book reviews organic molecnles." By unified approach, one assumes that finally the artificial separation of chemical and spectroscopic analysis of organic compounds has been overcome. In bhe opinion of this reviewer, the need for such a. "unified approach" ha? been great, t,he publisher's claim is just,ified nnd this book is therefore a very welcome addition to the t,exts in area of qnalibstive organic: analysis. Thus, the books by Dyer and by Silverstein end Bnssler adeqmtely handle spectrosropie analysis (though Dyer lacks a chapter on Mcms Spectrometry) but complelely ignore chemical tests. The st,andard "classical" text by Shriner, Fuson and Curtin extensively covers weh topics a? the use of solnbility in cla3sifying organic compounds, derivitiastion, the separst,ion af mixtures, etc., but treats spectroscopy in a perfunctory fmhion. Pasto and Johnson have, by and large, combined the best of bot,h approaches and, in fact, added chapters on Electron Paramqnetio Resonance (basically just an introduction to the technique) and an the Determinat,ion of Absolute Stereochemistry (a short but goad review). Furthermom, most of the 63 problems in the text likewise incorporate chemical as well ar spectral data, a desirable pedrtgogical approach which only recently became available in workbook form by Winstead. Space limitations obviously required
choices by the authors in coverage and their treatment of "classical" subject matter i3 not as broad a? that in Shriner, Fuson and Curtin. Extensive discussions on the separation of mixtures, the acidbase properties of organic molecules and the theoretical bases for various elassifieation tests are lacking. There are also no tables of compo~mdsand derivatives. On the other hand, there are two excellent introductory ehaptels dealing with the physical methods of separation, parification and charaeteriast,ion and the find chapter does a fine job of unifying the spectral and chemical characteristics of various functional groups. The chaptem on speclral methods are by and large complete and up-to-date. Near and far ir spectroscopy is discussed a5 are the nuclear overhauser effect and virtual coupling in the nmr section. Dyer's treatment of spin-spin eonpling is more extensive and a seotion on the use of solvent effects in rrmr would have been s welcome addition. A satisfyingly small number of typographical errors were found (through it is disconcerting to find Adnorptian Spectroscopy as a title in the Table of Contents). One must also take issue with the sbatement that the "triplet cannot be derived by direct excitation from the ground state." Infrared data are presented in microns and wavenumhers; nmr data in delta. units. I n sum, this book now appears to be the text of choice for a qualitalive organic analysis course in which B complete survey
of functional group characteristics is presented.
.
Hackh's Chemical Dictionary
Revised and edited by Julius Grant. 4th ed. McGraw-Hill Book Co., New 738 pp. Figs. and York, 1969. xi tables. 17.5 X 23.5 om. 829.50.
+
Ingo Hackh's original intent for his chemical dictionary was to "restate and redefine in simple, modern terms the phenomena of ~eienceand to connect these phenomena with one another. . . !' To follow this purpose forty years after the first edition requires definitions for 80,000 words, and preoise and ooneise writing style. Care has been taken to insure uniformity and a balance between British and Americsn usage. Although intended for the "working chemist," this volume will probably he of greater use to the layman who m u ~ deal t with chemist,ry, such as a secretary or editor. I t would also he a useful reference book for a general library.
JANET VANDOREN College of Wooster Wooster, Ohio
Volume 47, Number 7, July 1970
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