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Book Review 2200 Begriffsbestimmungen nach DIN (Deutsch und Englisch) (2200 DIN Definitions (German and English)). By H. G. Freeman

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pages 15 to 19 would have been a good starting point for
this discussion. The separate treatment of the K-complexes
of pure olefins and of olefins containing functional groups
makes it more difficult for the reader to trace relationships
between the structure of the olefin and the properties of the
complexes, particularly as a function of the metal. This arrangement also makes repetitions inevitable (compare e.g. pages 88
to 90 and 335 to 336). However, the excellent subject index
and the author index are helpful in this respect.
guages. The standard specifications are classified according
to the Standards Institute.
For the first time, a work compiling information scattered
over many standard specifications has become available, which
can be used even by those not familiar with the standards.
This carefully written book will constitute a valuable tool
for the specialized translator and is an indispensable addition
to the many technical dictionaries already in existence.
For the specialist particularly this first volume is a real treasure
house. It contains an abundance of interesting information
that would certainly not appear in normal surveys and reviews,
and that will undoubtedly stimulate new investigations. The
author could possibly have taken more opportunities to direct
the reader’s attention to questions that are still unanswered.
Christian Weiske [NB 21 1 IE]
Both parts have been carefully produced, and the reviewer
has been unable to find any serious printing errors, a point
that is particularly pleasing in connection with the references.
A missing H in the structural formula of tetracarbonyl(pyrro1idine)iron (Part 1, p. 77) was also missing in the original
publication. The author and the publishers are particularly
to be commended for their care.
In the second part an attempt by the author to give an interpretative survey is sometimes missed too. An indication of
corresponding specialist pubfications such as KelIers’ “NMRUntersuchungen an Komplex-Verbindungen” would help here.
On the other hand there are again numerous excellent tabular
summeries and reaction schemes. The completeness of the information can also be relied upon. In the chapter on IR
spectroscopy, a short mention of the CO stretching vibrations
of the olefin-carbonylmetal complexes would have been useful, since in practice they are often used for characterization
and for the detailed study of the bonding in these complexes.
This two-part monograph will be an indispensable aid to
anyone working in the field of metal-olefin complexes, regardless of whether he is seeking an introduction or has already
had many years’ experience. The corresponding hope, expressed
in the foreword, is fulfilled in every respect. This monograph
should indeed find a wide readership, even though some
hearts may sink at the price.
Ernst Koerner von Gustorf
[NB 209 IE]
2200 Begriffsbestirnrnungen nach DIN (Deutsch und Englisch)
(2200 DIN Definitions (German and English)). By H . G.
Freeman. Beuth-Vertrieb GmbH, Berlin-CologneFrankfurt/M. 1972. 1st Edit., 352 pp., bound DM 35.50.
This book lists in alphabetical order 2200 keywords selected
from approximately 4000 DIN specifications. The keywords
belong to the fields of mechanical engineering, electrical
engineering, metallurgy of iron and other metals, techniques
of welding, soldering, measuring, control devices, X-rays, plastics, adhesives, coatings, the testing of materials, physics, and
chemistry. The keywords are explained by definitions laid
down by Standards Institutes and, if necessary, by additional
annotations. The corresponding English or rather British definition (adapted to British Standards) is supplemented by an
explanation corresponding to the meaning of the German
text. For each keyword the original DIN specification from
which the word stems is listed. Homonyms are listed consecutively. In the second part the English terms are compiled in
alphabetical order, without definitions but with the German
terms and the field to which the terms belong. The book
is supplemented by a list of standard specifications containing
translations of technical terms into English and other lanAngew. Chrm. internof. Edit.
1 Vol. 13 ( 1 9 7 4 ) J No. 8
Interpretation of Mass Spectra of Organic Compounds. By
M . C. Hamming and N . G. Foster. Academic Press, New
1972. 1st Edit., xiv, 6 94 pp., numerous
figures and tables, bound B 37.50.
The mass spectrometer is still regarded by many organic
chemists as a costly but very precise instrument for the determination of molecular weights and empirical formulas and
is used accordingly. The utilization of the information contained in a mass spectrum for the determination of molecular
structures often fails on account of the complexity of the
problem and the lack of simple, comprehensive, and generally
applicable principles of interpretation. Many attempts have
been made to overcome this problem in countless textbooks
and studies, generally with reasonable success; the book in
question represents another independently conceived attempt.
The book is intended as an introduction to organic mass
spectroscopy, but it opens up interesting possibilities for the
specialist on account of its comprehensive literature index
and carefully compiled bibliography.
The authors first describe in condensed form the instrumental
basis of mass spectroscopy and the general properties of mass
spectra, the influence of instrumental and material parameters
on spectra, and the types of ions encountered. Sample manipulation and injection techniques are described in great detail.
This is followed by a summary of fragmentation reactions.
In contrast to many textbooks on this subject, there is not
much discussion of the fragmentation pattern of different
classes of substances; instead, after discussing the most important breakdown mechanisms (8 types of simple bond cleavage,
5 rearrangement reactions) and their occurrence in relation
to the existence of certain structural elements, a strategy is
slowly developed, which should allow a step by step integration
of the mass spectrum of a substance and lead to its identification. This strategy culminates in a schematic procedure, which
requires a specific rectangular arrangement of the mass spectra;
the interpretation is then achieved by means of “interpretation
maps” (39 interpretation maps are listed in the appendix).
This is undoubtedly an interesting and stimulating attempt,
but it is based largely on hypothesis, for the method is still
far from perfection. Finally, computer processing of mass
spectroscopic data assumes an important place in the book.
A few of the book’s drawbacks cannot be overlooked. The
broad epic style, in addition to lack of accuracy and clarity,
does not facilitate reading. The very small number of illustrated
mass spectra is remarkable. In comparison with the length
of some other chapters, the treatment of metastable transitions
and of pertinent modern techniques of measurement is much
too short. Nevertheless, the book can be recommended to
students and specialists, particularly on account of the wealth
of information it contains.
Jorn Miiller
[NB 212 lE]
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