Download or read book Using Insertion Chemistry to Synthesize New Coordination Environments for Organoactinide Complexes to Examine Structure Bonding and Reactivity written by Justin R. Walensky and published by . This book was released on 2009 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation uses insertion chemistry to create new coordination environments for actinide complexes and examines their subsequent reactivity. Since actinides play such a prominent role in nuclear processes and their disposal is an environmental issue, the study of their structure, reactivity, and coordination chemistry is of interest. This work has resulted in the isolation of new organoactinide complexes, new reactivity patterns, and new coordination modes of common substrates not seen before in f element chemistry. Chapter 1 gives details about the synthesis of mono(pentamethycyclopentadienyl) divalent lanthanide complexes, (C5Me5)Ln(BPh4), and their unusual structural arrangements that were observed in their crystal structures. The reductive and displacement reactivity of the samarium and ytterbium complexes is also described. In Chapter 2, the utility of cationic complexes in making sterically crowded uranium complexes is described with the synthesis of (C5Me5)2(C5Me4H)UMe. This complex does not have reductive reactivity like (C5Me5)3UMe and not all the methyl groups are displaced from the cyclopentadienyl ring plane equally. The synthesis of (C5Me5)2UMe[CH(SiMe3)2], the first mixed-alkyl actinide metallocene complex, is also shown. Chapter 3 starts a series of chapters on the metallocene amidinate moiety, {(C5Me5)2[iPrNC(Me)NiPr]}3- from insertion of iPrN=C=NiPr into one methyl group of (C5Me5)2AnMe2 to produce, (C5Me5)2[iPrNC(Me)NiPr]AnMe, An = Th, U. In addition, insertion of AdN3, Ad = adamantyl, into (C5Me5)2AnMe2 produces the metallocene triazenido complex, (C5Me5)2[(Ad)NNN(Me)]AnMe. Cationic metallocene amidinate complexes can be made by the abstraction of the methyl group in (C5Me5)2[iPrNC(Me)NiPr]AnMe with BPh3 to produce {(C5Me5)2[iPrNC(Me)NiPr]An}{BPh3Me}, An = Th, U. Reaction of KC5Me5 with each actinide complex produces the thorium "tuck-in" complex, (C5Me5)(C5Me4CH2)[iPrNC(Me)NiPr]Th, by C-H bond activation, and the trivalent uranium complex, (C5Me5)2[iPrNC(Me)NiPr]U, by reduction. This is detailed in Chapter 4. The comparative reactivity of (C5Me5)2[iPrNC(Me)NiPr]UMe and (C5Me5)2[(Ad)NNN(Me)]UMe is described in chapter 5. The abstraction of the methyl group by silver and copper salts to produce the corresponding halide and triflate complexes is demonstrated. This is the first time that copper salts have been shown to have this type of reactivity. Interestingly, the reaction of the amidinate complex with LiCH2SiMe3 leads to the trivalent species, (C5Me5)2[iPrNC(Me)NiPr]U, through reduction, but the reaction with the triazenido complex with yields the corresponding alkyl complex, (C5Me5)2[(Ad)NNN(Me)]U(CH2SiMe3). Further, the reaction of (C5Me5)2[iPrNC(Me)NiPr]UMe with the bulky alcohol, HOC6H2iPr2-2,6-4-Me, produces an unusual outer sphere aryloxide complex, {(C5Me5)2[iPrNC(Me)NiPr]U}{OAr}. In chapter 6, the reductive chemistry of (C5Me5)2[iPrNC(Me)NiPr]U is examined. Aryl sulfides, copper salts, and TlC5H5 prove to react with the trivalent complex, but this complex is far much less reactive than other trivalent uranium complexes. In chapter 7, the synthesis of a rare trivalent thorium complex, (C5Me5)2[iPrNC(Me)NiPr]Th is reported. In addition, the electronic structure and bonding of trivalent metallocene amidinate complexes, (C5Me5)2[iPrNC(Me)NiPr]An, An=Th, Pa, U, Np, Pu, Am, is described. Chapter 8 looks at the insertion chemistry of (C5Me5)2U(C & 881CPh)2 with the unsaturated substrates, CO2, PhNCO, Me3CC & 881N, and Me3CN & 881C. Insertion chemistry is one of the steps in the mechanism of catalytic and cascade reactions with the dialkynyl complex. Appendix A describes a new way of abstracting a methyl group of (C5Me5)2ThMe2 with 2,6-tetramethylpiperdine oxide (TEMPO) to produce, (C5Me5)2[C5H6NMe4-2,6-O]ThMe. The methyl group can also be abstracted with CuBr to produce the corresponding bromide. In addition, the reaction of (C5Me5)2Eu with benzaldehyde azine, PhCH=NN=CHPh, is described. The dark purple product, (C5Me5)2Eu(C14H12N2), is still a divalent europium with a coordinating ligand. Moreover, the lanthanide metallocene amidinate complex, (C5Me5)2[iPrNC(Me)NiPr]Ce, was crystallographically characterized and is discussed.

Download or read book Organoactinide Chemistry written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis considers three aspects of organoactinide chemistry. In chapter one, a bidentate phosphine ligand was used to kinetically stabilize complexes of the type Cp2MX2. Ligand redistribution processes are present throughout the synthetic work, as has often been observed in uranium cyclopentadienyl chemistry. The effects of covalent M-L bonding on the solution and solid state properties of U(III) coordination complexes are considered. In particular, the nature of the more subtle interaction between the metal and the neutral ligand are examined. Using relative basicity data obtained in solution, and solid state structural data (and supplemented by gas phase photoelectron measurements), it is demonstrated that the more electron rich U(III) centers engage in significant U .-->. L .pi.-donation. Trivalent uranium is shown to be capable of acting either as a one- or two-electron reducing agent toward a wide variety of unsaturated organic and inorganic molecules, generating molecular classes unobtainable via traditional synthetic approaches, as well as offering an alternative synthetic approach to molecules accessible via metathesis reactions. Ligand redistribution processes are again observed, but given the information concerning ligand lability, this reactivity pattern is applied to the synthesis of pure materials inaccessible from redox chemistry. 214 refs., 33 figs., 10 tabs.

Download or read book Integrated Approach to Coordination Chemistry written by Rosemary A. Marusak and published by John Wiley & Sons. This book was released on 2007-03-30 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coordination chemistry is the study of compounds formed between metal ions and other neutral or negatively charged molecules. This book offers a series of investigative inorganic laboratories approached through systematic coordination chemistry. It not only highlights the key fundamental components of the coordination chemistry field, it also exemplifies the historical development of concepts in the field. In order to graduate as a chemistry major that fills the requirements of the American Chemical Society, a student needs to take a laboratory course in inorganic chemistry. Most professors who teach and inorganic chemistry laboratory prefer to emphasize coordination chemistry rather than attempting to cover all aspects of inorganic chemistry; because it keeps the students focused on a cohesive part of inorganic chemistry, which has applications in medicine, the environment, molecular biology, organic synthesis, and inorganic materials.

Download or read book Synthetic Coordination and Organometallic Chemistry written by Alexander D. Garnovskii and published by CRC Press. This book was released on 2003-04-25 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference describes standard and nonstandard coordination modes of ligands in complexes, the intricacies of polyhedron-programmed and regioselective synthesis, and the controlled creation of coordination compounds such as molecular and hn-p-complexes, chelates, and homo- and hetero-nuclear compounds. It offers a clear and concise review of modern synthetic techniques of metal complexes as well as lesser known gas- and solid-phase synthesis, electrosynthesis, and microwave and ultrasonic treatment of the reaction system. The authors pay special attention to o-hydroxyazomethines and their S-, Se-containing analogues, b-diketones, and quinines, among others, and examine the immediate interaction of ligands and metal salts or carbonyls.

Download or read book Organometallic Bonding and Reactivity written by J.M. Brown and published by Springer. This book was released on 2003-07-01 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The making and breaking of carbon-metal bonds is fundamental to all the processes of organometallic chemistry and metal mediated homogeneous or heterogeneous catalysis. The ever expanding scope of highly specific stoichiometric and catalytic transformations or organic substrates involving metals requires a thorough physical and theoretical understanding of fundamental principles of organometallic structure and reactivity. Diffraction experiments form the basis of tailoring the molecular architecture of organometallic compounds for specific functions. Mass spectrometric techniques possess the power to provide direct information on the energetics of transient species generated in the gas-phase. Computational chemistry with ab initio or density functional methods make a reliable numerical assessment of structures and (relative) energies increasingly feasible. Embedding methods, combining quantum chemistry with force field of semiempirical MO treatments, quantum dynamic studies and the computational modelling of solvent effects extend the utility of the basic methods. This volume in the series Topics in Organometallic Chemistry presents a survey by renowned experts of important experimental and theoretical developments to elucidate basic aspects of bonding, energetics, reaction mechanisms, molecular geometries and solid-state structures of organometallic compounds. Written by authors with frontier research expertise in their fields, both experimental and quantum chemical techniques, methodologies, results and interpretations are detailed in a manner suitable for the non-specialist, who seeks state-of-the-art information in the respective field.

Download or read book Organoactinide Chemistry written by John Gerard Brennan and published by . This book was released on 1986 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activation of Unreactive Bonds and Organic Synthesis written by Shinji Murai and published by Springer. This book was released on 2003-07-01 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years a large repetoire of methods for the activation of unreactive organic functionalities and for their use in organic synthesis has been developed. In this volume, areas ranging from the activation of C-H bonds to the chemical transformation of dinitrogen are authoritatively discussed by leading experts in the field. To activate means to be able to cleave otherwise inert chemical bonds. The cleavage and formation of chemical bonds is fundamental to organic synthesis; these new activation methodologies make hitherto infeasible reactions extremely easy and create new opportunities for innovative organic transformations, for both industry and academia. This is the first book that provides a thorough and timely coverage of both inorganic and organic synthetic aspects of bond activation, thus giving a broad overview of the field and allowing both inorganic and organic chemists ready access to the methodologies involved.

Download or read book Organosilicon Chemistry written by Tamejiro Hiyama and published by John Wiley & Sons. This book was released on 2020-02-18 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a unique summary of important catalytic reactions in the presence of silicon A must-have for all synthetic chemists, this book summarizes all of the important developments in the application of organosilicon compounds in organic synthesis and catalysis. Edited by two world leaders in the field, it describes different approaches and covers a broad range of reactions, e.g. catalytic generation of silicon nucleophiles, Si-H Bond activation, C-H bond silylation, silicon-based cross-coupling reactions, and hydrosilylation in the presence of earth-abundant metals. In addition to the topics covered above, Organosilicon Chemistry: Novel Approaches and Reactions features chapters that look at Lewis base activation of silicon Lewis acids, silylenes as ligands in catalysis, and chiral silicon molecules. -The first book about this topic in decades, covering a broad range of reactions -Covers new approaches and novel catalyst systems that have been developed in recent years -Written by well-known, international experts in the areas of organometallic silicon chemistry and organosilicon cross-coupling reactions Organosilicon Chemistry: Novel Approaches and Reactions is an indispensable source of information for synthetic chemists in academia and industry, working in the field of organic synthesis, catalysis, and main-group chemistry.

Download or read book Organometallic and Coordination Chemistry of the Actinides written by Thomas E. Albrecht-Schmitt and published by Springer Science & Business Media. This book was released on 2008-07-22 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents critical reviews of the present position and future trends in modern chemical research concerned with chemical structure and bonding. It contains short and concise reports, each written by the world's renowned experts. Still valid and useful after 5 or 10 years, more information as well as the electronic version of the whole content available at springerlink.com.

Download or read book C X Bond Formation written by Arkadi Vigalok and published by Springer Science & Business Media. This book was released on 2010-07-09 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Kilian Muñiz: Transition Metal Catalyzed Electrophilic Halogenation of C-H bonds in alpha-Position to Carbonyl Groups; Arkadi Vigalok * and Ariela W Kaspi: Late Transition Metal-Mediated Formation of Carbon-Halogen Bonds; Paul Bichler and Jennifer A. Love*: Organometallic Approaches to Carbon-Sulfur Bond Formation; David S. Glueck: Recent Advances in Metal-Catalyzed C-P Bond Formation; Andrei N. Vedernikov: C-O Reductive Elimination from High Valent Pt and Pd Centers; Lukas Hintermann: Recent Developments in Metal-Catalyzed Additions of Oxygen Nucleophiles to Alkenes and Alkynes; Moris S. Eisen: Catalytic C-N, C-O and C-S bond formation promoted by organoactinide complexes.

Download or read book Direct Synthesis of Coordination and Organometallic Compounds written by A.D. Garnovskii and published by Elsevier. This book was released on 1999-08-13 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the interaction between elemental metals and (in)organic ligands in different reaction conditions. Metals could be activated for further reactions as cryosynthesis, electrosynthesis and tribosynthesis, some of them with or without ultrasonic and microwave treatment. The kinetics of metal dissolution in various non-aqueous media is discussed in detail. Many methods are used nowadays to synthesize coordination compounds. Metal complexes are obtained mainly by the direct interaction of the components (the ligands and a source of the complex-forming metal), as a result of ligand and metal exchange, and under the conditions of template synthesis, which also include the method of nascent reagents. In these methods the source of the metal is either its salts or carbonyls. At the same time, it has long been known that coordination compounds may be obtained as a result of direct synthesis from zero-valent metals. Methods for the synthesis of complex compounds under the conditions of gas-phase reactions, oxidative dissolution of zero-valent metals in non-aqueous media, and in the solid phase have been developed. These methods have become the basis of a new field in synthetic chemistry - the direct synthesis of coordination and organometallic compounds from zero-valent metals. Particular aspects of the above problem have been described in a series of reviews and monographs. However, on the whole these main parts of the direct synthesis of metal complexes has not been dealt with in the review and monograph publications on coordination chemistry. So, the main objective of this book is to analyze, discuss and generalize the existing information in the area of direct reactions leading to the coordination and organometallic reactions. Some methods of direct synthesis have been developed in the former USSR (in particular, a lot of works on cryosynthesis, pioneered (1972-1973) and recent works on electrosynthesis) but, in spite of their novelty and/or wide applicability, they are practically unknown elsewhere due to the language barrier. Thus, another objective of this book is to acquaint the readers with the mentioned achievements. Every chapter contains the tables which describe all the reported data on direct reaction between metal atoms, metal particles or bulk metals with (in)organic ligans. There are some illustrations also (for example, the scheme of the reactor for gas-phase reaction between metal small particles and &bgr;-diketones).

Download or read book Organic Synthesis Using Samarium Diiodide written by David J. Procter and published by Royal Society of Chemistry. This book was released on 2010 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samarium diiodide is one of the most important reducing agents available to synthetic organic chemists. The lanthanide(II) reagent acts by single-electron transfer to organic substrates leading to the formation of both radical and/or anionic intermediates. The power of the reagent arises from its versatility - samarium diiodide can be used in processes ranging from functional group conversions to elaborate carbon-carbon bond-forming cyclization sequences that result in a dramatic increase in molecular complexity. In addition, reactions involving samarium diiodide often show high stereoselectivity as samarium ions can coordinate to Lewis basic sites on substrates and can direct the stereochemical course of reactions. The ability to fine-tune the reactivity of the reagent by the use of additives and co-solvents is an additional, attractive feature. Although samarium diiodide is used extensively by organic chemists, there is still a widely held view that the reagent can be difficult to prepare and use. In addition, samarium diiodide can mediate such a wide variety of organic chemistry that potential new users are often overawed by the extensive primary literature on the reagent. The objective of this book is to provide a concise, practical guide to the reagent. Rather than being a comprehensive review of the chemistry of samarium diiodide, this user-friendly book adopts an "an all you need to know" approach to the topic. The international authors are well-known for their work with the reagent and their expertise covers current developments in new reactivity and selectivity, applications in target synthesis, co-solvent and additive effects, coordination chemistry and mechanism. The book includes the best methods for preparing and handling the reagent, how solvents, co-solvents and additives alter reactivity, the basic mechanisms of reactions, common transformations using the reagent, and emerging areas in samarium diiodide chemistry. The authors have distilled the extensive primary literature to allow the reader to quickly grasp an understanding of the reagent and its utility. The illustrative practical procedures help the reader to prepare and use the reagent in the laboratory while references from the recent literature allow readers to pursue their interest in the popular reagent. The book also contains many illustrations and chemical schemes.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Non covalent Interactions in the Synthesis and Design of New Compounds written by Abel M. Maharramov and published by John Wiley & Sons. This book was released on 2016-04-18 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to overview the role of non-covalent interactions, such as hydrogen and halogen bonding, π-π, π-anion and electrostatic interactions, hydrophobic effects and van der Waals forces in the synthesis of organic and inorganic compounds, as well as in design of new crystals and function materials. The proposed book should allow to combine, in a systematic way, recent advances on the application of non-covalent interactions in synthesis and design of new compounds and functional materials with significance in Inorganic, Organic, Coordination, Organometallic, Pharmaceutical, Biological and Material Chemistries. Therefore, it should present a multi- and interdisciplinary character assuring a rather broad scope. We believe it will be of interest to a wide range of academic and research staff concerning the synthesis of new compounds, catalysis and materials. Each chapter will be written by authors who are well known experts in their respective fields.

Download or read book Chemistry of Organo hybrids written by Bernadette Charleux and published by John Wiley & Sons. This book was released on 2015-01-21 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with a one-stop entry into the chemistry of varied hybrids and applications, from a molecular synthetic standpoint • Describes introduction and effect of organic structures on specific support components (carbon-based materials, proteins, metals, and polymers). • Chapters cover hot topics including nanodiamonds, nanocrystals, metal-organic frameworks, peptide bioconjugates, and chemoselective protein modification • Describes analytical techniques, with pros and cons, to validate synthetic strategies • Edited by internationally-recognized chemists from different backgrounds (synthetic polymer chemistry, inorganic surfaces and particles, and synthetic organic chemistry) to pull together diverse perspectives and approaches

Download or read book Organometallic Reactions and Polymerization written by Kohtaro Osakada and published by Springer. This book was released on 2014-07-15 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation provides advanced graduate students and researchers with a structured overview of olefin polymerization. Divided into eight chapters written by international experts, this book covers polymerization using various organotransition-metal catalysts, including early and late transition metal complexes, new trends in olefin oligomerization and related reactions. All authors address the historic and scientific backgrounds of the field as well as current research progress and potential for further research. The complete book is designed to present eight independent lectures and, because all authors are well versed in organometallic chemistry, each is based on a profound understanding of the reactions and structures of organotransition metal complexes. This book is an ideal accompaniment for researchers taking courses in olefin polymerization and also serves as a valuable resource for teachers and lecturers of chemistry when planning and researching material for advanced lecture courses.

Download or read book Synthesis of Organometallic Compounds written by Sanshiro Komiya and published by John Wiley & Sons. This book was released on 1997-05-28 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic Chemistry: Inorganic Chemistry: A Textbook Series This series reflects the breadth of modern research in inorganic chemistry and fulfils the need for advanced texts. The series covers the whole range of inorganic and physical chemistry, solid state chemistry, coordination chemistry, main group chemistry and bioinorganic chemistry. Synthesis of Organometallic Compounds A Practical Guide Edited by Sanshiro Komiya Tokyo University of Agriculture and Technology, Japan. This book describes the concepts of organometallic chemistry and provides an overview of the chemistry of each metal including the synthesis and handling of its important organometallic compounds. Synthesis of Organometallic Compounds: A Practical Guide provides: an excellent introduction to organometallic synthesis detailed synthetic protocols for the most important organometallic syntheses an overview of the reactivity, applications and versatility of organometallic compounds a survey of metals and their organometallic derivatives The purpose of this book is to serve as a practical guide to understanding the general concepts of organometallics for graduate students and scientists who are not necessarily specialists in organometallic chemistry.