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Author: Sam Stuart Publisher: Elsevier ISBN: 1483284468 Category : Science Languages : en Pages : 350
Book Description
Organosilicon Chemistry provides information pertinent to the fundamental aspects and application of organosilicon chemistry. This book discusses the exact manner and extent of d-orbital involvement in organosilicon compounds in ground, electronic, and transition excited states. Organized into two parts encompassing 21 chapters, this book begins with an overview of preparing stable organosiliconium ions. This text then discusses the use of fused salts as reaction media in the preparative chemistry. Other chapters consider a detailed investigation on the molecular association and volatility of alkoxides of group (IV) elements. This book discusses as well the reaction between dimethyldichlorosilane and ethylene glycon, which has been shown to produce a dimeric ten-membered ring compound. The final chapter deals with the results of the investigations concerning the properties of the contact mass and of the non-volatile silicon-free products, which are produced in the direct synthesis of phenylhalogenosilanes. This book is a valuable resource for chemists and research workers.
Author: Sam Stuart Publisher: Elsevier ISBN: 1483284468 Category : Science Languages : en Pages : 350
Book Description
Organosilicon Chemistry provides information pertinent to the fundamental aspects and application of organosilicon chemistry. This book discusses the exact manner and extent of d-orbital involvement in organosilicon compounds in ground, electronic, and transition excited states. Organized into two parts encompassing 21 chapters, this book begins with an overview of preparing stable organosiliconium ions. This text then discusses the use of fused salts as reaction media in the preparative chemistry. Other chapters consider a detailed investigation on the molecular association and volatility of alkoxides of group (IV) elements. This book discusses as well the reaction between dimethyldichlorosilane and ethylene glycon, which has been shown to produce a dimeric ten-membered ring compound. The final chapter deals with the results of the investigations concerning the properties of the contact mass and of the non-volatile silicon-free products, which are produced in the direct synthesis of phenylhalogenosilanes. This book is a valuable resource for chemists and research workers.
Author: Michel Nardin Publisher: CRC Press ISBN: 1420016008 Category : Science Languages : en Pages : 685
Book Description
New analytical methods have provided further insight into the structure, surface characteristics, and chemistries of increasingly small particles. However, current literature offers information on only a limited number of powders being investigated. Written by renowned scientists in the field, Powders and Fibers: Interfacial Science and Application
Author: J. Lascombe Publisher: Springer Science & Business Media ISBN: 9401021775 Category : Science Languages : en Pages : 645
Book Description
When, in my capacity as President of the Societe de Chimie physique, I opened the 24th Annual Meeting of this Society, devoted this year to 'molecular motions in liquids', I was stirred by a particular emotion. This had two reasons, one general and the other rather personal. I would like to give an explanation in the Foreword to this volume of communications to the Meeting and their ensuing discussions. An essential characteristic of science is its international nature. It is like a symphony composed of contributions by all the countries playing together as an orchestra in unison. Just as a melody has different 'colours' when played by strings or woodwinds, so there exist similar 'colour' differences, subtle ones, between scientific contributions from different countries, rooted as they are in their own cultural history and liable to impoverish the ensemble if they should cease to participate. I have always had an impression of marked 'colour' differences prevailing among American, Russian, Japanese and European contributions, although within the latter group the timbre is very much the same. This is why I have dreamed of a European 'chamber orchestra' in addition to the great world orchestra.
Author: J. Duchesne Publisher: John Wiley & Sons ISBN: 0470143924 Category : Science Languages : en Pages : 768
Book Description
The Advances in Chemical Physics series provides the chemical physics and physical chemistry fields with a forum for critical, authoritative evaluations of advances in every area of the discipline. Filled with cutting-edge research reported in a cohesive manner not found elsewhere in the literature, each volume of the Advances in Chemical Physics series serves as the perfect supplement to any advanced graduate class devoted to the study of chemical physics.
Author: J. Laane Publisher: Springer Science & Business Media ISBN: 9401120749 Category : Science Languages : en Pages : 640
Book Description
From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.
Author: Jean P Mercier Publisher: Elsevier ISBN: 008095071X Category : Technology & Engineering Languages : en Pages : 476
Book Description
The approach of this concise but comprehensive introduction, covering all major classes of materials, is right for not just materials science students and professionals, but also for those in engineering, physics and chemistry, or other related disciplines. The characteristics of all main classes of materials, metals, polymers and ceramics, are explained with reference to real-world examples. So each class of material is described, then its properties are explained, with illustrative examples from the leading edge of application. This edition contains new material on nanomaterials and nanostructures, and includes a study of degradation and corrosion, and a presentation of the main organic composite materials. Illustrative examples include carbon fibres, the silicon crystal, metallic glasses, and diamond films. Applications explored include ultra-light aircraft, contact lenses, dental materials, single crystal blades for gas turbines, use of lasers in the automotive industry, cables for cable cars, permanent magnets and molecular electronic devices. - Covers latest materials including nanomaterials and nanostructures - Real-world case studies bring the theory to life and illustrate the latest in good design - All major classes of materials are covered in this concise yet comprehensive volume
Author: Mitchell A. Winnik Publisher: Springer Science & Business Media ISBN: 9400947267 Category : Science Languages : en Pages : 640
Book Description
In 1980 the New York Academy of Sciences sponsored a three-day conference on luminescence in biological and synthetic macromolecules. After that meeting, Professor Frans DeSchryver and I began to discuss the possibility of organizing a different kind of meeting, with time for both informal and in-depth discussions, to examine certain aspects of the application of fluorescence and phosphorescence spectroscopy to polymers. Our ideas developed through discussions with many others, particularly Professor Lucien Monnerie. By 1983, when we submitted our proposal to NATO for an Advanced Study Institute, the area had grown enormous ly. It is interesting in retrospect to look back on the points which emerged from these discussions as the basis around which the scientific program would be organized and the speakers chosen. We decided early on to focus on applications of these methods to provide information about polymer molecules and polymer systems: The topics would all relate to the conformation and dynamics of macromolecules, or to the morphology of polymer-containing systems. Another important decision was to expand the scope of the ASI to include certain photochemical techniques, parti cular ly laser flash pho to lys is. These appl icat ions were at the time quite new, but full of promise as important sources of information about polymers.
Author: Marie-Claire Bellissent-Funel Publisher: IOS Press ISBN: 9789051994391 Category : Medical Languages : en Pages : 456
Book Description
The interaction of water at organic surfaces or interfaces is of fundamental and technological interest and importance in chemistry, physics and biology. Progress towards an in-depth, molecular interpretation of the structure and dynamics of interfacial water needs a range of novel experimental and simulation techniques. We are now reaching the stage at which we understand, at the molecular level, the mutual perturbation at a macromolecule/water interface. The aims of this book are to provide with a comprehensive background to the properties of bulk water at the microscopic level and with a substantial account of the theoretical and experimental contributions which have been done to understand the role of water in various systems from some model systems to the more complex ones such as the biological systems.
Author: R. Daudel Publisher: Springer Science & Business Media ISBN: 9789027722461 Category : Science Languages : en Pages : 326
Book Description
This volume is the second of a set of two which contain 28 selected from the l. j. O invited lectures given at the internatim;al seminar of the same title held at the Centre de Mecanique Ondulatoire Appliquee du Centre National de la Recherche Scientifique in Paris (France) from October 1983 to May 1985. They are intended to provide a survey of topics of current interest relative to the structure and the dynamics of molecular systems. The papers have been selected on the basis of their relevance to the following four topics: i) molecular conformations and transformations; H) molecular relaxation and motion; iii) charge, spin and momentum distributions and intermolecular interactions; iv) collective phenomena in condensed matter. The first volume deals mostly with the first two topics, the second volume mostly with the last two. The two volumes consist of an approximately equal number of self-con tained, reference contributions covering recent achievements in active branches of molecular physics and physical chemistry. The first two papers of the present volume deal with theoretical aspects of intermolecular interactions: the first paper with the physical origin of the so-called non-exchange molecular terms, a complete deriva tion of which is given using Rayleigh-Schrodinger second-order perturba tion theory; the second paper with the symmetry analysis of the effects of interactions between rigid molecules and crystal environments, using the isodynamic-group theoretical approach devised by Altmann for non rigid systems.
Author: Sam Stuart
Author: Sam Stuart
Author: Michel Marraud
Author: Michel Nardin
Author: J. Lascombe
Author: J. Duchesne
Author: J. Laane
Author: Jean P Mercier
Author: Mitchell A. Winnik
Author: Marie-Claire Bellissent-Funel
Author: R. Daudel