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemistry of Titanium Zirconium and Hafnium written by R. J. H. Clark and published by Elsevier. This book was released on 2018-03-12 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Titanium, Zirconium and Hafnium deals with the chemistry of titanium, zirconium, and hafnium and covers topics ranging from the occurrence and metallurgy of all three elements to their nuclear, physical, and chemical properties as well as analytical chemistry. The compounds of titanium, zirconium, and hafnium are also discussed. This volume is comprised of two chapters and opens with a historical overview and discovery of titanium, along with its occurrence and distribution, metallurgical aspects, and nuclear and physicochemical properties. The compounds of titanium are also considered, including alloys and complexes; hydrides and oxides; halides and oxyhalides; titanates and antimonides; and carbides and borides. The second chapter is devoted to zirconium and hafnium, their occurrence and metallurgy; and physical, chemical, and biological properties. Compounds of zirconium and hafnium are described, from alloys and hydrides to zirconates and hafnates; nitrides, phosphides, and arsenides; carbides, silicides, and germanides; molybdates, tungstates, halates, and perchlorates; alkoxides, mercaptides, and dithiocarbamates; and amides, alkylamides, triazenes, phthalocyanines, and bipyridyls. This book will be a valuable source of information for inorganic chemists.
Download or read book Organometallics in Synthesis written by Bruce H. Lipshutz and published by John Wiley & Sons. This book was released on 2013-12-02 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides detailed procedures and useful hints on organometallic reactions of Cu, Rh, Ni, and Au With contributions from leading organic chemists who specialize in the use of organometallics in organic synthesis, this acclaimed Manual offers an especially valuable resource for all synthetic chemists, providing a practical reference for conducting transition metal mediated synthetic reactions. This Fourth Manual is divided into four chapters: Chapter I: Organocopper Chemistry Chapter II: Organorhodium Chemistry Chapter III: Organonickel Chemistry Chapter IV: Organogold Chemistry Each of these newly written chapters features detailed, practical examples from the literature that guide readers through the preparation of organometallic reagents and their applications in organic synthesis. Procedures are presented in the Manual's acclaimed step-by-step recipe format, enabling both novices and experienced synthetic chemists to perform all the reactions with ease. In addition, the Manual features: Extensive background information on the organometallic chemistry of Cu, Rh, Ni, and Au References to the primary literature facilitating further investigation of all the reactions covered in the Manual Mechanistic considerations to help readers better understand how the desired products are formed Future research opportunities for each organometallic class Organometallics in Synthesis provides extensive and detailed information enabling synthetic chemists to readily assess the applicability of a synthetic method to a given need, and then to perform the reaction with confidence. The Manual covers both established organometallic procedures along with the most recently published protocols. Industrial processes are increasingly relying on organometallic chemistry. In this Manual, readers will find applications to such fields as natural products total synthesis, pharmaceuticals, fine chemicals, biotechnology, agricultural science, polymers, and materials science.
Download or read book Synthesis Characterization and Density Functional Theory Investigations of Tris cyclopentadienyl Compounds of Zirconium and Hafnium written by Erick Joseph Palmer and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Density functional theory (DFT) calculations were performed to investigate the molecular orbital interactions and the bonding preferences of tris-Cp compounds of zirconium and hafnium. Calculations of the vertical ionization energies of Cp2MCl2 and Cp3MCl (M=Zr, Th) compounds mirror the experimental data observed by PES: Cp2ZrCl2 has a higher first ionization energy than Cp2ThCl2, which is consistent with electronegativity arguments, while Cp3ThCl has a larger first ionization energy than Cp3ZrCl, which is the result of f-orbital stabilization of the 5a2 HOMO in Cp3ThCl. In general, geometry optimizations of a large variety of Cp3MX (M=Zr, Hf; X=halide, H, alkyl, alkoxide, amido) compounds led to the location of two primary structures along the potential energy surface: a 3-5 structure, which exhibits three h5-C5H5 ligands, and a 2-5,1-1 structure, which exhibits two h5-C5H5 and one h1-C5H5 ligands. The binding preference of these structure types have been shown to be dependent upon the p-donor ability of the X ligands. When X has no p-donor ability as in the case of the hydride compounds, the 3-5 structure is more stable for both zirconium and hafnium. When X is a strong p-donor, the 2-5,1-1 structure is more stable for both zirconium and hafnium. When X is a weak p-donor as in the halide compounds, the zirconium complexes prefer the 3-5 geometry while the hafnium complexes prefer the 2-5,1-1 geometry. These structural preferences indicate a competition between the p-donation of the X lone pair and the tris-Cp ligand set. This competition leads to a destabilization of the 15e molecular orbital when X is a strong p-donor; this destabilization causes the 2-5,1-1 structure to be more stable than the 3-5 structure. (MeCp)3HfCl and (MeCp)4Zr were synthesized and fully characterized. Their crystal structures are discussed in light of our theoretical model presented. Solid state dynamics in these systems were also studied via variable-temperature CP-MAS NMR.
Download or read book Titanium and Zirconium in Organic Synthesis written by Ilan Marek and published by Wiley-VCH Verlag GmbH. This book was released on 2002-01-01 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last years, the role of titanium and zirconium in organic synthesis has dramatically increased and nowadays, no synthetic chemist can afford to be without a sound knowledge of this fascinating organometal chemistry. This unique book, edited by Ilan Marek, thus summarizes the numerous applications and developments of these two group 4 early transition metal complexes. A plethora of internationally renowned experts and leading scientists in this field cover all the significant aspects of this increasingly important part of organic chemistry and bring the reader up to date. A particularly attractive and useful feature is the inclusion of typical experimental procedures, chosen for broad utility and application. This comprehensive demonstrates the diversity and the applications of these important compounds and is a must-have for all chemists working in organometallic or synthetic organic chemistry.
Download or read book Organometallic Syntheses written by R. Bruce King and published by Elsevier. This book was released on 2013-10-22 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 160 detailed and tested procedures for the preparation of specific organometallic compounds are given in Volume 4. Part I contains procedures for the synthesis of 76 types of transition metal organometallic compounds, and Part II procedures for the synthesis of 85 nontransition metal organometallic compounds. In both parts, the editors have sought to include procedures that give the safe, reliable synthesis of organometallic compounds that can lay some claim to significance in current chemical research. This significance may be based on various factors such as: (a) the synthesis describes the formation of an unusual or less common structural type; (b) the compound prepared is a useful intermediate in other syntheses; (c) the compound is a model reagent for investigating the mechanisms of various fundamental or industrial processes, such as the Fischer-Tropsch reaction; (d) the compound is a useful reagent in organic synthesis; and (e) the techniques employed in the synthesis of the compound are unusual and worthy of further application, such as metal-atom and electrochemical procedures.Each specific or generalized procedure is organized into the following sections: an Introduction which discusses the available procedures and the reasons guiding the choice of the one selected; a Procedure section which strives to describe the modus operandi, the safety concerns and pitfalls in the preparation; a Properties section that offers further physical and chemical data on the product and, where appropriate, indications of how the compounds can be employed in research; and a Reference section which gives both leading literature citations and supplemental comments on the procedure.Research laboratories in organometallic chemistry, organic chemistry, inorganic chemistry and molecular catalysis have in this book a rich source of information on the preparation of organometallic compounds.
Download or read book Experimental Organometallic Chemistry written by Marcetta Y. Darensbourg and published by . This book was released on 1987 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers the latest synthetic methodology and characterization techniques used in organometallic chemistry. Describes specialized techniques for difficult synthesis, as well as handling and sampling techniques used by leading experimentalists worldwide. Provides timely, useful information for any scientist who handles or characterizes organometallic compounds.
Download or read book The Chemistry of Titanium Zirconium and Hafnium written by R J H. Clark and published by . This book was released on 1975 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemistry of Titanium Zirconium and Hafnium written by Robin Jon Hawes Clark and published by Pergamon. This book was released on 1975 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organo di Metallic Compounds or Reagents written by Zhenfeng Xi and published by Springer. This book was released on 2014-09-11 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
Download or read book Organometallics in Synthesis written by Manfred Schlosser and published by John Wiley & Sons. This book was released on 2013-05-28 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: WINNER of the 2013 PROSE Award in Chemistry & Physics This latest edition enables readers to master new classes of organometallic compounds and syntheses A popular resource used by synthetic organic chemists around the world, this book enables readers to conduct seamless synthetic reactions involving key organometallics. Each reaction is set forth in the book's acclaimed recipe-style format so that readers can easily replicate the results in their own labs. Moreover, each chapter has been written by a world leader in the field of organometallics in organic synthesis. These authors offer hands-on guidance and practical examples illustrating the preparation of organometallics and its application in organic synthesis. This Third Manual of Organometallics in Synthesis features completely new content and topics, with an eye towards providing researchers with the most useful and practical reference on the synthesis of organometallics. Organized into chapters by type of organometallic compound, the book covers: Organoalkali chemistry Organomagnesium and organozinc chemistry Organosilicon and relating organotin chemistry Organoiron chemistry Organopalladium chemistry Within each chapter, readers will find background information to learn more about the class of organometallics as well as mechanistic considerations. The authors thoroughly discuss the various methods of preparing the organometallic compounds presented in the book and outline their uses in synthetic reactions. In addition to current applications, the authors explore future research opportunities for each organometallic class. References at the end of each chapter enable readers to explore all the topics in greater depth. More and more industrial processes rely on organometallic chemistry. As a result, readers will find this book's step-by-step instructions essential in such fields as natural product synthesis, pharmaceuticals, fine chemicals, biotechnology, polymers, and materials science.
