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Molecular Structure and Properties, International Review of Science, Physical Chemistry Series Two, Vol. 2, edited by A. D. Buckingham, Butterworths, London and Boston, 1975, pp- 404, price $13.45. The aim of this series is to provide chemists with critical and up-to-date reviews on all aspects of molecular structure and properties. This volume comprises 9 reviews covering a wide range of topics by authors who are specialists in their field. The first review deals with molecular structure determination by highresolution spectroscopy, and covers derivation of structural information, the theory of the vibrating rotor, types, special problems, and comparisons of structure determinations. The next review discusses molecular properties which have been obtained by molecular +un spectroscopic methods. This field has developed a variety of techniqum and capabilities since the initial experiments of the late 1930’s, and has now become a general experimental technique. Chapter 3 deals with Van der Waal’s molecules - the methods used in their formation, their energy levels, and experimental techniques used in their study. Chapter 4 considers structure determination by NMR spectroscopy for diamagnetic molecules and those made paramagnetic by complexing. The basic theory of the interactions, and its application through different experimental techniques, is discussed. The following review covers the range of phenomena in which atomic and molecular polarisabilities are involved, and outlines the experimental and theoretical methods used for their evaluation. Chapter 6 discussed bonding features in magnetochemical models; the first section discussing a model for distortion, and the second magnetic exchange. Chapter 7 is concerned with the application of hyperfme studies to problems in electronic structure and bonding, and Chapter 8 considers equilibrium properties of molecular fluids. The final review, “Structure/ Property Relationship in High Polymers” discusses the statics and dynamics of individual polymer chains, polymers in bulk, and crystalline polymers. J. W.
The Theory of Molecular Spectroscopy, Vol. 1, by C. J. H. Schutte, NorthHolland/American Elsevier, 1976, pp. xvi + 512, price $69.95. This book deals with the mathematical theory of the spectroscopy of molecules and ions: Volume 1 describes the quantum-mechanical background of molecular vibrations and rotations. The first chapter surveys the relevant mathematical background of quantum mechanics, in particular the theory of linear operators, their eigenvalue