# Fundamentals of Molecular Symmetry. Series in Chemical Physics. By Philip R. Bunker and Per Jensen

код для вставкиСкачатьBooks also to sources more easily accessible to the public, and to internet sites, for example. That would certainly give the interested reader better opportunities for gaining a deeper knowledge of some aspects. As always, the optimum provision would be a well-ordered bibliography with references to original sources. To summarize, John Mann has succeeded well in bridging the gap between the biological relationships of life on one hand and the vast number of research results on the other hand, which can only be recognized as true milestones of pharmaceutical research when we look back at the whole picture from the present day. Readers who expect that in this book, which covers such a wide variety of topics, every chapter will provide an exhaustive description of individual drugs, and a full and detailed discussion of their molecular mechanisms, are perhaps better advised to read advanced books on those topics. I hope that all other readers will derive untroubled enjoyment from the contents of this book. Olaf Prien Schering AG Berlin (Germany) Fundamentals of Molecular Symmetry Series in Chemical Physics. By Philip R. Bunker and Per Jensen. Institute of Physics Publishing, Bristol 2004. 358 pp., softcover £ 38.00.—ISBN 0-7503-0941-5 Since Wigner%s groundbreaking publication in 1931 on the application of group theory to the interpretation of atomic spectra, there have been countless monographs that have extended the principle by applying molecular symmetry considerations to the analysis of 6616 www.angewandte.org molecular spectra. One need only think of F. A. Cotton%s work Chemical Application of Group Theory, which served as a companion for several generations of students. That book was a boon for those chemistry students who had little inclination for preparative work, but wished to gain a deeper understanding of molecular vibrations and the electronic excitation spectra of molecules. Today%s students are more economical and selective in their use of learning resources, which is certainly because the demands placed on students, and therefore also the available resources, have changed radically. Who are the readers most likely to benefit from the present book? It is intended especially for students who wish to extend their studies to include more advanced work in the area of the high-resolution spectroscopy of small molecules. It can certainly be recommended for those readers, as the authors are recognized experts in this field, and are therefore familiar with all the important types of problems and the difficulties that are encountered, which are treated thoroughly in the book. Its particular advantage is that, rather than deriving the symmetry properties of molecules solely from their equilibrium geometrical configurations and the resulting point groups, the emphasis is instead on developing them by considering molecular symmetry groups, which are based on the permutation groups of selected particles (nuclei, electrons). The mathematical and physical relationships are explained in an easily understandable way. I found only one case where the authors failed to give a full explanation: in introducing the transition moment and the application of the direct product to the resulting integrands, the authors merely state that the overall transformation of the integrand is totally symmetrical, without explaining the physical reason for this. On the whole, the topics are developed in manageably small steps. By taking a small number of molecules as examples, the student is shown how the mathematical operations are performed in practice, and how the theory is applied. This approach is followed consistently throughout almost the entire book. Important generalizations and 3 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim theoretical principles are highlighted in “boxes”, so that the reader can quickly recognize the essential points and key statements. In the first chapter, as an introduction, some basic principles of spectroscopy are explained, covering ground similar to that in elementary lectures on physical chemistry. The authors undoubtedly intended that this should give the student an introduction to the interpretation of spectra, without the need for previous knowledge. Accordingly, the exercise problems in this introductory chapter are kept at an elementary level. In the rest of the chapters, the exercise problems that accompany the text are reasonably easy to solve and do not overtax the student. Brief model answers are provided for some of the questions. For students using the book for independent learning, it would certainly be desirable to give short solutions to all the exercises. The visual presentation of the material is rather unsatisfactory in a few places. Thus, some of the figures do not fit harmoniously into the text layout, for example because of a poor choice of size, or because the numerical data shown on the axes of graphs are badly proportioned. In these cases the textbook looks more like a set of lecture notes, from which it has, in fact, probably originated. As mentioned at the beginning, the monograph is suitable for students who wish to be able to understand the highresolution spectra of small molecules. However, it can also be recommended for other readers who would like to get a better insight into the theoretical treatment and application of molecular symmetries, as a complement to existing monographs on point group symmetries—even though (in accordance with the book%s main purpose) some classical areas of application, such as molecular vibrations in transition-metal complexes, are not covered. Hans Bettermann Institut f-r Physikalische Chemie und Elektrochemie Universit1t D-sseldorf (Germany) DOI: 10.1002/anie.200485285 Angew. Chem. Int. Ed. 2005, 44, 6615 – 6616

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