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Book Review Die Organische Chemie des Zinns (The Organic Chemistry of Tin). By W. P. Neumann

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In the second Part the supplementary results of EPR measure
ments are again presented in a clear table (95 pages), the
arrangement being the same as in the first part. Here too
there is a short introduction, with references arranged
according to specialist fields.
All in all, this is a reference book that will soon become
essential to the expert.
W . Bronger
[NB 658 IE]
Einfiihrung in die Liganden-Feldtheorie (Introduction to Ligand Field Theory). By H. L. Schlafer and G . Gliemann.
Akademische Verlagsgesellschaft, Frankfurt 1967. 1st
Edit., xiv, 522 p., 147 figures, D M 59.-.
The book is divided into two practically independent parts A
and B, which approach the subject-matter from two different
points of view.
The first part (and many readers wilI not go beyond it) starts
with the problem “color and constitution” in complexes.
Ligand and central atom absorption bands are distinguished
empirically, and the important findings of the ligand field
theory are likewise explained by reproductions of spectra
and diagrams rather than by mathematical formulas. The
reader is informed why the hexammine complex of divalent
copper is deep blue, and is also told the answer to a number
of other problems from the field of complex chemistry.
Magnetic properties are also clearly explained, and a discussion of the important problem of the “kinetic stability”
of complexes is included. Unfortunately, no theory of metal
carbonyls and metal aromatic complexes is given, though the
fundamentals underlying their comprehension are fully
stated. A few lines of small print are all that is offered about
the f electrons of the rare earths, and the interesting do
complexes of the type of the M n 0 4 - ions have been left out.
While the second part of the book presupposes that the
reader has but little knowledge of quantum chemistry, it is
clear that it is designed for those who enjoy mathematical
formalism. Presentation is in a clear, careful, systematic, and
to some extent a pedantically detailed form. Before proceeding to the ligand field theory proper, the authors present
a detailed description of the theory of free ions and group
theory. The principal results are clearly tabulated.
The authors interpret the ligand field theory as an extension
of the electrostatic theory, based on a classical article by
Bethe (1929) and the evidently not very well known work of
Ilse and Hartmann (1951). Justifiably, the molecular orbital
theory of complexes is regarded as merely a n extension and
not as a true alternative.
Recent publications in this currently very active field are not
considered in the discussion. The authors confine themselves
to what is generally accepted, but give useful references to
relevant literature.
The book can be recommended to a wide circle of readers,
but above all to those interested in complex chemistry. A
better coordination of Parts A and B might, perhaps, be
achieved in a subsequent edition; Part B could, for instance,
provide a n explicit description of the derivation of the
Tanabe-Sugano diagrams which form such an important
item in Part A. A few blemishes in presentation could also
be eliminated.
W. Kutzelnigg
[NB 703 IE]
Die Organische Chemie des Zinns (The Organic Chemistry of
Tin). By W. P. Neumann. Ferdinand Enke Verlag, Stuttgart
1967. 1st Edit., xii, 232 pp.. 4 illustrations and numerous
tables, D M 69.-.
The chemistry of organotin compounds is one of the most
important divisions of modern organometallic chemistry,
because intensified research in this field and increased practical importance are bringing it more and more into
prominence. The appearance of a monograph o n the
subject is therefore to be welcomed. Research on organotin
compounds has been carried out by both organic and inorganic chemists, so that progress has profited from the
experience of both groups of workers. Nevertheless, in spite of
the common subject, the original papers usually bear the
stamp of their origin both in the problem chosen and in the
approach to its solution. This book is no exception in that it
was obviously conceived and worked out by a true organic
chemist, as the title also shows; it is to be taken literally.
The properties, methods of synthesis, and reactions of many
organotin compounds are described in detail, reaction routes
are interpreted mechanistically when possible, and relations
between structure and reactivityare studied critically; further,
points of practical interest, such as the numerous possibilities
of industrial use, are treated at adequate length. On the
other hand, other aspects are given only summary treatment,
for instance, physicochemical and spectroscopic data
(UV, IR, Raman, NMR, and Mossbauer spectra occupy a
total of 3 pages), the complex-chemical behavior of organotin
compounds, and the organotin derivatives of the transition
metals. However, the original literature of these areas is well
covered (930 references) and thus is a t least made accessible
from this course. The book therefore supplements the previous, smaller reviews of organotin chemistry, and may even
replace them. The reviewer nevertheless considers the price
rather high.
H . Schrnidbaur
[NB 673 IE]
Kollagen (Collagen). By G . Reich. Verlag Theodor Steinkopff, Dresden 1966. xii, 308 pp., 61 illustrations, 85 tables,
D M 48.80.
This book carries the modest-sounding sub-title “An Introduction to Methods, Results, and Problems of Collagen
Research”, but that is only a partial description of it. In fact,
the book provides a good introduction into the varied aspects
of our knowledge of this fibrous protein for those who are not
specialists in collagen chemistry and also contains a wealth
of references for the specialist. The appearance of this
collation is particularly welcome because there has been
considerable development of research on collagen in the
past 10 to 15 years and the numerous recent original papers
o n chemical, medicinal, and technical aspects of the collagen
field no longer suffice without considerable preknowledge;
such knowledge has until now been difficult to obtain.
After an introduction into the construction of connective
tissue, the structure and the physical and chemical properties
of collagen are treated in great detail. Sections o n general
methods of protein chemistry are scattered throughout the
text to help the beginner. The biological, biochemical, and
medical aspects of collagen are intentionally treated rather
more summarily; the detailed treatment returns with the
production of leather and gelatin. The text is characterized
by very conscientious coverage of the literature (1260
references). This has the natural result that very often the
conclusions reached in the literature are described rather than
the methods used or the experimental data, but this is to be
welcomed in the interests of clarity and readability. The book
will be a valuable help in literature searches for those who
wish to delve deeply into the problems of collagen chemistry.
Because the reviews that have appeared in the English
language are outdated or concern mainly specialized sectional
problems, this book may well gain a very wide audience.
H. Hormann
[NB 651 lE]
ComprehensiveBiochemistry. Edited by M. Florkin and E. H .
Stotz. Vol. 22. Bioenergetics. Elsevier Publishing Company, Amsterdam-London-New York 1967. 1st Edit., xi.
214 pp.. 51 figures, Dfl. 35.- (11.
In intermediate metabolism, dissimilatory and synthetic
energies are therrnochemically coupled. The energy cycles
[l] Vol. 16, cf. Angew. Chem. 79, 159 (1967); Angew. Chern.
internat. Edit. 6 , 191 (1967).
Angew. Chem. internat. Edit. 1 VoI. 7 (1968) 1 No. 4
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