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Book Review Atomphysik und menschliche Erkenntnis (Atomic Physics and Human Understanding) by Niels Bohr. Series Die Wissenschaft (Science) Collections of monographs from all fields of natural science. Edited by W

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The racemization of an optically active fluorosilane was investigated by L. H . Sommer and €’. G. Rodeicdd. Optically
active methyl - c( - naphthylphenylfluorosilane (R3Si*F) is
quickly racemized when methanol is added to its solution in
pentane or t-butanol. The racemization is not caused by
traces of HF, for additions of H F retard the reaction,
nor is it due to the formation of Fa ions by ionization of the
R3Si*F, for the racemization is slower i n the strongly polar
solvent formic acid than in the weakly polar one pentane.
The methoxy derivative R3Si*OCH3 does not occur as an
intermediate, for in a mixture of R3Si*F and R3Si*OCH3
only the former is racemized. The reaction is of the first order
with regard to R$i*F, and of about the fourth order with
regard to CH3OH. An intermediate that corresponds to
these observations is the pentacovalent anion ( I ) , which is
OCH,
F...t._.......R ’
: \ /;
I ,Si
.
R I I... ......‘G
(1)
formed by addition of the C H 3 0 0 ion (present in the methanol owing to dissociation) to R3Si*F. Displacement of the
CH3O ligand from ( I ) is much faster than the alternative
reaction to form R3Si*OCH3 by elimination of Fa, for after
the time required to complete racemization, the methoxy
compound could not be found in the reaction mixture. The
formation of a hexacovalent intermediate is also possible,
though less Iikelj. / J. Amer. chem. SOC.85, 3898 (1963) 1
-KO.
[Rd 851/217 IE]
Porous glasses as stationary phases in adsorption gas chromatography were investigated bq Yu. I . Yuschin, S. f.Zlzdunov,
and A . V . Kiselev. The porous glasses obtained by treatment
of alkali borosilicate glasses with acids and water are characterized by a uniform pore structure which can be modified by
the composition of the starting glass and by the leaching conditions. Moreover, the surface of porous glasses may be easily
chemically modified. Glasses with very fine pores (pore diameter = 10 A) act as molecular sieves and permit the separation
of low boiling gases. Glasses of average pore diameter 30 to
100 A are suitable for the analysis of low boiIing gases and
vapors, e.g. light hydrocarbons. Large-pore glasses (pore
diameter 300-500 A) can be employed for the separation of
liquids with boiling points of up to about 200 “C. / 4th Symp.
on Gas Chromatography, Leuna (Germany) 1963, Abstracts
p. 402 / --KO.
[Rd 796/212 IE]
BOOK REVIEWS
Thermodynamische Elektrochemie (Thermodynamic Electrochemistry). By Erich Lunge and H . Gohr. Alfred Hiithig
Verlag GmbH., Heidelberg 1962. 1st Edit., 429pp., 193
figs., clothbound, D M 39.--.
There are textbooks where the voice of Science herself seems
to be heard, and others which make the reader believe, that
he is constantly face with the author. The present book is of
the latter kind. It was evolved from E. Lunge’s famous
article in Vol. 12 of the Handbuch der Experimentalphysik
(Handbook of Experimental Physics). Here we are confronted
with the outcome of decades of discussions between the author
and his students, in an attempt to put electrochemistry on a
firm footing of systematic thermodynamics. The concept
thermodynamics is treated generously, irreversible processes
being encompassed as well.
The introduction indicates the proper place of electrochemistry in the system of sciences. The text, composed together
with his collaborator of many years standing, H. Giihr,
begins with a discussion of single phases without and with
current-flow. This is followed by treatment of the equilibria of
simple electrodes and galvanic cells, and a section on thermocouples. An intermediate chapter describes the principles
of “concentration” and “activation” overvoltage. The main
part of the book is formed by the discourse on double and
multiple electrodes, single and twofold protective-layer
electrodes, including passivity, and by an additional chapter
on scrape effects.
The authors frequently repeat in a generalizing manner the
relations they have mentioned earlier, but this can only
be welcome to the reader. It offers him a chance to get used to
the terminology, which differs considerably from the customary jargon, and gradually to comprehend the rigorous
system of symbols given here entwined with indices. I n an
appendix E. Lunge has recapitulated his views o n several
general questions, particularly terminology, but not everybody will agree with this.
The book is not easy to read, but every electrochemist will
gain a solid foundation for his science from a tussle with it.
W. Juenicke
[NB 136/64 IE]
Atomphysik und menschliche Erkenntnis (Atomic Physics and
Human Understanding), by Niels Bohr. Series: Die Wissenschaft (Science), Collections of monographs from all fields
of natural science. Edited by W. Westphal. Verlag
Friedr. Vieweg & Sohn, Braunschweig 1958. 1st Edit.
XIII, 104 pp., 8 figs., bound, D M 9.40 (about $ 2.50).
Niels Bohr’s essays from the years 1933-57, which are collected in this volume, serve essentially to define the importance of the concept of complementarity introduced by
him into physics, and its applicability to other fields of
knowledge such as biology, psychology, sociology, and
anthropology. Ontologically the concept of complementarity is founded on the trend towards completeness manifested
in several ways by reality, a trend which makes it impossible
to draw a permanent sharp distinction between subject and
object. In biology the notion of complementarity leads to a
balance between the mechanistic and vitalistic attitudes.
For its application to psychology, Bohr points to the complementarity of thought and feeling, particularly between
the conscious deliberation on the motives of an action and
the experience of an emotion governed by the will. The
complementarity of instinct and reason is a frontier common to all the ultraphysical sciences mentioned. Lastly there
is a very general level, on which we find the complementarity between the use of any given concept and attempts to define it precisely. It is in this very connection that
Rohr manifests his sharp consciousness of the possibilities
and limitations of all scientific method.
E. Scheibe
[NB 143f65 IE]
Registered names, trademarks, e f c . used in fhisjournal, even without specific indication thereof, are not t o be considered unprotected by law.
0 1964 by Verlag Chemie, GmbH. - Printed in Germany by Druckerei Winter, Heidelberg.
All rights reserved. No part of this journal may be reproduced In any form whatsoever, e . g . by photoprint, microfilm, or any other means, without
written permission from the publishers.
Editorial Office: Ziegelhauser Landstrasse 35, Heidelberg, Germany, Telephone 24975, Telex 04-61 855, Cable address: Chemieredaktion Heidelberg.
Chief Editor: W . Foerst . Editor: H . Grunewald.
Publishers: Verlag Chemie GmbH. (President Eduard Kreurhage), Pappelallee 3 , Weinbeim/Bergstr., Germany, and Academic Press Inc. (President
Walter J . Johnson), 1 1 1 Fifth Avenue, New York 3, N.Y., U.S.A., and Berkeley Square House, Berkeley Square, London, W. 1, England.
Correspondence concerning advertisements should by addressed toVerlag Chemie, GmbH. (Advertising Manager W.Thiel), Pappelallee 3, WeinheimBergstr., Germany, Telephone Weinheim 3635, Telex 04-65516. Cable address: Chemieverlag Weinheimbergstr.
244
Angew. Chem. internut. Edit. / Vol. 3 (1964) [ N o . 3
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