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Book Review Ligandenfeldtheorie (Ligand Field Theory). Chemische Taschenbcher 19. By P. Schuster

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BOOK REVIEWS
Ligandenieldtheorie (Ligand Field Theory). Chemische Taschenbucher 19. By P . Schuster. Verlag Chemie GmbH,
Weinheim 1973. 1st Edit., ix, 192 pp., 32 figures, 43 tables,
paperback, DM 28.-.
This volume in the “Chemische Taschenbiicher” series provides the reader with an introduction to ligand field theory,
but it seems doubtful if such relatively short treatment can
fulfil the author’s intention, stated in the Foreword, i.e. to
offer an introduction to the beginner or near-beginner and
to lead him from there to the stage where he can read and
understand original papers “without difficulty”.
The book is suited above all-and €or this it is suited very
well-as a basis for a lecture or seminar on ligand field
theory. Without such additional introduction the reader who,
as stated in the Foreword, has mastered only the “simplest
principles” of quantum mechanics, would hardly be able to
follow the necessarily concise expositions. For example, finding
the energy levels relating to a many-electron problem would
be difficult for such a reader.
Several misprints and blemishes in the setting could certainly
be corrected in the next edition : one example is the repeated
confusion between v and u. Superscripts, e. g. those characterizing an approximation step, should be placed consistently in
parentheses, at least within one and the same formula. The
angular momentum quantum number 1 should not be printed
in italics when this is not done with any of the other quantum
numbers. The additional problems set are certainly very useful,
yet the reviewer doubts whether the reader would be able
to solve them after going through this book; they should
at least be complemented by provision of the answers.
Karl Hensen “€3
237 IE]
Ionenkristalle, Gitterdefekte und Nichtstiichiometriscbe Verbindungen (Tonic Crystals, Lattice Defects and Non-stoichiometric Compounds). By N . N . Greenwood. Translated by
H.-G. uon Schnering and B. Kolloch. Verlag Chemie GmbH,
Weinheim 1973. 1st Edit., viii, 185 pp., 60 figures, 26 tables,
paperback, DM 28.--.
The declared aim of this book, “to give the first systematic
and comprehensive account of modern views on the influence
of lattice defects on the properties of ionic solids”, is certainly
pitched too high, since the first edition of Kroger’s “The
Chemistry of Imperfect Crystals” appeared as early as 1964,
four years before the first edition of the English original of
the book reviewed here. The book rather provides an introduction, for the most part intelligibly presented, to the chemistry
of imperfect ionic crystals, and its evolution from a lecture
manuscript can be recognized, ndt least by the skilfully selected
examples. The first three chapters are devoted to ideal ionic
crystals, occupying a relatively large space (about 60 pages),
even after taking into account the “chemical” viewpoint that
the author intentionally emphasizes. The next three chapters
are concerned with lattice defects in “stoichiometric” and
“non-stoichiometric” crystals, although in the introduction
to Chapter 6 the author himself recognizes this differentiation
to be “arbitrary in the narrow sense”.,Thelast chapter describes
the experimental study of non-stoichiornetric phases. Surprisingly, the relation between vacant sites and material transport
is handled explicitly in only four pages, and the study of
lattice defects by magnetic resonance is merely mentioned
(Chapter 4).
Summarizing, it may be stated that this translation, satisfactorily produced and in fluent, almost faultless German, is not
Angew. Chern, internat. Edit. / VoL J4 ( 1 9 7 5 ) / N o . 2
exactIy good value for money in comparison with the original
(DM 16.-), but it is certainly suitable for readers interested
in a concise introduction to the chemistry of imperfect ionic
crystals.
G . Borchardt [NB 240 IE]
Reaktionsmechanismen der Organiscben Chemie. Ein Seminarbuch (Reaction Mechanisms in Organic Chemistry. Seminar
Book). By W . HGver. Verlag Chemie GmbH, Weinheim
and John Wiley & Sons, New York 1973. 1st Edit., 565
pp. 23 figures, 28 tables, paperback, DM 48.--.
Traditional textbooks on reaction mechanisms in organic
chemistry generally begin with a section on methods and
then treat the various types of reaction. The reader can then
test and extend his knowledge by means of the problems
set at the end of each section.
The present book turns this arrangement upside down. It
begins by setting out the problems on the first pages, and
in the 500 pages of the second part accompanies the solution
of the specificexerciseswith a very broad and complete description of the field. The author’s intention of presenting a typical
seminar book is thus realized.
The 210 problems are presented according to a systematic
scheme: Structural formulas are given for the starting materials, but the intermediates and the end products are written
as molecular formulas and characterized by IR, UV, and
NMR data. Each reaction is studied in detail, so that often
more than ten molecular formulas have to be unravelled.
Special attention is paid to seeing that the mechanism explains
the formation of all the products.
Most of the often very specialized problems are barely soluble
by even an advanced student, so that sensible use of this
book would be by joint work on the problems within the
framework of a seminar. In this way the student would learn
in detail all the reaction types in organic chemistry; the greatest
emphasis is placed on important research areas such as the
Woodward-Hoffmann rules. The chemistry of radicals and
photochemistry are treated too sparingly. It is also apparent
that the results of kinetic measurements are not sufficiently
included in the discussions.
Apart from these criticisms it seems to me that the author
has succeeded in producing a comprehensive modern book
on reaction mechanism, especially suitable for seminar work
with advanced students.
Bernd Giese [NB 241 IE]
Elementarphysik griffbereit. Definitionen, Gesetze, Tabellen.
By N . 1. Koschkzn and M . G. Schirkjewitsch. Vieweg,
Braunschweig 1974. XV, 232 pp., bound, DM 19.80.
Hydrogen Bonding. By M . D.Joesten and L. J . Schad. Marcel
Dekker, Inc., New York 1974. VI, 622 pp., bound, 3 45.-.
Carbanions: Mechanistic and Isotopic Aspects. By E. Buncel.
Vol. 9 of the series “Reaction Mechanisms in Organic
115
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