close

Вход

Забыли?

вход по аккаунту

?

Book Review Principles of Organometallic Chemistry. By G. E. Coates M. L. H. Green P. Powell and K

код для вставкиСкачать
and scattering effects are described. 2, Kinetics of Photoluminescence (58 pages). The important aspects of excitation
and quenching processes are treated, as well as delayed
fluorescence. 3, Apparatus and Experimental Methods
(174 pages). In this chapter the author gives an excellent and
full description of the technique necessary for measurement
of luminescence. Each component of the luminescence
spectrometer is described in detail. In the part dealing with
methods, the main emphasis is placed on measurement of the
light beam, correction of luminescence spectra and measurement of lifetime and quantum yield. 4, Special Topics and
Applications (93 pages). Here the author has selected problems with which he is familiar, such as intersystem crossing
efficiency, protolytic reactions in the excited state, excimers,
and delayed fluorescence; but solvent effects and applications
of polarization measurements are treated only briefly. 5 , Application to Analytical Chemistry (105 pages). The use of
luminescence methods in determination of molecular structure are described, also qualitative and quantitative investigation of organic and inorganic compounds and of the elements
alone and in admixture. The book closes with a list of references and a detailed keyword index.
According to the foreword, the book is intended to fulfil a
double purpose: first, to teach students the fundamentals and,
secondly, to serve the specialist as a reference book. The
second aim seems to be met in chapters 3-5. The author’s
great experience makes itself felt in the description of methods
and apparatus; for instance, correction of emission and excitation spectra, not yet generally applied, are described in
detail. However, when reading the results of luminescence
spectroscopy recorded in the book one must not expect a
review of the present state of knowledge, for the author has
intentionally confined himself to his own specialistpartial field.
As an introduction to the fundamentals the book can be recommended only subject to restrictions. That the author has
refrained from quantum-chemical considerations is no disadvantage’ in principle, since specialist books exist in that
area. This has, however, been taken too far, so that some
fundamentals, such as the Frank-Condon principle cannot
be clearly presented. A number of quantum-chemical ideas,
such as charge-transfer state, nodal plane, and transition
moment, are used without exact explanation. Further, the
way in which certain basic relations are presented is open to
a series of objections; for instance, polarization effects and
the relation of lifetime to quantum yield are very sketchily
explained; also more space should have been devoted to the
solvent effect when treating the “Luminescence of Solutions”.
The good points of the book are undoubtedly the sections on
apparatus and methods. As a monograph it fills a gap in this
respect, and it can be very warmly recommended to chemists,
biochemists, and others interested in the application of
H. Stegemeyer [NB 835 IE]
luminescence spectroscopy.
Principles of Organometallic Chemistry. By G. E. Coates,
M. L. H. Green, P. Powell, and K. Wade. Methuen & Co.
Ltd., London 1968. 1st Edit., x + 259 pp., numerous
illustrations, bound 38 s.
This is an abbreviated presentation of the principles of the
organometallic chemistry of metals of the main and subgroups, based on the two-volume third edition of the same
authors’ “Organometallic Compounds”.
In this abbreviation the authors wished above all to provide
students with easy access to this rapidly developing branch
of chemistry. The authors have been extremely successful in
limiting themselves to the most important matters; they often
use skillfully chosen figures to replace much text, though
it is also good that the cost of preparation of some of the
key compounds is also discussed. The relation of theory
and physical studies (in particular X-ray structure studies)
is well done. The book is very carefully and clearly printed.
Because of its low price every student of chemistry can
P. Heimbach [NB 840 IE]
afford it.
Angew. Chern. internat. Edit. / Vol. 8 (1969)1 No. I2
Lehrbuch der Physikalischen Chemie - in elementarer Darstellung (Textbook of Elementary Physical Chemistry).
By J. Eggert, I. Hock, and G.-M. Schwab. S . Hirzel Verlag,
Stuttgart 1968. 9th revised Edition, 935 pp., 248 figures,
125 tables, bound DM 72.-.
The size of the present 9th edition of J. Eggert’s Textbook of
Physical Chemistry differs only slightly from that of the 8th
edition, which was published in 1960. The division into nine
chapters has also been retained: “Principles of the Atomistic
and Energetic Approach”; “Atoms”; “Molecules”; “Aggregation States”; “Chemical Thermodynamics”; “Electrochemistry”; “Colloid Chemistry”; “Chemical Kinetics”; and
“Photochemistry”. Nevertheless, substantial portions of the
book have been completely revised and brought up to date.
For instance, the section on the wave-mechanical theory of
nonpolar bonding in the chapter on “Molecules” has been
enlarged, and a section has been added on electron spin
resonance, nuclear magnetic resonance, and the Mossbauer
effect. The reworking and expansion of the chapter on “Aggregation States”, in particular of the section on solids, also
deserves mention. The main subjects dealt with here are
methods of structure determination, ligand field theory, and
the structure of organic substances. The chapter on “Chemical Thermodynamics” has been to some extent rearranged
into a clearer and more logical form. One finds a highly
interesting - and important - concession to current events
in the changes and additions introduced in the sections on
“Production of Extreme Temperatures” and “Thermodynamics of Space Flight”. Apart from these more extensive
changes from the 8th edition, the authors have introduced a
large number of improvements in the interest of a concise
and up-to-date presentation of the facts.
In the Preface the authors pose the question whether the
field of physical chemistry still constitutes a scientifically
homogeneous entity, or whether it has already broken up
into independent parts roughly corresponding to the individual chapters of the book. The reviewer is in complete agreement with the authors when they suggest that the teaching
profession should not split up the subject in this way but
should continue to present physical chemistry as an entity for
as long as possible; after all, an understanding of one of its
constituent fields very often throws light on the principles of
others.
In a comprehensive textbook of physical chemistry the treatment accorded to each individual subject should of course
reflect the importance of that subject. On that score the book
lays itself open to criticism. In a number of the chapters the
reader is confronted with such a mass of detail that there is a
danger of its obscuring his appreciation of the whole. On the
other hand, at least a brief introduction to statistical thermodynamics, and certainly a more detailed treatment of wave
mechanics, would have been welcome. This would admittedly
have involved a departure from the somewhat elementary
mathematical treatment, chosen in accordance with the intention professed in the title. However, in view of the importance
that bonding theory now has for both organic and inorganic
chemists, a student will in any case have to be taught enough
of the mathematical treatment to enable him to go on to the
specialized literature without undue difficulty. The same
comment applies to the chapter on “Chemical Thermodynamics”.
The constantly recurring problem of whether a course in
physical chemistry should begin with a discussion of thermodynamics or the structure of matter is skilfully resolved by
first presenting an elementary description of the ideas and
procedures of thermodynamics, the kinetic theory of gases,
and quantum mechanics. The subsequent treatment of the
atom, the molecule, and aggregation states can be built up in
the first place on information already familiar, on experience,
and on intuition. Thus the somewhat more abstract thermodynamics is postponed till the second half of the book.
The very fact of the publication of the 9th edition of a work
that first appeared 42 years ago testifies to its usefulness to
the chemistry student. The beginner especially will be greatly
997
Документ
Категория
Без категории
Просмотров
1
Размер файла
170 Кб
Теги
chemistry, organometallic, powell, greek, book, coates, review, principles
1/--страниц
Пожаловаться на содержимое документа