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Author: Mohamed Ali Maatug
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Mohamed Ali Maatug
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Ferid Bashirov
Publisher: CRC Press
ISBN: 1439870837
Category : Science
Languages : en
Pages : 164
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Book Description
Spectroscopic Techniques and Hindered Molecular Motion presents a united, theoretical approach to studying classical local thermal motion of small molecules and molecular fragments in crystals by spectroscopic techniques. Mono- and polycrystalline case studies demonstrate performance validity. The book focuses on small molecules and molecular fragments, such as N2, HCl, CO2, CH4, H2O, NH4, BeF4, NH3, CH2, CH3, C6H6, SF6, and other symmetrical atomic formations, which exhibit local hindered motion in molecular condensed media: molecular and ionic crystals, molecular liquids, liquid crystals, polymeric solids, and biological objects. It reviews the state of studying the hindered molecular motion (HMM) phenomenon and the experimental works on the basis of the latest theoretical research. Case Studies Physical models of hindered molecular motion General solution of the stochastic problem for the hindered molecular motion in crystals Formulae of the angular autocorrelation function symmetrized on the crystallographic point symmetry groups Formulae of the spectral line shapes concerning the dielectric, infrared, Raman, nuclear magnetic relaxation, and neutron scattering spectroscopy in the presence of the hindered molecular motion Experimental probation of the theoretical outcomes Proton relaxation in three-atomic molecular fragments undergoing axial symmetry hindered motion Structural distortion in the ordered phase of crystalline ammonium chloride Organic compounds, polymers, pharmaceutical products, and biological systems consist of the molecular fragments, which possess rotational or conformational degrees of freedom or an atomic exchange within the fragments. Liquid crystals present a menagerie of substances for which orientational ordering shows special significance. Knowledge of the laws of molecular motion stimulates growing new crystals and synthesizing new substances with the desired properties. Although this book does not exhaust all varieties of scientific and engineering problems, it is a fundamental and comprehensive resource and catalyst for further HMM research.
Author: S. Bratos
Publisher: Springer Science & Business Media
ISBN: 1461331110
Category : Science
Languages : en
Pages : 461
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Book Description
This book has its or1g1n in a NATO Summer School organized from June 25 to July 7 1979, in Menton, France. The purpose of this School was a comparative study of the various aspects of vibra tional spectroscopy in molecular liquids and solids. This field has been rapidly expanding in the last decade; unfortunately, its development took place independently for liquids and for solids. In these circumstances, the comparison of the basic concepts and techniques used in these two branches of physics appeared as a necessity. The lectures given at the Menton Advanced Study Institute, as well as the exceptionally fruitful and lively discussions which followed them confirmed this point of view. The need of putting together these lectures, in the form of a monograph, clearly appeared during the ASI and the lecturers accepted to write down the material they presented at the Institute, improved thanks to the remarks of the participants. It is the result of this collective work which appears in the familiar Plenum Series.
Author: Robert Sague Carter
Publisher:
ISBN:
Category : Molecular dynamics
Languages : en
Pages : 594
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Author: Peter Miles Anson Sherwood
Publisher: CUP Archive
ISBN: 9780521084826
Category : Science
Languages : en
Pages : 276
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This 1972 monograph is devoted to the analysis and interpretation of the infrared and Raman spectra of solid compounds, frequently used for their identification and characterization. It was thought unsatisfactory to analyse such spectra by the theory applicable to gas-phase samples, though this was frequently done. Furthermore, the results obtained by far infrared and laser Raman spectrometers, which detect the movement of atoms and/or molecules as a whole, had no gas-phase analogy. A separate approach to solid state vibrational spectra was therefore proposed within this volume. Dr Sherwood describes the solid state physics of vibrational spectroscopy and extends it to the more complex structures of low symmetry. He assumes an understanding of the infrared and Raman spectra of gases.
Author: R. S. Carter
Publisher:
ISBN: 9781410223043
Category : Technology & Engineering
Languages : en
Pages : 588
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Book Description
This volume is based on material presented at the Second Materials Research Symposium of the National Bureau of Standards, held October 16-19, 1967. It provides a review of the application of spectroscopic and diffraction techniques to the study of the structure and dynamics of molecular solids. Invited papers on the theory and practice of the major experimental methods, including neutron and x-ray diffraction, neutron inelastic scattering, infrared and Raman spectroscopy and nuclear magnetic resonance, serve as a background for the more detailed presentation and discussion of results which follows. The topics covered in a series of invited and contributed papers include the lattice dynamics of molecular crystals, the spectroscopy and crystal structure of organic and inorganic solids and the dynamics of polymers.
Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 640
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Author: J. Lascombe
Publisher: Springer Science & Business Media
ISBN: 9401021775
Category : Science
Languages : en
Pages : 645
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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: Wilhelm Jost
Publisher: Elsevier
ISBN: 0323143474
Category : Science
Languages : en
Pages : 684
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Book Description
Physical Chemistry: An Advanced Treatise, Volume I: Thermodynamics deals with the applications of thermodynamics to mixtures, fluids, and solid systems at high pressures and temperatures, critical phenomena, practical handling of coupled gas equilibriums, and matter in electric, magnetic, and gravitational fields. This book begins with a survey of basic laws, followed by discussions on questions of stability, irreversible processes, surfaces, the third law, and a short introduction to Caratheodory's axiomatic foundation. The zeroth law of thermodynamics, gaseous mixtures, internal equilibrium in solids, thermodynamic properties of the mixture, and theory of linear differential forms are also elaborated. This publication presents a comprehensive treatment of physical chemistry for advanced students and researchers.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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