Download or read book Synthesis Characterization and Immoblization of Solvent Ligated Complexes and Their Catalytic Activity written by Ahmed Kamal Hijazi and published by . This book was released on 2006 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Immobilization and Applications of Solvent Stabilized Transition Metal Cations with Weakly Coordinating Anions written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solvent ligated metal complexes of the type [M(CH3CN)6][A2] (M = Cr, Fe, Co, Ni, Cu and Zn) (A = [B(C6F5)4]-) has been synthesised, characterized and applied for Isobutene polymerization. [Cu(CH3CN)6][A2] (A = [B(C6F5)4]-) and [B(C6H3m-(CF3)2)4]) complexes has been synthesized, characterized, immobilized on P4VP polymer support and the catalytic activity for cyclopropanation of olefins has been tested. [Cu(CH3CN)6][B(C6F5)4] complex immobilized on modified MCM-41 surface and found to be active for cyclopropanation of olefins. [Cu(CH3CN)6][B(C6H3m-(CF3)2)4] complex has been grafted on the surface of aminosilane modified SBA-15 and the catalytic activity for aldehyde olefination was measured. All the heterogenized complexes can be reused and found to be active for several runs with relatively high activity.
Download or read book Synthesis and characterization of solvent ligated transition metal complexes containing weakly coordinating anions and their catalytic reactivity written by Yanmei Zhang and published by . This book was released on 2004 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Nanoparticles written by Daniel L. Fedlheim and published by CRC Press. This book was released on 2001-10-26 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art reference, Metal Nanoparticles offers the latest research on the synthesis, characterization, and applications of nanoparticles. Following an introduction of structural, optical, electronic, and electrochemical properties of nanoparticles, the book elaborates on nanoclusters, hyper-Raleigh scattering, nanoarrays, and several applications including single electron devices, chemical sensors, biomolecule sensors, and DNA detection. The text emphasizes how size, shape, and surface chemistry affect particle performance throughout. Topics include synthesis and formation of nanoclusters, nanosphere lithography, modeling of nanoparticle optical properties, and biomolecule sensors.
Download or read book Synthesis and Characterization of Metal Metal Multiply Bonded Complexes and Catalytic Applications of Solvent Stabilized Transition Metal Complexes for Polymerization of Olefins written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of dimolybdenum quadruply bonded complexes and dirhodium compounds were synthesized and characterized. Additionally a variety of solvent stabilized transition metal complexes were explored as initiators for the polymerization of olefins. The polymerization of cyclopentadiene and methylcyclopentadiene was employed as standard reaction. The results revealed that the metal-metal bond plays no important role in the activity of the examined bimetallic complexes and that the mononuclear complexes show excellent activity, which is in good correlation to their predicted ligand field stabilization energy as a function of the number of d electrons available. Furthermore, the analyses of the MCM-41-supported dimolybdenum species indicated that the quadruple bond is retained and their activity is held in the heterogenization process.
Download or read book Synthesis Characterization and Reactivity of Transition Metal Complexes Supported by Heteropolydentate Ligation written by Adam Ruddy and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization And Catalytic Activity Of Ba II Complexes written by Rohit Patel and published by LAP Lambert Academic Publishing. This book was released on 2015-10-25 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to explain the formulae and structures of the complex compounds or complexes, formed by transition metal salts with molecular species such as ammonia, Werner coined the terms primary valence and secondary valence.. These concepts remain valid today except that the term oxidation state has replaced 'primary valence' and the term coordination number has replaced 'secondary valence' Werner had recognized that a transition metal salt could form a complex compound in which the metal ion became bonded to a number of groups which need not necessarily be the counter anions originally present in the salt. The orientations in space of these metal-bond groups would lead to the complex having a particular geometric structure. Coordination compound has always been a challenge to the inorganic chemistry. The scientists of coordination of compound are Kooser, Lewis, Sidgwick, etc.
Download or read book Synthesis and Characterization of Metal Metal Multiply Bonded Complexes and Catalytic Applications of Solvent Stabilized Transition Metal Complexes for Polymerization of Olefins written by Guofang Zhang and published by . This book was released on 2001 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Immobilization of Solvent Stabilized Transition Metal Complexes with Weakly Coordinating Counter Anions and Their Catalytic Applications written by Syukri and published by . This book was released on 2007 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Privileged Pincer Metal Platform Coordination Chemistry Applications written by Gerard van Koten and published by Springer. This book was released on 2015-08-27 with total page 381 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 Organosulfur Chemistry in Asymmetric Synthesis written by Takeshi Toru and published by John Wiley & Sons. This book was released on 2008-09-08 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this first book to gather the information on this hot topic otherwise widely spread throughout the literature, experienced editors and top international authors cover everything the reader needs -- from the synthesis of chiral organosulfur compounds to applications and catalysis: * Asymmetric synthesis of chiral sulfinates and sulfoxides * Synthesis and use of chiral dithioacetal derivatives, ylids, chiral sulfoximines and sulfinamides * Use of chiral sulfoxides as ligands in catalysis * Asymmetric reactions of alpha-sulfenyl, alpha-sulfinyl and alpha-sulfonyl carbanions. As a result, readers will be able to improve their own performance in asymmetric synthesis.
Download or read book Mechanochemical Organic Synthesis written by Davor Margetic and published by Elsevier. This book was released on 2016-04-23 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanochemical Organic Synthesis is a comprehensive reference that not only synthesizes the current literature but also offers practical protocols that industrial and academic scientists can immediately put to use in their daily work. Increasing interest in green chemistry has led to the development of numerous environmentally-friendly methodologies for the synthesis of organic molecules of interest. Amongst the green methodologies drawing attention, mechanochemistry is emerging as a promising method to circumvent the use of toxic solvents and reagents as well as to increase energy efficiency. The development of synthetic strategies that require less, or the minimal, amount of energy to carry out a specific reaction with optimum productivity is of vital importance for large-scale industrial production. Experimental procedures at room temperature are the mildest reaction conditions (essentially required for many temperature-sensitive organic substrates as a key step in multi-step sequence reactions) and are the core of mechanochemical organic synthesis. This green synthetic method is now emerging in a very progressive manner and until now, there is no book that reviews the recent developments in this area. Features cutting-edge research in the field of mechanochemical organic synthesis for more sustainable reactions Integrates advances in green chemistry research into industrial applications and process development Focuses on designing techniques in organic synthesis directed toward mild reaction conditions Includes global coverage of mechanochemical synthetic protocols for the generation of organic compounds
Download or read book Periodic Mesoporous Organosilicas written by Chang-Sik Ha and published by Springer. This book was released on 2018-11-07 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the fundamental properties, preparation routes and applications of a novel class of organic–inorganic nanocomposites known as periodic mesoporous organosilicas (PMOs). Mesoporous silicas are amorphous inorganic materials which have silicon and oxygen atoms in their framework with pore size ranging from 2 to 50 nm. They can be synthesized from surfactants as templates for the polycondensation of various silicon sources such as tetraalkoxysilane. In general, mesoporous silica materials possess high surface areas, tunable pore diameters, high pore volumes and well uniformly organized porosity. The stable chemical property and the variable ability for chemical modification makes them ideal for many applications such as drug carrier, sensor, separation, catalyst, and adsorbent. Among such mesoporous silicas, in 1999, three groups in Canada, Germany, and Japan independently developed a novel class of organic–inorganic nanocomposites known as periodic mesoporous organosilicas (PMOs). The organic functional groups in the frameworks of these solids allow tuning of their surface properties and modification of the bulk properties of the material. The book discusses the properties of PMOs, their preparation, different functionalities and morphology, before going on to applications in fields such as catalysis, drug delivery, sensing, optics, electronic devices, environmental applications (gas sensing and gas adsorption), biomolecule adsorption and chromatography. The book provides fundamental understanding of PMOs and their advanced applications for general materials chemists and is an excellent guide to these promising novel materials for graduate students majoring in chemical engineering, chemistry, polymer science and materials science and engineering.
Download or read book Aqueous Organometallic Catalysis written by Ferenc Joo and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 20 years aqueous organometallic catalysis has found applications in small- scale organic synthesis in the laboratory, as well as in the industrial production of chemicals with a combined output close to one million tons per year. Aqueous/organic two-phase reactions allow easy product-catalyst separation and full catalyst recovery which mean clear benefits not only in economic but also in environmental and green chemistry contexts. Instead of putting together a series of expert reviews of specialized fields, this book attempts to give a comprehensive yet comprehensible description of the various catalytic transformations in aqueous systems as seen by an author who has been working on aqueous organometallic catalysis since its origin. Emphasis is put on the discussion of differences between related non-aqueous and aqueous processes due to the presence of water. The book will be of interest to experts and students working in catalysis, inorganic chemistry or organic synthesis, and may serve as a basis for advanced courses.
Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.
Download or read book Vanadium Catalysis written by Manas Sutradhar and published by Royal Society of Chemistry. This book was released on 2020-11-05 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium is one of the more abundant elements in the Earth’s crust and exhibits a wide range of oxidation states in its compounds making it potentially a more sustainable and more economical choice as a catalyst than the noble metals. A wide variety of reactions have been found to be catalysed by homogeneous, supported and heterogeneous vanadium complexes and the number of applications is growing fast. Bringing together the research on the catalytic uses of this element into one essential resource, including theoretical perspectives on proposed mechanisms for vanadium catalysis and an overview of its relevance in biological processes, this book is a useful reference for industrial and academic chemists alike.
Download or read book Activation and Catalytic Reactions of Saturated Hydrocarbons in the Presence of Metal Complexes written by A.E. Shilov and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: hemistry is the science about breaking and forming of bonds between atoms. One of the most important processes for organic chemistry is breaking bonds C–H, as well as C–C in various compounds, and primarily, in hydrocarbons. Among hydrocarbons, saturated hydrocarbons, alkanes (methane, ethane, propane, hexane etc. ), are especially attractive as substrates for chemical transformations. This is because, on the one hand, alkanes are the main constituents of oil and natural gas, and consequently are the principal feedstocks for chemical industry. On the other hand, these substances are known to be the less reactive organic compounds. Saturated hydrocarbons may be called the “noble gases of organic chemistry” and, if so, the first representative of their family – methane – may be compared with extremely inert helium. As in all comparisons, this parallel between noble gases and alkanes is not fully accurate. Indeed the transformations of alkanes, including methane, have been known for a long time. These reactions involve the interaction with molecular oxygen from air (burning – the main source of energy!), as well as some mutual interconversions of saturated and unsaturated hydrocarbons. However, all these transformations occur at elevated temperatures (higher than 300–500 °C) and are usually characterized by a lack of selectivity. The conversion of alkanes into carbon dioxide and water during burning is an extremely valuable process – but not from a chemist viewpoint.
