Search Results: metal-ligand-bonding

Metal-Ligand Bonding

Author: E A Moore,Rob Janes

Publisher: Royal Society of Chemistry

ISBN: 184755945X

Category: Education

Page: 108

View: 1553

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 Interactions in Chemistry, Physics and Biology

Author: N. Russo,Dennis R. Salahub

Publisher: Springer Science & Business Media

ISBN: 9401142459

Category: Science

Page: 452

View: 2049

Proceedings of the NATO Advanced Study Institute, held in Cetraro (CS) Italy, from 1-12 September 1998

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: 4423

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.

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: 4009

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: 4799

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.

The Chemical Bond: Chemical Bonding Across the Periodic Table

Author: Gernot Frenking,Sason Shaik

Publisher: John Wiley & Sons

ISBN: 3527333150

Category: Science

Page: 566

View: 4565

Thermochemistry and Its Applications to Chemical and Biochemical Systems

The Thermochemistry of Molecules, Ionic Species and Free Radicals in Relation to the Understanding of Chemical and Biochemical Systems

Author: M.A.V. Ribeiro Da Silva

Publisher: Springer Science & Business Media

ISBN: 9400963122

Category: Science

Page: 845

View: 3250

Proceedings of the NATO Advanced Study Institute on Thermochemistry Today and Its Role in the Immediate Future, Viano do Castelo, Portugal, July 5-15, 1982

Mössbauer Spectroscopy Applied to Inorganic Chemistry

Author: G.J Long

Publisher: Springer Science & Business Media

ISBN: 9780306416477

Category: Science

Page: 668

View: 3788

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.

Metal-Ligand Interactions

Author: Malgorzata Witko

Publisher: Springer Science & Business Media

ISBN: 9781402014949

Category: Ligands

Page: 552

View: 4626

Electronic Absorption Spectroscopy and Related Techniques

Author: D. N. Sathyanarayana

Publisher: Universities Press

ISBN: 9788173713712

Category: Absorption spectra

Page: 532

View: 7111

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.

Organometallic Chemistry

Author: M. Green

Publisher: Royal Society of Chemistry

ISBN: 0854043438

Category: Reference

Page: 504

View: 7498

This Specialist Periodical Report aims to reflect the growing interest in the potential of organometallic chemistry.

Organotransition Metal Chemistry

Author: Anthony F. Hill

Publisher: Royal Society of Chemistry

ISBN: 9780854046225

Category: Education

Page: 185

View: 8447

This book aims to introduce undergraduates to the utility of organotransition metal chemistry, a discipline of importance to scientists in a variety of industry sectors.

Fundamentals of Inorganic Chemistry

An Introductory Text for Degree Studies

Author: J Barrett,M A Malati

Publisher: Horwood Publishing

ISBN: 9781898563389

Category: Science

Page: 304

View: 8693

With Fundamentals of Inorganic Chemistry, two well-known teachers combine their experience to present an introductory text for first and second year undergraduates.

Compounds of the Transition Elements Involving Metal-Metal Bonds

Pergamon Texts in Inorganic Chemistry

Author: D. L. Kepert,K. Vrieze

Publisher: Elsevier

ISBN: 1483151743

Category: Science

Page: 175

View: 7571

Compounds of the Transition Elements Involving Metal-Metal Bonds deals with compounds of the transition elements involving metal-metal bonds, with particular emphasis on metal-metal bonds in coordination compounds and organometallic complexes, halides, and oxides. Factors that influence the formation, stability, and properties of such compounds, as well as their application in various fields of chemistry and physics, are discussed. This book is divided into four sections and begins with a classification of metal-metal bonds and some of the physical and chemical methods used to study them, including X-ray crystallography, magnetic susceptibility and electron spin resonance, nuclear spin resonance, Mössbauer measurements, infrared and Raman spectroscopy, visible and ultraviolet spectroscopy, mass spectrometry, electrical conductivity, electrochemical methods, and chemical reactivity. Factors influencing the strength of metal-metal bonds in metals and compounds are also examined. The remaining sections deal with metal-metal bonds in coordination compounds and organometallic complexes, halides, and oxides. This monograph will be a useful resource for inorganic chemists.

The Stability of Minerals

Author: G.D. Price,N.L. Ross

Publisher: Springer Science & Business Media

ISBN: 0585275785

Category: Science

Page: 368

View: 8623

30% discount for members of The Mineralogical Society of Britain and Ireland This volume addresses the fundamental factors that underlie our understanding of mineral behaviour and crystal chemistry - a timely topic given current advances in research into the complex behaviour of solids and supercomputing.

Fundamental QSARs for Metal Ions

Author: John D. Walker,Michael C. Newman,Monica Enache

Publisher: CRC Press

ISBN: 142008433X

Category: Science

Page: 302

View: 6025

Fundamental QSARs for Metal Ions describes the basic and essential applications of quantitative structure–activity relationships (QSARs) for regulatory or industrial scientists who need to predict metal ion bioactivity. It includes 194 QSARs that have been used to predict metal ion toxicity and 86 QSARs that have been used to predict metal ion bioconcentration, biosorption, and binding. It is an excellent sourcebook for academic, industrial, and government scientists and policy makers, and provides a wealth of information on the biological and chemical activities of metal ions as they impact health and the environment. Fundamental QSARs for Metal Ions was designed for regulatory and regulated organizations that need to use QSARs to predict metal ion bioactivity, as they now do for organic chemicals. It has the potential to eliminate resources to test the toxicity of metal ions or to promulgate regulations that require toxicity testing of metal ions because the book illustrates how to construct QSARs to predict metal ion toxicity. In addition, the book: Provides a historical perspective and introduction to developing QSARs for metal ions Explains the electronic structures and atomic parameters of metals essential to understanding differences in chemical properties that influence cation toxicity, bioconcentration, biosorption, and binding Describes the chemical properties of metals that are used to develop QSARs for metal ions Illustrates the descriptors needed to develop metal ion-ligand binding QSARs Discusses 280 QSARs for metal ions Explains the differences between QSARs for metal ions and Biotic Ligand Models Lists the regulatory limits of metals and provides examples of regulatory applications Illustrates how to construct QSARs for metal ions Dr. John D. Walker is the winner of the 2013 SETAC Government Service Award.

Metal-Ligand Multiple Bonds

The Chemistry of Transition Metal Complexes Containing Oxo, Nitrido, Imido, Alkylidene, Or Alkylidyne Ligands

Author: William A. Nugent,James M. Mayer

Publisher: Wiley-Interscience

ISBN: N.A

Category: Science

Page: 334

View: 9049

The only comprehensive one-volume text/reference on metal-ligand multiple bonds. Stresses the unified nature of the field and includes handy new tabulations of data. The flow within each subtopic is oxygen to nitrogen to carbon. Coverage is up-to-date--virtually every subtopic leads to interesting questions for future research. Presents information otherwise scattered through hundreds of publications.

symmetry In Coordination Chemistry

Author: John P. Jr. Fackler

Publisher: Elsevier

ISBN: 0323161006

Category: Science

Page: 152

View: 5073

Symmetry in Coordination Chemistry provides a comprehensive discussion of molecular symmetry. It attempts to bridge the gap between the elementary ideas of bonding and structure learned by freshmen, and those more sophisticated concepts used by the practicing chemist. The book emphasizes the use of symmetry in describing the bonding and structure of transition metal coordination compounds. The book begins with a review of basic concepts such as molecular symmetry, coordination numbers, symmetry classification, and point group symmetry. This is followed by separate chapters on the electronic, atomic, and magnetic properties of d-block transition elements; the representation of orbital symmetries in a manner consistent with the point group of a molecule. Also included are discussions of vibrational symmetry; crystal field theory, ligand field theory, and molecular orbital theory; and the chemistry of a select few d-block transition elements and their compounds. This book is meant to supplement the traditional course work of junior-senior inorganic students. It is for them that the problems and examples have been chosen.

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