BOOK REVIEWS ical and more concerned with the physicists's point of view rather than that of the materials scientist.
C. CARLSTON RICHARD Amojet-General Covoration Azusa, California The Chemistry of Rhenium
K . B. Lebedev, translated by L. Ronson in collaboration with A . A . Woolj. Butterworths, London, 1962. x 105 pp. Figs. and tables. 14 X 22 cm. $7.50.
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This short volume differs from the previous monographs of Trihalat (1957) and Druce (1048) in that the main emphssis is on the occurrence, separation, and production of the element. The only chemistry considered is that related to production processes. Since the original Russian publication is based on the Literature up to 1959, this volume is already slightly out of date. Although naturally the Russian practice is emphaeized, the foreign literature is adequately covered. Information an the prediction, and discovery of rhenium are very hriefly covered in Chapter I. Chapter I1 contains considerable detail on the properties of rhenium metal, its alloys, oxides, and perrhenates; while the uses of rhenium are discussed in Chapter 111. Production data are also included in Chapter 111, although the date. for Russia are curiously missing. The geochemistry of rhenium and the recovery of rhenium from molybdenum sources are discussed in Chapter IV. The methods used for the extraction of rhenium compounds, complete vith flow sheets, are discussed in Chapter V. Chapter VI is devoted to methods of reduction to the element. Chapter VII briefly deals with the analytical chemistry. Although the reviewer cannot vouch for the accuracy of the translation, the English version certainly is readable. The average chemist probably uill not he interested in purchasing this book unless he is specifically interested in this element.
EDWIN M. L*RBEN University of Wisconsin Madison
Phthalocyanine Compounds
Frank H . Moser and Arthur L. Thomas, Standard Ultramarine and Color Co., Huntington, West Virginia. ACS Monograph No. 157. Reinhold Puhlishing C o p , New York, 1963. xiii 365 pp. Figa. and tables. 16 X 23.5 cm. $18.
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The only chromophore discovered to date in the 20th century is "Phthalocyanine." The name, coined by R. P. Linstead, means "rock oil dark blue." The authors have performed a major service by condensing its literature, to mid-April, 1962, into book form. Long lists of references follow each chapter. (Continued on page A976)
A974
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Journol of Chemical Education
B O O K REVIEWS The first two chapters give u brief account of the accidental discovery of this useful pigment, and detail the dctermination of the structure of the phthalneynninrs and their relation to rhlorophyll and hemin. The physical properti~rof phthaloryanines are described in term3 of X-ray rr,vsbitl data; t,he importanre of, and the differences between, the alpha, bets, and gamma, forms of t,hepigment are explained. Ihcussed among other aspects are the optical, electrical, and photochemical behavior. Chapters 3 and 4 r w i e x the numerous ways of preparing phthalocymine and its derivatives on lahorabory and factory scales. Finishing processes needed for maximum enl
