Progress in nuclear magnetic resonance spectroscopy

Progress in nuclear magnetic resonance spectroscopy

470 organized according to the formula index used by Chemical Absrracts and the nomenclature conforms as far as possible to the Chemical Abstract syst...

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470 organized according to the formula index used by Chemical Absrracts and the nomenclature conforms as far as possible to the Chemical Abstract system. A simple system has been adopted to facilitate searching. The numerical data in the third column present wavelength values in millimicrons (or nanometers) for all maxima, shoulders and inflections, with the logarithms of the corresponding molar absorptivities in parentheses. Shoulders and inflections are marked with a letter “s”. In spectra with considerable fine structure in the bands a main maximum is listed and labelled with the letter “f”. Numerical values reported by authors are given to the nearest 0.1 millimicron for wavelength (if possible) and 0.01 unit for the logarithm of the molar absorptivity. Spectra that change with time are labelled “changing” and temperatures are sometimes indicated. The reference column contains the code number of the journal, the page number of the paper, and in the last two digits the year. A letter is added for journals with more than one volume in a year. The complete list of all articles with authors is found in the references at the end of the volume. This volume of the series is extensive in its coverage of organic compounds. However as with other compilations there is a failing in that no index of the classes of compounds is included, which would indeed indicate the general extent of the coverage. P. J. B.

in Nuclear Magnetic Resonance Spectroscopy, by J. VV. EMSLEY, J. FEENEY, AND L. H. SUTCLIFFE (general editors), Volume 8, Part 3, The Stereochemistry of Double Bonds, by G. J. MAR?TN AND M. L. MARTIN, Pergamon Press, Oxford, 1972, pp. vi+97, price h2.50. Progress

This review presents

a critical

account

of the application

of high-resolution

NMR spectroscopy to the determination of the configuration about formal double bonds, such as C-C, C-N, and N-N, etc., in organic molecules_ In 49 pages of text, the authors examine the reliability of using chemical shift and spin-spin coupling constant measurements, and general spectral considerations such as line intensities and spectrum symmetry for configuration assignments of stereoisomers. Their arguments, empirical in nature, are nicely illustrated with well chosen examples. The text is followed by 32 pages of useful tables summarizing chemical shift and coupling constant measurements for a wide range of C-C and C-N cis-trans pairs: the coverage is fairly comprehensive up to 1970; 445 papers are referenced. Free energies of activation for isomerization about these bonds are, when available, also tabulated. Sensibly, experimental conditions and source of information are included. This book is nicely produced and provides the reader with the requisite information, in an easily assimilable form, for the successful application of NMR

471 to the elucidation of the stereo configuration of double bonds: it can be strongly

recommended to organic chemists interested in such problems, but it will be of little interest to the phenomenon-orientated NMR specialist. As a prospective purchaser of volume 8, the reviewer is somewhat disappointed at the editors decision to collate, in this volume, such disparate reviews as this and the one which appeared in Part 1. It is to be hoped a more coherent editorial policy be prevail in the future. N. B.

Introduction

to Bioenergetics:

Tizermodynamics for

the Biologist

-

A Learning

and Medical Sciences, by HALVOR N. CHRISTENSEN AND RICHARDA. CELLARIUS,W. B. Saunders Company, Philadelphia, 1972, pp. xii -l-223, price L2.35.

Program for Students

of the Biological

Texts of programmed learning have been with us now for a number of years. Some teachers swear by them, others at them. while to many, including the present reviewer, they might usefully form the basis of tutorials or practical working sessions; they do not in the normal way give the requisite amount of reading matter necessary for a full grasp of the subject. However, with the explosion in knowledge and the impossibility of covering in depth all ancillary subjects which are useful to the student of biology or medicine, one has to recognise that such a student will always be looking for ways of economizing in the breadth of his reading. To this extent the authors of the present book have certainly laid down a foundation course in bioenergetics which is sufficiently thorough and up-to-date. The work itself is divided into five main sections, the first two of which deal with the first and second laws of thermodynamics. Then follow in succession. Sections dealing with chemical reactions, oxidation-reduction reactions and membrane equilibria. A few biochemical illustrations of non-equilibrium thermodynamics are also included together with a number of examination questions. The printing is clear and the lay-out of the book good but the price is unlikely to induce many biological students in Europe to buy it unless it is part of a compulsory class course. J. G. H.

Relaxation

in Magnetic

Resonance,

Dielectric

and Miissbauer

Applications,

by

CHARLES P. POOLEJr AND HORACIOA. FARACH,Academic Press, New York, 197 1,

pp. xvf392,

price fJs.10.

Dr. Poole and Dr. Farach have attempted to provide an introduction to the determination of magnetic resonance relaxation times, and to survey the under-