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Book Review Kunststoff-Handbuch. Band VI Polyamide. Aufbau Verarbeitung Eigenschaften und Anwendung. (Handbook of Plastics Volume VI Polyamides. Constitution processing properties and applications.) Edited by R. Vieweg and A

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In the reaction of liquid bariuin/sodiurn solutions with nitrogen,
C. C . Addison, B. M . Dnvies, R. M . Liritonburi, and R . J . Pit//rum found rules that are valid for metal melts in general
(e.g. for Li/Na + N2, Li!Hg + N2, PblNa + CzHjCI). If the
binary melt has discontinuities in its liquidus curve or in its
electric conductivity at any composition, the composition of
the reaction product changes at these points of discontinuity.
Thus o n reaction until all the barium has been consumed, a
Ba/Na melt gives Ba3N (melts with ~. 8.5 atonis-”/;: of Ba),
Ba2N (melts with _ . 3.5 atoms-’< of Ba), and Ba3N2 (melts
with < 3.5 atoms-o/;; of Ba). The chemical reactivity
depends less on the electropositivity (which is approximately
the same for Na and Ba) than on the structure of the short-Jg.
range order zones. ; Chern. Commun. 1967, 211
[Rd 737 IE]
)’
[ ( B ~ u H ~ & M ]in
~ - the long-wave IR region (Hg-B: 225;
Cd-B: 235; Zn-B: 278 cm-I). i Chem. Commun. 1967,
216 --Jg.
[Rd 738 IE]
The stereoselective efficiency of hydrogenation catalysts has
been studied by T. J. Huwnrd and B. Murley. The hydrogenolysis of substituted benzyl alcohols o n Raney nickel catalysts
always leads to retention, and hydrogenolysis on Pd catalysts
to inversion. This is explained by the difference in orientation
of the O H groups, which are turned toward the surface of
the catalyst in one case and away from the surface in the
other. However, the hydrogenation (110 atm; 20’C) of ally1
alcohols such as ( I ) and (2) (see table) leads more o r less
Mercury derivatives of decaborane containing Hg-B 5 bonds
have been synthesized for the first time by N. N . Greenwood
and N . F. Truvers. Whereas HgC12 and HgBr2 are reduced by
decaborane BIOH14 in tetrahydrofuran, HgCl2 metalates
decaborane in ether:
CHjHgX (X-CI, Br, I) reacts with BloH13Na in ether to give
the mercury derivative BloH13HgCH3 in yields of 50 to
80 %,.The reaction of CH3MgX with decaboranylmagnesium
iodide (order of reaction rates: C1 > Br $ I) leads to the
complexes
Mg[(BloH&Hg] . 5 MgX2 . n ether, e. g.
Mg[(B10H12)2Hg].5MgClyIlether, which dissolve in water
without decomposing. The anion [(B10H12)2Hg]Z- could be
precipitated as the orange tetramethylammonium salt. The
asymmetric M-B stretching vibrations due to the tetrahedral
structures (MB4) can be detected for the complexes
predominantly to truns-alcohols (identified as phenylurethanes). This suggests coordination of the OH group with
the catalyst surface, i.e. interaction with the x-electrons of
the double bond and the lone electrons the oxygen; partial
inversion appears to occur only as a secondary process (the
ability to isomerize generally increases in the order
Ni<Ru<Pt<Rh<Pd).
/ Chem. and Ind. 1967, 73 -Jg.
[Rd 739 IE]
BOOK REVIEWS
NatiirIiche Proteinasen-Inhibitoren. (Natural Proteinase Inhibitors). By Rosemarie Vogel, I . Trautschold, and E. Werle.
From the series “Biochemie und Klinik”. Edited by G.
Weitzel and N. Zollner. Georg Thieme Verlag, Stuttgart
1966.1st Edit.,xii, 108 pages, 4 figures, 20 tables, D M 29.70.
The present monograph presents the first German-language
review of the now extensive field of natural proteinase inhibitors. The subject matter is divided according to the source of
the proteinase inhibitors: plant (from Leguminosae, potatoes,
grains, beets) ; microbial ; animal and human proteinase inhibitors (from ascarides, egg-white, milk, blood serum, urine,
organs, particularly endocrine glands such as the pancreas).
Each chapter is subdivided into sections on isolation, properties, composition, and inhibition spectrum. The monograph is rounded off by an introductory chapter on determination methods and definitions, a concluding chapter on
therapeutic possibilities, and an extensive bibliography.
The size of the bibliography is impressive and so far unequalled (more than 900 entria). The animal proteinase inhibitors, particularly those of theox, andthe serum proteinase
inhibitors are discussed in great detail, considerable space
being devoted to the work of the authors. The difficult characterization and differentiation of the proteinase inhibitors
has been very successfully accomplished, though many
simplifications in the case of the cattle proteinase inhibitors
that have become widely used in therapy (e.g. the ox-organ
inhibitor) make the dividing lines rather unclear. Research
in this field is advancing so rapidly that the monograph can
be recommended to all who are interested.
W. Appel
[NB 618 I€]
1008
Kunststoff-Handbuch. Band VI : Polyamide. Aufbau, Verarbeitung, Eigenschaften und Anwendung. (Handbook of
Plastics, Volume VI : Polyamides. Constitution, processing,
properties, and applications.) Edited by R. Viewey and
A . Miiller. Carl Hanser-Verlag, Munich 1966. 1st Edit.,
xvi, 698 pp., 477 illustrations, 111 tables, D M 140.-;
advance order D M 126.-; subscription price DM 112.-.
The present volume [*I about the polyamides demonstrates
how necessary it is to present this class of compounds in a
comprehensive handbook to all concerned with the subject.
The field “polyamides” has assumed such proportions that
it is difficult to be aware of all the relevant facts. For this
reason, the present volume, with a good index and appendix
tables, proves a n excellent reference work and is also suited
for the study of special points. The excellent subdivision of
the material facilitates the search fox answers to specific
problems which are not listed as such in the index.
Following an introduction, which mentions such topics as
history, nomenclature, and production, the book goes on to
deal with the formation of polyamides by polymerization and
polycondensation, their physical structure and melting
behavior, as well as the synthesis of and production processes
for polyamides in general. ‘The next chapter describes the
processing of polyamides, and includes an account of injection molding, screw extrusion molding, and casting. An account is also given of the processing of solutions and dispersions-aswell as forming, welding, adhesion, etc. The behavior
of polyamides toward moisture and water, chemical reagents,
and toward mechanical, thermal, and electrical influences is
dealt with in a section which provides a transition to the
Angew. Chem. infernat. Edit.
I
VoI. 6 (1967) / N o . I 1
chapter headed “applications”. A separate section is devoted
to the identification and analysis of polyamides.
The volume presents information on the manufacture, properties, processing, and applications of polyamides to manufacturers, engineers, and constructors as well as to chemists,
physicists, and students of these subjects. The reviewer feels
that the application to textiles does not really belong in this
volume but should be dealt with in a volume on textiles. To
summarize, the volume is no less than excellent and can be
0.H~~~
[NB 621a IE]
whole-heartedly recommended.
[*] Cf. Angew. Chem. 78, 832 (1966); Angew. Chem. internat.
Edit. 5, 855 (1966).
Kunststoff-Handbuch. Band VI1: Polyurethane. Herstellung,
Eigenschaften, Verarbeitung und Anwendung. (Handbook
of plastics, Volume VII : Polyurethanes. Production, properties, processing, and applications.) Edited by R . Vieweg
and A . Hoechtlen. Carl Hanser-Verlag, Munich 1966. 1st
Edit., xix, 767 pp., 419 illustrations, 137 tables, D M 180.00:
subscription price D M 144.00.
Polyurethanes are being used in ever increasing amounts,
primarily as elastomers and as foams. The great difference
between polyurethanes and other plastics, which are delivered
as finished polymers and only have to be worked, lies in the
fact that the former are actually produced on the premises of
the user by polyaddition. Since it is up to the user to obtain a
product of the desired properties by varying the types and
amounts of the components, the publication of the present
book is of great importance.
The work opens with an account of the chemistry and development of polyurethanes by their inventor 0.Buyer. This is
followed by a large chapter headed “starting materials” in
which the components (polyesters, polyethers, as well as
polyisocyanates) are dealt with, as are the auxiliary agents
(accelerators, retarders, propellemts, stabdrzers, softeners,
fillers, etc.). The next chapter is concerned with process
plant, process technology,i and m e t b d s of finishing; it contains much useful information for manufacturers.
The following chapters are devoted to the manufacture,
technology, applications, and testing Df eiastomers and hard
foams and soft foams; the text is we11 supported by illustrations. The irolame closes with an account of the use of polyurethanes as adhesives, for injection molding, and for the
finishing of textiles. A glossary of trade names facilitates use
of the book.
The publication of each new volume underlines the value of
this series, which contains such excellently presented information written by outstanding experts in the fields of construction, architecture, and engineering as well as chemistry.
Following the appearance of this excellent volume, one can
look forward with keen interest to the publication of further
volumes of the series. The volume under review is a n eminently successful work and can be warmly recommended to all
who are interested in this field. 0.fforn
[NB 621b IE]
Lehrbuch der organischen Chemie (Textbook of Organic
Chemistry). By H . Beyer. S . Hirzel Verlag, Leipzig 1966.
l l t h j l 2 t h Edit., xviii, 813 pages, 102 figures, 1 2 tables,
D M 24.-.
In the reviewers opinion this textbook, which is now in its
l l t h / l 2 t h edition, owes its popularity among students to two
factors: the first is its low price, and the second is the fact that
in spite of its size and content, the book is laid out and
written in a simple and readily understandable manner.
However, the frequent oversimplification can lead students
to false conclusions. For example, the student must regard
carbenes and nitrenes as isolable substances that exist as such,
and not as reaction intermediates that cannot be isolated. In
Angew. Chem. internat. Edit. / Vol. 6 (1967)
/ No. I 1
the formulation of onium (ammonium, oxonium) salts, the
repeated insertion of a positive charge outside the (unnecessary) brackets as well as on the N or 0 atom, so that two
positive charges are shown with only one negative charge, is
misleading. Several other points that would not be difficult
to improve could be mentioned. On the other hand, since
new editions of the book are published in rapid succession,
the author has been able to keep step with the results o f
research, as is particularly clear in the present edition. Many
sections have been updated or rewritten to take into account
developments in preparative and theoretical chemistry as
well as in industrial chemistry, the chemistry o f natural
products, and biochemistry. The references to literature
reviews and monographs may a l h prove very useful to the
advanced reader. It is to be expected that the book will
continue to enjoy a large readership.
F. Micheel
[NB 610 IE]
Glycoprotehs. Their Composition, Structure, and Function.
Edited by A . Gottschalk. BBA Library, Vol. 5. Elsevier
Publishing Company. Amsterdam 1966. 1st Edit., XVI,
628 pages, numerous figures and tables, Dfl. loo.--.
Our knowledge about the chemistry and biochemistry of the
sugar-protein complexes, which, 10 years ago, was based o n a
few experimental observations, has grown enormously in the
past decade. Findings concerning the chemical structure and
biological function of glycoproteins have led to the appearance of several thousand publications. This first attempt to
present a detailed survey of the present research position is
therefore very welcome. The editor, A . Gottschafk, did not
write the review himself, but divided the field into 12 sections,
each of which was dealt with in a self-contained article by a n
appropriate specialist, though a few sections consist of subchapters.
Gottschafkhimself contributes five sections, three in collabortation with other authors. Six contributions come from A .
Neuberger’s research group. Authors of other chapters are:
R. W . Jeanfoz, R . A . Gibbons, J. E. Eastoe, M . D . Mefamed,
P . Joflis, E. R . B. Graham, E. M . Press and R. R . Porter,
A . G. Beurn and W . C . Parker, M . Maxfiefd, M . Watkins,
M . T. McQuillan and V. M . Trikojus, H . Papkoff, E. Buddecke and L. Warren. Thus the present work is not a detailed
monograph, but is more of a handbook in which the specialist
can find a wealth of methodic details. It is to the editor’s
credit that this did not become a pure collection of experimental procedures. Instead, authors of great experience in
the field of glycoproteins discuss the scope and capabilities of
selected methods, and the resulting bobk h of much more
value to the reader Most of the authors have also attempted
to describe the chemical and biochpmica! reaction courses on
which the methods are hased in the light of the latest knowledge.
Special emphasis is placed o n physicochemical methods, to
which R. A. Gibbons devotes a n entire chapter in connection
with the determination of the ~ui.ity,uniformity, and molecular size of glycoproteins. In addition to a general inventory interspersed with questions of nomenclature, the
discussion includes the analysis of the various components
of this class of compounds and of the functional groups,
including amino-acid analysis and the bonding of the sugars
to one another and to the peptide chain. Much space is also
devoted to the amino acids and neuraminic acids, the glycoproteins, and the heterosaccharides that can be isolated fram
these. The last grou? of topics forms the subject c f a very
clearly written chapter by L. Warren. The reader who is
particularly interested in the chemistry of the glycoproteins
will find a n article by A . Meuberger, R . D . Marshall, and
A. Gottschafk on the conformation of the sugar components of this class of substances and the acid- and alkaliinduced rearrangements of these carbohydrates; this is the
only self-contained discussion of this subject that has been
published so far.
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