Some Electrical and Optical Aspects of Molecular Behaviour

Some Electrical and Optical Aspects of Molecular Behaviour

The Commonwealth and International Library: Chemistry Division

1st Edition - January 1, 1965

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  • Author: Mansel Davies
  • eBook ISBN: 9781483196145

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Some Electrical and Optical Aspects of Molecular Behaviour deals with dipole moments, molecular science, and molecular polarizability. The author explains the refractive index and the electric permittivity including polarization, polarizability, the Mossotti-Clausius equation, molar polarization, and molar refraction. The author also addresses the results of dipole moment measurements, the significance of the values obtained, and how these can determine molecular structural features. By using the Debye equation, one can determine the molecular moments of polar solutes in non-polar solvents. The book discusses how molecular polarizability and molecular polarization are measured and how these factors are associated with molecular structure. He also explains light scattering and the molecular weight of solutes by employing the research made by Debye which determines the weights, shapes, and interactions of molecules in solution. The author also addresses the form and order of the magnitude of interaction energies and cites typical examples of these occurrences. These energies often represent an electrostatic nature; in some ways, they can be understood as being quantum-mechanical in nature. This book can be helpful for students taking up dipole moments, molecular polarizability or molecular science.

Table of Contents


    Inside Front Cover One

    Inside Front Cover Two

    Some Numerical Constants


    Chapter 1: An Introduction

    Publisher Summary


    Chapter 2: The Refractive Index and the Electric Permittivity

    Publisher Summary

    Polarization and Polarizability

    The Mossotti-Clausius Equation

    The Molar Polarization

    The Molar Refraction

    Polar Compounds

    The Measurement of the Permittivity, ε′

    The Debye Equation

    Approximate Dipole Moments Evaluated from Solution Data

    Other Methods of Dipole Moment Determination


    Chapter 3: Molecular Dipole Moments

    Ionic Character of Diatomic Molecules

    Other Ionic Molecules

    Vector Character of Dipole Moments

    Group Moments and Molecular Structure

    Intramolecular Rotation


    Chapter 4: The Limitations and Extensions of the Simple (Debye) Treatment of the Molar Polarization

    Publisher Summary

    The Dipole Concentration

    The Onsager Equation

    Water and Hydrogen-bonded Liquids


    Chapter 5: Dielectric Dispersion and Molecular Behaviour

    Publisher Summary

    Phase Angle and Dielectric Loss

    The Pellat-Debye Equations

    Experimental Study of Dielectric Absorption


    Polar Solutes in Non-polar Solvents

    Organic Solids

    Ionic and Polar Solids


    Chapter 6: Aspects of Molecular Polarizability

    Light Scattering

    Light Scattering and the Molecular Weight of Solutes

    Measurement of Light Scattering by Solutions

    Dissymmetric Light Scattering and Molecular Shape

    Depolarization of Scattered Light

    Anisotropy of the Polarizability

    The Kerr Effect

    The Data and Interpretation of Molecular Anisotropy

    Polarizability and Optical Activity

    The Helical Model

    The Raman Effect



    Chapter 7: Electric Forces Between Molecules

    Publisher Summary



    Two Rigid Dipoles

    Induced Dipole

    Ion-Induced Dipole

    Dipole-Induced Dipole

    Dispersion (or London) Energy

    Quadrupole Moments

    Repulsion Energy

    Intermolecular Interaction Energies

    Dipole Interactions

    Ionic Interaction Energies


    Numerical Answers to Examples


Product details

  • No. of pages: 200
  • Language: English
  • Copyright: © Pergamon 2013
  • Published: January 1, 1965
  • Imprint: Pergamon
  • eBook ISBN: 9781483196145

About the Author

Mansel Davies

About the Editors

Robert Robinson

Affiliations and Expertise

Recently retired from editorship of Canadian Security magazine

H. M. N. H. Irving

L. A. K. Staveley

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