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This book presents the fundamentals of bonding in polyoxometalates and related oxides based on classical bonding concepts and the bond valence model. The in-depth treatment includes a revision of the procedure for the determination of the parameters of bond length-bond valence functions, the application of the bond valence model to polyoxometalates and related oxides, and the explanation of the distribution of the bond valences, and hence of the bond lengths, over the metal-oxygen bond and of the ionic charge on the oxygen atoms. Numerous tables and figures underline and illuminate the results. The principal author is a leader in the field of polyoxometalate chemistry. This work provides for the first time a comprehensive analysis of the structure and bonding in polyoxometalates, based on classical chemical concepts and the bond valence approach, and as such is a valuable resource for chemists, physicists and material scientists working in the field.
1. D.M.P. Mingos, J.E. McGrady, A. L. Rohl Moments of Inertia in Cluster and Coordination Compounds 2. M. Drillon, J. Darriet Progress in Polymetallic Exchange-Coupled Systems, Some Examples in Inorganic Chemistry 3. P. Zanello Stereochemical Aspects Associated with the Redox Behaviour of Heterometal Carbonyl Clusters 4. R. G. Denning Electronic Structure and Bonding in Actinyl Ions 5. M. Evain, R. Brec ANew Approach to Structural Description of Complex Polyhedra Containing Polychalcogenide Anions 6. E. Brese, M. O'Keeffe Crystal Chemistry of Inorganic Nitrides
The liquid crystalline state may be identified as a distinct and unique state of matter which is characterised by properties which resemble those of both solids and liquids. It was first recognised in the middle of the last century through the study of nerve myelin and derivatives of cholesterol. The research in the area really gathered momentum, however, when as a result of the pioneering work of Gray in the early 1970's organic compounds exhibiting liquid crystalline properties were shown to be suitable to form the basis of display devices in the electronic products. The study of liquid crystals is truly multidisciplinary and has attached the attention of physicists, biologists, chemists, mathematicians and electronics engineers. It is therefore impossible to cover all these aspects fully in two small volumes and therefore it was decided in view of the overall title of the series to concentrate on the structural and bonding aspects of the subject. The Chapters presented in these two volumes have been organised to cover the following fundamental aspects of the subiect. The calculation of the structures of liquid crystals, an account of their dynamical properties and a discussion of computer simulations of liquid crystalline phases formed by Gay Berne mesogens. The relationships between molecular conformation and packing are analysed in some detail. The crystal structures of liquid crystal mesogens and the importance of their X ray scattering properties for characterisational purposes are discussed.
This book presents the most comprehensive analysis of bonding in polyoxometalates and related oxides based on classical bonding concepts and the bond valence model. Numerous tables and figures underline and illuminate the results, making it a valuable resource.
It is 25 years since the seminal papers describing the relationships between the skeletal geometrics and closed shell electronic requirements of metal clusters were originally published. The electron counting rules which developed from these papers, are now to be found in all undergraduate inorganic textbooks. This volume provides a contemporary account of recent applications of the methodology and the mathematical foundations of the rules. In addition it describes how it is possible to accomondate acception to the rules within a wider framework. The authors are the foremost authorities in the field and give a broad introduction to the area.
The liquid crystalline state may be identified as a distinct and unique state of matter which is characterised by properties which resembles those of both solids and liquids. It was first recognised in the middle of the last century through the study of nerve myelin and derivatives of cholesterol. The research in the area really gathered momentum, however, when as a result of the pioneering work of Gray in the early 1970's organic compounds showing liquid crystalline properties were shown to be suitable to form the basis of display devices in the electronic products. The study of liquid crystals is truly multidisciplinary and has attached the attention of physicists, biologists, chemists, mathematicians and electronics engineers. It is therefore impossible to cover all these aspects fully in two small volumes and therefore it was decided in view of the overall title of the series to concentrate on the structural and bonding aspects of the subject. The Chapters presented in these two volumes have been organised to cover the following fundamental aspects of the subject. The calculation of the structures of liquid crystals, an account of their dynamical properties and a discussion of computer simulations of liquid crystalline phases formed by Gay Berne mesogens. The relationships between molecular conformation and packing are analysed in some detail. The crystal structures of liquid crystal mesogens and the importance of their X ray scattering properties for characterisational purposes are discussed.
This book is illustrated throughout, and there are notes for further reading for students who wish to gain more insight into topics of interest. As with Essentials of Inorganic Chemistry 1, its popular companion volume for first year undergraduates, this text will be invaluable to second, third and fourth year chemists for looking up unfamiliar subject areas and for revision of topics in preparation for examinations.
Secondary students and first year undergraduate students in chemistry often find the terminology of the subject bewildering, and basic concepts difficult to summarise. This Primer provides an alphabetical listing of concepts encountered up to a first year undergraduate inorganic chemistry course. Each entry provides more information than can be found in current chemistry dictionaries, and is written in accessible, student-friendly style. Whether using the Primer for exam revision, or for quick explanations of unfamiliar topics, every chemistry student should have a copy at their desks.
The growth of inorganic chemistry during the last 50 years has made it difficult for the student to assimilate all the factual information available. This book is designed to help by showing how a chemist uses the Periodic Table to organize and process this mass of information. It includes a detailed discussion of the important horizontal, vertical, and diagonal trends in the properties of the atoms of the elements and their compounds. These basic principles can then be applied to more detailed problems in modern inorganic chemistry.
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