вход по аккаунту


Book Review Elementary Practical Organic Chemistry. Part 1 Small Scale Preparations. By A. I. Vogel

код для вставкиСкачать
extraction of the elements, (8) Extraction with solvents and
ion exchange, (9) Comparative chemistry of representative
elements, (10) Comparative chemistry of the transition
elements. Each chapter has an appended list of references for
further study.
Generally speaking, there is a need for a short and modern
introduction to inorganic chemistry in the German language,
and a German translation of Bell and Loft’s book could fill1
this gap were it not for the assumption of too much prior
knowledge. For example, the use of radioisotopes in elucidating the course of chemical reactions is discussed o n p. 21,
without previously introducing the reader to the chemical
symbolism or to the formulation of reaction equations.
Surprising use is made of Bohr’s model of the atom, while
subsequent discussion suggests that the exclusive use of the
wave-mechanical model is considered suitable. The general
principles are clearly brought out and the discussion is o n a
relatively high level. Ionic and covalent bonds are treated i n
detail and with clarity. The relationships invdved in metal
bonding are discussed separately,and, together with van der
Waals forces, are postponed until Chapter 4.
The structural chemistry of solids is discussed on classic
examples, but many classes of compounds. e.g. the silicates,
are dealt with too summarily. Some Iecent developments
have been ignored. For example. the acid-base theories
contain no zeference to the Schwarzenbach-Pearson definitions. In the same way, the Na-NH3 system has not been
treated according to the most recent results..
Only about a third of the book is devoted to “descriptive
chemistry”. Thus, for example, ammonia synthesis is dealt
with in four lines. Nonetheless, these sections similarly contain
many interesting cross-references.
The book cannot be recommended unreservedly as an “introduction” to inorganic chemistry, but certainly as a supplement to standard textbooks. I n this respect the study of
“Bell-Lott” is likely to be of considerable value to students
of chemistry and especially to aspiring chemistry teachers.
H . Nofh [NB 641 IE]
The Chemistry of Organic Sulphur Compounds, Vol. 2. By
N . Khnrasch and C. Y .Meyers. Pergamon Press, Symposium
Publications Division, Oxford 1966. 1st Edit., vii, 465
pp., numerous figures and tables, bound €7.
Volume 2 of this series of monographs on organosulfur
chemistry deals predominantly with rather specialized subjects in its 15 chapters. The following are discussed, in the
order given: Electron relationships and bond properties of
selected sulfur compounds ( H . A . Bent), mechanisms of
desulfurization by Raney nickel ( W . A. Bonner and R . A.
Grimm), isomerization of organic thiocyanates ( A . Fuva),
newer aspects of the chemistry of olefinic sulfides ( L . Goodmun and E. J . Reist), desulfonylation ( J . L. Kice), polyfluoroalkyl derivatives of s d f u r ( R . E. Banks and R . N . Huszeldine),
properties of I-alkynylthioethers ( W. Drenth), anionic oxidation of thiols and cooxidation of thiols with olefins ( A . A .
Oswald and T . J. Wallace), radical addition of thiols to olefins
and acetylenes ( A . A . Oswddand X . Griesbaum),the chemistry
of the 1,Zdithiol ring ( N . Lozac’h and J _V i d e ) , thiohydantoins (J. T. Edward), thiophosgenes (H.TilleJp, alkaline decomposition of aliphatic disulfides (J. P. .Danehy), reactions
of cyanides with cystines and cystine peptides ( 0 . Gawron),
and finally oxidation of disulfides hhth special reference to
cystine ( W . E. Savige and J . A. Moclaren).
This survey demonstrates that the authors were1 not restricted
in the choice of their subject matter the consequently
somewhat fragmentary character of the work was deliberately
allowesd for, because the issue of further volumes (volume 3 is
already in the press) is intended to fill in some of the gaps.
The very welcome list of literature references in the appendix
deals with important work of the past few years. Anyone
interested in these special fields will undoubtedly benefit by
reading the book.
J . Gosselck
[NB 630 LEI
Angew. Chem. internat. Edit. / Vol. 6 (1967) / No. I2
Elementary Practical Organic Chemistry. Part 1 : Small Scale
Preparations. By A . I . Vogel. Longmans, London 1966.
2nd Edit., xx, 435 pp., numerous ngures, bound 35s.
N o change has been made in the basic conception of the book
for the second edition. The first chapter deals with the theoretical principles of procedures such as distillation, crystallization, and sublimation, as well as the mode of action of
drying agents.
This is followed by a detailed description of experimental
techniques (about 125 pages). Numerous instruments are
illustrated and their use is described, and even the bending of
glass tubes and the use of air driers are not forgotten. The
various types of stirrers are described, as well as methods for
the determination of melting points.
The preparations are divided in the usual manner into aliphatic (Chapter 3) and aromatic compounds (Chapter 4). As
a result of this arrangement, the aliphatic and aromatic
carbonyl compounds are discussed separately, and too little
space is devoted to the effects of substihents on the reactivity
of the CO group. Reactions and coqpbunds that do not fit
into the above scheme are described iniGhapter 5 , which ends
with some very goon experiments I bn chr0tt)atographic
methods and electrophoresis. Most Of ‘the preparations are
preceded by a short description of.’therelevant reaction mechanisms. The selection of‘the preparations and reactions could
have been rather more,up-to-date.
The present nook is what students call a cookery book Zb the
best sense of the word. The procedures given are, proven,
and can be carried out even by beginners A number of preparations from Vogel should be Carrie& out by every student,
as is already usual in many places. However, it can be recommended as a practical handbook only if used in conjunction with a second book that includes spectroscopic methods
for structural elucidation and for the characterization of
substances used and prepared, as well as more modern prepH . J . Bestmnnn
[ N B 592 IE]
arative methods.
Elementary Practical Organic Chemistry. Part 2. Qualitative
Organic Analysis. By A . I . Vogel. Longmans, London
1966. 2nd Edit., xv, 431 pp. numerous figures and tables,
The book opens with a short introduction on the qualitative
analysis of organic compounds and the determination of
physical constants.
The text begins with the determination of melting point in
all its aspects with Vogel‘s well known thoroughness, including illustrations and a discussion of the most common
apparatus. Whether it is necessary to describe the drawing
out of a melting-point tube at epic length is debatable. The
determination of boiling point follows. Here the mention
of the Siwoloboff method for small amounts of liquid is
welcome, because it is n o longer generally known to the
probationer. Measurement of density and refractive index is
then discussed. The chapter concludes with the determination
of optical rotation followed by a n unfortunately rather short
section on rotatory dispersion.
Chapter 2 is devoted to the qualitative analysis of the elements, but only C, H, N, S, and the halogens are described.
A useful chapter o n the solubility of different classes of
substances in diverse solvents follows. 120 Dages are then
devoted to the reactions and characteration of various
organic compounds. The characterization of a substance by
the preparation of a derivative has unfortunatdly come into
some disrepute today This chapter ,is warmly recommended
for constant use to all d.emooistta‘tors. The preparation of
crystalline derivatives-of olefins by reaction with tP-dinitrophenylsulfenyl chloride is likewis&desonped, as is the often
very useful cleavage reaction of ethers with 3,5-dinitrobenzyl
chloride in the presence of zinc hloride. I n many cases a
procedure is given for preparing the reagents. These 120 pages
are a rich source for every chemist who does not wish to
rely solely o n spectral results.
Без категории
Размер файла
161 Кб
chemistry, scala, preparation, practical, part, book, organiz, small, elementary, vogel, review
Пожаловаться на содержимое документа