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| Author | : Hon-man Lee |
| Publisher | : |
| Total Pages | : 314 |
| Release | : 1997 |
| Genre | : Ligands |
| ISBN | : |
| Author | : Yiu-Tung Wong |
| Publisher | : |
| Total Pages | : 616 |
| Release | : 2002 |
| Genre | : Catalysis |
| ISBN | : |
| Author | : Patrick J. Walsh |
| Publisher | : University Science Books |
| Total Pages | : 692 |
| Release | : 2009-01-02 |
| Genre | : Science |
| ISBN | : 9781891389542 |
This work describes the essential aspects of enantioselective catalysis, with chapters organised by concept rather than by reaction type. Each concept is supported by examples to give the reader broad exposure to a wide range of catalysts, reactions and reaction mechanisms.
| Author | : Eva Neumann |
| Publisher | : Cuvillier Verlag |
| Total Pages | : 244 |
| Release | : 2006-02-15 |
| Genre | : Science |
| ISBN | : 3736918011 |
The term ligand [latin, ligare = bind] has its origin in coordination chemistry. It denotes a molecule that is able to bind to a metal center in most cases via one or several free electron pairs.[1] Ligands can be described by the number of electron-pair donor atoms as monodentate, bidentate, tridentate etc. ligands. The latter are also called chelating ligands [greek, chele = (crab’s) claw]. A typical classification of ligands is according to their electronic properties. They serve either as a σ-donating, σ-donating/π-accepting, or σ,π-donating/π-accepting ligands.[2] A more practical, often encountered approach is the classification of ligands according to their donor atoms, especially when larger molecules and molecules containing heteroatoms are regarded (compare 1.2). Coordination chemistry was already established in the 19th century. In 1893 Alfred Werner suggested an octahedral arrangement of ligands coordinated to a central metal ion for many compounds. This explained, for example, the appearance and reactivity of four different cobalt(III) complexes (Figure 1.1), when CoCl2 is dissolved in aqueous ammonia and then oxidized by air to the +3 oxidation state. The formulas of these complexes can be written as depicted in Figure 1.1. Werner’s work was rewarded with the Nobel prize in 1913.[3]
| Author | : Junliang Zhang |
| Publisher | : Elsevier |
| Total Pages | : 322 |
| Release | : 2023-05-27 |
| Genre | : Science |
| ISBN | : 0323852262 |
Chiral Phosphorous Based Ligands in Earth-Abundant Transition Metal Catalysis summarizes the most significant progress in the field of chiral phosphine ligand chemistry and a broad range of earth-abundant transition metal/chiral phosphine ligand-catalyzed enantioselective transformations. The book provides an authoritative and in-depth understanding of important topics about asymmetric catalysis based on earth-abundant transition metals/chiral phosphine ligands, making it ideal for organic chemistry researchers working in the field of asymmetric catalysis, synthetic methodologies and total synthesis.The development of new chiral phosphine ligands to achieve precise stereo control in many earth-abundant transition metal-catalyzed reactions is a very important field in organic synthesis, materials science and medicinal chemistry. The asymmetric synthesis promoted by transition metal/chiral phosphine ligands provides one of the most ideal ways to produce valuable optically active chemicals. Includes a discussion of state-of-the-art asymmetric organic reactions mediated by earth-abundant transition metals and chiral phosphine ligands Features the progress and the prospect of chiral phosphine ligands in asymmetric transition metal catalysis Covers the asymmetric reactivity modes of earth-abundant transition metals and phosphine ligands
| Author | : B. S. Nicholls |
| Publisher | : |
| Total Pages | : |
| Release | : 1983 |
| Genre | : |
| ISBN | : |
| Author | : Tsuneo Imamoto |
| Publisher | : |
| Total Pages | : 184 |
| Release | : 1994 |
| Genre | : Science |
| ISBN | : |
Organic synthesis with lanthanides has experienced enormous growth in the last ten years. Numerous synthetic reactions have been explored by the use of lanthanide reagents, and some of these have become indispensablein modern organic synthesis. This book describes the remarkable scope and potential of these reagents, addressing this rapidly growing area from a practical point-of-view. The author has summarized synthetically useful and novel organic transformations, emphasizing the characteristic properties of lanthanide reagents. These transformations are concisely and skillfully presented in many schemes and tables, with actual illustrative preparations. The coverage includes the use of lanthanide metals, the powerful divalent reagents such as samarium (II) iodide, the key trivalent reagents and their particular role as catalysts in selective reductions and cycloadditions, and the tetravalent lanthanides as oxidants. Describes the remarkable scope and potential of lanthanide reagents from a practical point-of-view Presents actual experimental procedures Provides a concise presentation of useful and novel organic transformations in table format
| Author | : Th. Weber |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 376 |
| Release | : 1998-09-30 |
| Genre | : Science |
| ISBN | : 9780792352556 |
Hydrotreating catalysis with transition metal sulphides is one of the most important areas of industrial heterogeneous catalysis. The present book deals with the chemical and catalytic aspects of transition metal sulphides, focusing on their use in hydrotreating catalysis. The book¿s 12 chapters present reviews of solid-state, coordination and organometallic chemistry, surface science and spectroscopic studies, quantum chemical calculations, catalytic studies with model and real catalysts, as well as refinery processes. A presentation of state-of-the-art background to pertinent work in the field. Can be used as an introduction to the chemical and catalytic properties of transition metal sulphides as well as an advanced level reference.
| Author | : Hoi-Yan Leung |
| Publisher | : |
| Total Pages | : 320 |
| Release | : 2004 |
| Genre | : Catalysis |
| ISBN | : |
| Author | : Maravanji S. Balakrishna |
| Publisher | : Elsevier |
| Total Pages | : 442 |
| Release | : 2019-04-25 |
| Genre | : Science |
| ISBN | : 0128156945 |
Copper(I) Complexes of Phosphines, Functionalized Phosphines and Phosphorus Heterocycles is a comprehensive guide to one of the most widely used and extensively studied metals: copper. The numerous practical applications of copper compounds are discussed, including homogeneous and heterogeneous catalysis and their use as fungicides, pesticides, pigments for paints, resins and glasses, and in high-temperature superconductors. The remarkable structural flexibility of simple copper(I) complexes, such as cuprous halides is covered, including numerous structural motifs that, when combined with different ligand systems, exhibit linear, trigonal planar or tetrahedral geometries. This work is an essential reference for inorganic and coordination chemists, as well as researchers working on catalysis, anticancer reagents, luminescence, fluorescence and photophysical aspects. Discusses the properties of copper and similarities to noble metals, such as their corrosion resistance, high thermal and electrical conductivity and rich coordination chemistry Includes the copper(I) coordination chemistry of tertiary phosphines, bisphosphines and phosphines containing other donor atoms and their potential application in catalysis, biosystems and photochemical areas Features a discussion of the rich photochemistry exhibited by some mixed-ligand copper(I) complexes (phosphines with heteroaromatic ligands) which can exhibit coprophilic interactions, photoluminescence and thermochromic properties
