Metal-Ligand Bonding

Author: E A Moore,Rob Janes

Publisher: Royal Society of Chemistry

ISBN: 184755945X

Category: Education

Page: 108

View: 1674

To appreciate the chemistry and physical properties of complexes of the transition series, an understanding of metal-ligand interactions applied to complexes of the d-block is needed. Metal Ligand Bonding aims to provide this through an accessible, detailed, non-mathematical approach. Initial chapters detail the crystal-field model, using it to describe the use of magnetic measurements to distinguish complexes with different electronic configurations and geometries. Subsequent chapters look at the molecular orbital theory of transition metal complexes using a pictorial approach. Bonding in octahedral complexes is explored and electronic spectra and magnetic properties are given extensive coverage. The material addressed in this book forms the foundation of undergraduate lecture courses on d-block chemistry and facilitates learning through various key features, including: full colour diagrams; in-text questions with answers; revision exercises and clearly defined learning outcomes to encourage a reflective approach to study; an associated website; and experimental data and observations from everyday life. A basic knowledge of atomic and molecular orbitals as applied to main group elements is assumed.

Metal-ligand Bonding

Author: Rob Janes,Elaine A. Moore

Publisher: Royal Society of Chemistry

ISBN: 9780854049790

Category: Technology & Engineering

Page: 104

View: 5908

A basic knowledge of atomic and molecular orbitals for main group elements is assumed.

Metal-Ligand Interactions: From Atoms, to Clusters, to Surfaces

Author: Dennis R. Salahub,N. Russo

Publisher: Springer Science & Business Media

ISBN: 9401128227

Category: Science

Page: 427

View: 5088

Metal-ligand interactions are currently being studied in different fields, from a variety of points of view, and recent progress has been substantial. Whole new classes of compounds and reactions have been found; an arsenal of physical methods has been developed; mechanistic detail can be ascertained to an increasingly minute degree; and the theory is being developed to handle systems of ever-growing complexity. As usual, such multidisciplinarity leads to great opportunities, coupled with great problems of communication between specialists. It is in its promotion of interactions across these fields that Metal-Ligand Interactions: From Atoms, to Clusters, to Surfaces makes its timely contribution: the tools, both theoretical and experimental, are highly developed, and fundamental questions remain unanswered. The most fundamental of these concerns the nature of the microscopic interactions between metal atoms (clusters, surfaces) and ligands (atoms, molecules, absorbates, reagents, products) and the changes in these interactions during physical and chemical transformation. In Metal-Ligand Interactions, leading experts discuss the following, vital aspects: ab initio theory, semi-empirical theory, density functional theory, complexes and clusters, surfaces, and catalysis.

Metal-Ligand Interactions

Structure and Reactivity

Author: N. Russo,Dennis R. Salahub

Publisher: Springer Science & Business Media

ISBN: 9400901550

Category: Science

Page: 552

View: 636

Metal-Ligand Interactions - Structure and Reactivity emphasizes the experimental determination of structure and dynamics, supported by the theoretical and computational approaches needed to establish the concepts and guide the experiments. Leading experts present masterly surveys of: clusters, inorganic complexes, surfaces, catalysis, ab initio theory, density functional theory,semiempirical methods, and dynamics. Besides the presentations of the fields of study themselves, the papers also bring out those aspects that impinge on, or could benefit from, progress in other disciplines. Refined in the fire of an interactive and stimulating conference, the papers presented here represent the state of the art of current research.

Advances in Metal and Semiconductor Clusters

Metal Ion Solvation and Metal-Ligand Interactions

Author: M.A. Duncan

Publisher: Elsevier

ISBN: 9780080496573

Category: Science

Page: 412

View: 1797

In previous volumes in this series, Advances in Metal and Semiconductor Clusters, the focus has been on atomic clusters of metals, semiconductors and carbon. Fundamental gas phase studies have been surveyed, and most recently scientists have explored new materials which can be produced from clusters or cluster precursors. In this latest volume, the focus shifts to clusters composed primarily of non-metal molecules or atoms which have one or more metal atoms seeded into the cluster as an impurity. These clusters provide model systems for metal ion solvation processes and metal-ligand interactions. Metal-ligand bonding underlies the vast fields of organometallic chemistry, transition metal chemistry and homogeneous catalysis. Catalytic activity, ligand displacement reactions and photochemical activity depend on the specific details of metal-ligand bonding. Likewise, metal ions are ubiquitous in chemistry and biology and weaker electrostatic interactions play a leading role in their function. In solution, metals exist in different charge states depending on the conditions, and the solvation environment strongly influences their chemistry. Many enzymes have metal ions at their active sites, and electrostatic interactions influence the selectivity for metal ion transport through cell membranes. Metal ions (e.g., Mg+, Ca+) are deposited into the earth's atmosphere by meteor ablation, resulting in a rich variety of atmospheric chemistry. Similarly, metal ions ( Mg+) have been observed in planetary atmospheres and in the impact of the comet Shoemaker-Levy 9 on Jupiter. In various circumstances, the electrostatic interactions of metal ions determine the outcome of significant chemistry. Cluster chemistry has made significant contributions to the understanding of these stronger metal ligand interactions and weaker metal ion solvation interactions. In this volume, the authors explore a variety of work in these general areas, where new cluster science techniques in the gas phase have made it possible to synthesize new kinds of complexes with metals and to measure their properties in detail.

Ligand Design in Metal Chemistry

Reactivity and Catalysis

Author: Mark Stradiotto,Rylan J. Lundgren

Publisher: John Wiley & Sons

ISBN: 1118839838

Category: Science

Page: 442

View: 7545

The design of ancillary ligands used to modify the structural and reactivity properties of metal complexes has evolved into a rapidly expanding sub-discipline in inorganic and organometallic chemistry. Ancillary ligand design has figured directly in the discovery of new bonding motifs and stoichiometric reactivity, as well as in the development of new catalytic protocols that have had widespread positive impact on chemical synthesis on benchtop and industrial scales. Ligand Design in Metal Chemistry presents a collection of cutting-edge contributions from leaders in the field of ligand design, encompassing a broad spectrum of ancillary ligand classes and reactivity applications. Topics covered include: Key concepts in ligand design Redox non-innocent ligands Ligands for selective alkene metathesis Ligands in cross-coupling Ligand design in polymerization Ligand design in modern lanthanide chemistry Cooperative metal-ligand reactivity P,N Ligands for enantioselective hydrogenation Spiro-cyclic ligands in asymmetric catalysis This book will be a valuable reference for academic researchers and industry practitioners working in the field of ligand design, as well as those who work in the many areas in which the impact of ancillary ligand design has proven significant, for example synthetic organic chemistry, catalysis, medicinal chemistry, polymer science and materials chemistry.

Essentials of Coordination Chemistry

A Simplified Approach with 3D Visuals

Author: Vasishta Bhatt

Publisher: Academic Press

ISBN: 012803937X

Category: Science

Page: 282

View: 3007

Essentials of Coordination Chemistry: A Simplified Approach with 3D Visuals provides an accessible overview of this key, foundational topic in inorganic chemistry. Thoroughly illustrated within the book and supplemented by online 3D images and videos in full color, this valuable resource covers basic fundamentals before exploring more advanced topics of interest. The work begins with an introduction to the structure, properties, and syntheses of ligands with metal centers, before discussing the variety of isomerism exhibited by coordination compounds, such as structural, geometrical and optical isomerism. As thermodynamics and kinetics provide a gateway to synthesis and reactivity of coordination compounds, the book then describes the determination of stability constants and composition of complexes. Building upon those principles, the resource then explains a wide variety of nucleophilic substitution reactions exhibited by both octahedral and square planar complexes. Finally, the book discusses metal carbonyls and nitrosyls, special classes of compounds that can stabilize zero or even negative formal oxidation states of metal ions. Highlighting preparations, properties, and structures, the text explores the unique type of Metal-Ligand bonding which enable many interesting applications of these compounds. Thoughtfully organized for academic use, Essentials of Coordination Chemistry: A Simplified Approach with 3D Visuals encourages interactive learning. Advanced undergraduate and graduate students, as well as researchers requiring a full overview and visual understanding of coordination chemistry, will find this book invaluable. Includes valuable visual content through 3D images and videos in full color, available online Provides a valuable introduction to the study of organic and inorganic ligands with metal centers Discusses advanced topics including metal carbonyls and nitrosyls

Mössbauer Spectroscopy Applied to Inorganic Chemistry

Author: G.J Long

Publisher: Springer Science & Business Media

ISBN: 9780306416477

Category: Science

Page: 668

View: 9812

When presented with a new compound or material, the inorganic chemist will usually have several questions in mind about its composition and structure. Although a simple elemental analysis may answer many questions about its composition, the chemist will still have questions about its structure, and, ifthe material contains a metal atom, he will often want to know its oxidation state, coordination number and geometry. Further, at an increasingly frequent rate, the chemist may need details of the spin state, magnetic and perhaps dynamic properties of the material. If the investigator is fortunate, the material or compound may contain an ele ment such as iron, tin, antimony, iodine, gold, or one of several of the rare earth metals which are amenable to study by the Mossbauer effect. Often the Mossbauer effect can, sometimes with quite simple experiments, provide the answers to all of these questions. The goal of this book is to illustrate the effectiveness of the Mossbauer effect in providing the answers to the many questions that arise in char acterizing new materials and, indeed, in studying known materials in more detail. Several chapters introduce the effect to the novice and provide details about the various hyperfine interactions that are the "bread and butter" of the Mossbauer spectroscopist. Three chapters deal specifically with the experimental aspects of the technique and the increasing impor tance of sophisticated computer analysis of the resulting data.

Inorganic Aspects of Biological and Organic Chemistry

Author: Robert Hanzlik

Publisher: Elsevier

ISBN: 0323151167

Category: Science

Page: 420

View: 5231

Inorganic Aspects of Biological and Organic Chemistry investigates the inorganic aspects of biological and organic chemistry. Topics include the inorganic chemistry of group Ia and IIa metals; complexes of Ia and IIa cations in organic and biological chemistry; atomic structure and structure-activity correlations; and bonding in ligands and metal complexes. Ligand exchange reactions and factors in complex stability are also discussed. Comprised of 12 chapters, this book begins with an overview of some of the important roles of metals in biological and organic chemistry, followed by an analysis of the inorganic chemistry of group Ia and IIa metals. Complexes of Ia and IIa cations in organic and biological chemistry are then described, together with atomic structure and structure-activity correlations. Subsequent chapters deal with bonding in ligands and metal complexes; ligand exchange reactions and factors in complex stability; redox potentials and processes; and the influence of metal ions on equilibria. The book also considers catalysis by metal ions, metal complexes, and metalloenzymes before concluding with a chapter that examines the reactions of ligands in organometallic complexes. This monograph is written for teachers, students, and practitioners of organic, biological, and inorganic chemistry.

Electronic Absorption Spectroscopy and Related Techniques

Author: D. N. Sathyanarayana

Publisher: Universities Press

ISBN: 9788173713712

Category: Absorption spectra

Page: 532

View: 9796

This book provides a conceptual and experimental basis for the interpretation of electronic absorption spectroscopy and related techniques. The basic theories, instrumentation and interpretation of the spectra of organic and coordination compounds for structural studies are presented step-by-step, in an easily understandable style. related topics of emission spectroscopes are covered as well.

Structure and Bonding

Author: Jack Barrett

Publisher: Royal Society of Chemistry

ISBN: 9780854046478

Category: Science

Page: 181

View: 3530

This book explains in non-mathematical terms where possible, the factors that govern covalent bond formation, the lengths and strengths of bonds and molecular shapes.

Metals and Life

Author: Eleanor Crabb,Elaine Moore

Publisher: N.A

ISBN: 9781849730594

Category: Science

Page: 226

View: 7467

An introduction to the metals essential to life and ligands of biological importance including the uptake of metals, their transport and storage.