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2 A
ful if it placed more emphasis on cred ible features of the better x-ray deter minations which show anomalous bond lengths, and on the probable reasons for this. Also one would like to know in what ways x-ray results could be made more useful, since probably the greatest volume of research is done by this method. As far as the format of the book is concerned, all of the countless structural diagrams are presented in the clearest way possible in two dimensions. One would hope, however, for a few threedimensional stereo pairs for some of the more complex molecules, especially in the second chapter. This is a relatively easy thing to achieve now, and we should expect more of it in the better texts. The author and subject indexes are satisfactory, and the whole volume is indeed well packaged. Typographical errors occur on p. 73, line 9, where R' is printed instead of R 1 , and on p. 87, fourth line from the bottom, where double bands should pre sumably be double bonds. A happily atypical instance of shabby illustration occurs in chapter 1, figures 2 and 3, and in table 12. In figure 2, the points are very inaccurately plotted, and in figures 2 and 3 the dotted (smooth?) curves resemble the footsteps of an inebriated draftsman. In figure 3, one point is plotted for which no data are given in table 12, one point is not plotted for which data are given in table 12, and a third point is correctly plotted, but the data are incorrectly given in table 12. The M-Ring dis tance for the Rh compound should read 1.83 A, not 1.939 A, in that table. In addition to a critical summary of research already completed, "Perspec tives" gives a quite challenging picture of what structure analysts can hope to accomplish in the future. In doing so, the book certainly fulfills the editors' aims, and is highly recommended both to the general reader and to the special ist in structure analysis. A
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Herman A. Szymanski. vi + 11$ pages. Hertillon Press, Box 1677, Buffalo, Ν. Υ. υβίβ. 1967. Paverbound. $2. Reviewed by R. O. Crisler, The Procter ir Gamble Company, Cincin nati, Ohio. 45217 The successful interpretation of in frared spectra requires a thorough knowledge of organic chemistry, the availability of an extensive compilation of empirical and theoretical correlations between structure and spectra, and a collection of reference spectra. Train
ing a student in interpretation has gen erally been accomplished by presenting him with a very brief general abstract of this information, such as is done by Prof. Szymanski in this inexpensive paperbound book. The term systema tic in the title probably refers to the intent of the author to explain infrared spectral features in terms of atomic masses, bond angles, bond order, and vibrational coupling. The book is moderately successful in presenting an introduction to interpre tation, particularly in view of the au thor's recommendation that the book be used as a supplement to the under graduate organic or analytical course. It is more adequate than the sections devoted to interpretation in most in strumental analysis texts. The book would be more successful, however, if the complexity of the subject were more clearly indicated. The brief discussions accompanying the illustrative spectra do not explain what will certainly be puzzling features of the spectra to the novice. Despite Prof. Szymanski's claim that the student should be able to make (correct?) assignments for most of the strong bands present in a spec trum after completing the text, it doesn't quite come off. One should question the statement (p. 15) "The author cannot emphasize enough the fact that a scientist can use his knowl edge of organic chemistry to predict position of infrared absorption bands. Only the precaution of noting the pos sibility of coupling is necessary to keep him from being mislead (sic)." In view of the number of inadequately trained people making interpretations, it would seem wiser to induce a greater feeling of humility. The choices of illustrative spectra are sometimes puzzling. The first exam ples, chosen to illustrate correspondence between spectra of carbonyl com pounds, are reproduced in a form mak ing it difficult to make comparisons (one half the spectrum across a page). Later spectra, however, are reproduced in a single line. The spectrum of diethylene glycol monoethyl ether, p. 73, is labeled with the wrong structural formula. A discussion of the peroxide, (CH 3 ) 3 COOH, is unaccompanied by a spectrum, and is considered a tertiary alcohol. Amides are illustrated, in part, with two spectra of dimethylformamide. The discussion of ί-butyl alcohol refers to a strong band at 1145 which is not apparent in the spectrum. Because of its low cost and small size, this book will probably be used in un dergraduate education. I t is not likely to be of use to the person who intends to make a serious study of infrared spectra.
