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Book Review Chemie der Hauptgruppenelemente Ц Stand und Erwartung (Leopoldina Symposium Halle GDR October 9Ц12 1985). Edited by G. Fritz R. Hoppe and K

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tions, which affect the quality of the experimental results;
this would be especially useful for beginners and non-specialists. On p. 23 it is promised that “details of various experimental methods will be discussed elsewhere”, but unfortunately “elsewhere” turns out to be outside this book.
Another drawback is that the bibliography, which contains
more literature references than are cited in the text-in itself a plus point-gives no indication as to the literature
sources actually used in the text. A comment preceding
each of these citations would have served the purpose.
Finally, there is a criticism which is addressed more to
the publisher than to the author. Only purists would object
to the use of the shorter American spellings, but in this age
of word processing systems with in-built correction of errors the Springer Press might easily have avoided errors
like “revolutionalize” or “parameterization”, especially
when one takes into consideration the price of this book.
Despite these minor details, the book can be highly recommended, not only to those who use EXAFS or would
like to use it, but also to all physicists, chemists and biochemists who are looking for a work of reference which
will give them a feeling for this technique and its capabilities and limitations.
M. Koch [NB 808 IE]
EMBL Outstation Hamburg (FRG)
Chemie der Hauptgruppenelemente - Stand und Erwartung
(Leopoldina Symposium, Halle GDR, October 9- 12,
1985). Edited by G. Fritz, R . Hoppe. and K . Issleib. Wissenschaftliche Verlagsgesellschaft, Stuttgart 1985. vi, 397
pp. (Nova Acta Leopoldina, New Series no. 264), paperback, DM 36.00.--ISBN 0369-5034
The papers collected together in this volume were presented at a symposium whose purpose was to give an overview of the current situation in the chemistry of the main
group elements, and to evaluate the developments reported. In the preface the editors explain that for several
reasons it was not possible to treat the whole of the chemistry of the main group elements in a uniform way. The
choice of contributors resulted in certain topics being emphasized, but also gave benefits in depth of treatment.
The first quarter of the book is devoted to phosphorus
chemistry, with special emphasis on low coordination
numbers and on the formation and breaking of phosphorus-phosphorus bonds. It is fascinating to note how rapidly the chemistry of phosphorus with coordination numbers one and two, e.g. in pericyclic reactions, is developing: more is now known about Cope rearrangements in
phospha-compounds than in thia-compounds. Equally interesting are the analogies between the nucleophilic degradation of phosphorus and sulfur compounds, e.g. the
cleavage of cyclophosphanes by phosphinite to give phosphinyl phosphide, which is related to the formation of
thiosulfate by the reaction of elemental sulfur with sulfite.
In these phosphorus reactions ”P-NMR spectroscopy
might contribute further to an understanding of the chain
breaking and reforming steps. Some recent results (on alkylidynephosphanes) lead one to expect that connections
between the chemistry of main group elements and that of
transition metals in high oxidation states will become more
important in the future. Such connections are apparent, for
example, in the reactions of 2,2-dimethylpropylidynephosphane (a Becker phosphaalkyne) with 2,2-dimethylpropylidynetri(tert-butoxy)tungsten (Schrock carbyne complex),
or with TaCIs, giving a polycyclic cation (tBuCP),P@ of
the 1,3,5-triphosphatris(homocyclopropenylium)type.
The next part of the book contains papers on solid state
structural chemistry, with the emphasis on oxides and
Zintl phases, these areas of inorganic chemistry being
neatly brought together under the title “Zintl phases as
complex ligands”.
The second part of the book contains four papers on sulfur chemistry, and two each on boron chemistry and on
metals in low oxidation states. The book concludes with
four papers concerned with silicon. A neat link with synthetic organic chemistry is forged here, in the discussion
on acyllithium reagents.
A three-day symposium cannot, of course, cover everything in the chemistry of main group elements which is
currently of special interest. Nevertheless, important
trends such as reactive species, low coordination numbers
and novel types of multiple bonds formed by phosphorus,
sulfur and boron to carbon or nitrogen, the effects of
“inert” electron lone pairs in main group heavy elements,
cluster compounds, and molecular aggregates are all
treated by means of numerous examples.
This book, which contains the texts of 26 plenary lectures (three of them, by J. D. Corbett. N . N . Greenwood,
and D . Seyferth. being in English), and consists of 400
pages with nearly 800 literature references, gives a very upto-date survey of the basic research activities of wellknown inorganic chemists of the German-speaking world.
Its price is very reasonable (almost comparable in that respect to the inexpensive volumes 100, 200, and 300 of the
expensive Journal of Organometallic Chemistry), and this
readable and very useful volume can therefore be recommended for purchase even by advanced undergraduate
and post-graduate students who are familiar with reading
German, to increase the depth of their knowledge of inorganic chemistry.
Wolf- Wulther du Mont [NB 805 IE]
Fachbereich Chemie der Universitat Oldenburg (FRG)
Organometallic Intramolecular-coordination Compounds.
By I . Omae. Elsevier, Amsterdam 1986. x, 402 pp.,
bound, HFI 250.00.--ISBN 0-444-42584-5
The author has assembled together in this book a series
of review articles on the topic defined in the title, setting
out to bring them u p to date with the latest situation (as at
the editorial deadline of the end of 1984). He expresses the
hope that his book will be useful to undergraduate students, graduate students and research workers. It is arranged in eight chapters followed by two appendixes (1.
The Periodic Table and Electronegativity, 2. Atomic
masses, van der Waals radii, and Covalent radii) and a
subject index.
Chapter 1 deals with general considerations. According
to the definition of Biihr (l955), organometallic intramolecular complexes are compounds in which a metal atom is
covalently bonded to an alkyl or aryl group having a donor
atom as a substituent, and also forms a coordinative bond
to that donor atom, giving a chelate ring. Such intramolecular complexes are here further classified according to the
nature of the donor center. Following an account of the
history of such compounds, their general properties are
discussed, including ring size, structure, and the types of
reactions which produce them.
The chapters which follow relate to the various types of
donor centers involved in the coordinative bond. Thus. for
Angew. Chem. Int. Ed. Engl. 26 (1987)
No. 8
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