book reviews There are weak poillls which retlrm the nseful~,oss of the book. Most of the referetlces are for works poblished hetween 1941) and 11360. Althongh t h e principles are still valid and the illustrat.ive examples are still appropriate, the reador will not be directed t o the morc yecent books and review articles. There are statements in the text which o ~ w~ o ed d not expect for a book with a preface having a 11366 date. One is the comment that elemel~t104 has not yet been synthesized. There are also omissions which may not be apparent t o a reader outside of t,he United States. For example, Pu-Be neutron sources are not mentioned in the discussion of laboratory neutron sources. The organization of the texl is awkward. Material relevant t o a given topic is frequently scattered thro~lghoot several chapters. The authors have attempted to alleviate the problem somewhat by citing coverage of tho same topic in esdier and later chapters. Unfortunately the index is not always a reliable guide t o the location of relevant material. I consider the hook to bo a valuable addition t o the standard works on noclear ehemisbry, radiochemistry and isotope technology. I expect t o recommend i l t o (1) students who wish t o do further reading on the uses of isotopes in chemistry t o supplement the brief treatment
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Journal o f Chemical Education
chock-full of references to post-1950 literat w e ; for example, the final two chapters on pi-electron systems (obviously a. special interest of the author) contain morc than 250 w c h citations. Rlathemstieal langimge characteristic of corrent research is introdneed reasonably early (projection operators on page 224, density matrices on page 354) and is subsequently used without apology (or need of apology). I n a style obviously origind, Professor Pilar introduces in the first two-thirds of the book many of t h e usod topics in a H E R ~ EM.I ~CLARK text of this title: origins of quantum theRensselaer Polylechnic Inslilule ory, elements of wave rnechnnics and Troll, Areto York 12181 simple applications, operetoys, angular momenta, matrix theory, group thcory, electron spin and many-electron atoms, Elementary Quantum Chemistry the variation method and pe~.twbalion theory, and elementary molecnlar s t n a Fmnk L. Pilar, Univemity of New tnre. Remaining chapters contain dismtsHampshire, 1)nrha.m. McGm,w-11iIl siolls of again usual topics: diatomic and Eaok Co., New York, l!l68. 726 pnlyatomic molecules, molecular orbital pp. 17.5 X 23.5 em. $1;,.50. and vale~meband theories and pi-electron systems, integrated, however, with t,opics "Elementary Qwmtnm Chemistry" is from the current literature not usually x first-class texl, meriting compnrisan f o ~ ~ niud introductory texts (and in some with the classics ill the field by Nyring, cases not in any texts at all). A few Walter and Kimbell, and Panling and selected examples are: in Chapter 13, s Wilson. Professor Pilar aims "lo provide lucid and lengthy (45 page) study of the a guide to the campnteliage quantum Ilartree-Faek self-eonsisle~~t-field method theory of atomic and molecular strueand cor~.elntian energy, incloding t.he twe," proceeding "on the lowest ppssible Siualwkhl formulaliotl oi pair correlation level a t which triviality and misrepreenergies, lloothaan's eqnations and Mcsentation can he avoided more often than not!' These two qoot.ztinns pinW e e n y ' ~approach to their solution; iu Chapter 16, a discussion of forces in molepoint what. this reviower feels are the c~desand the genersliaed I-lellmann-Feynrunique features of the text: its modern research flavor and rigor. The book is man theorem and of Mofitt's method of mrmally given in a n iutroductory course in nuclear chemistry, (2) stodents plaw ning t o work on a laboratory project or thesis involving t,he m e of isotopes, and (3) stndents (including gradusle stndents) and other facolty memhers who inquire about the possible w e of isotopes t o resolve s. difiierdty in a research project already underway. Ifopefullv, i t will be nossible t o enlist the aid of i k r e s t e d &,dents in npdsting t h e references and in improving the index.
atoms-in-molecules; in Chapter 18, comments on the Hoflmann extended-Huckelmolecr~lar-orbital(EIIMO) method and a non-trivial treabment of the free-electronmolecular-orbital method; in Chapter 1'3, an adequate survey of the Parr-Pariser and Po& pi-electron approaches, the Lijwditl alter~lant-molecnlar-orbital method and Ilewar's split-p-orbitd method. Many of the discussions of these research-oriented topics are necesswily terse, hut generally suffice to give the reader a qualitative miderstandiug of current wo1.k in these highly sophisticated areas. Among the important applications of qoantam chemistry itnfortnnately not touched an in the text are: inl.ermolecnlar iarees, crystal and ligilnd field theory, aud theoretical chemical kinetics. The book should serve as an excellent basis for a. one-year introductory graduate course for serious students of physical chemistry or chemical physics. Although the author states t,hat "there appears to be no reason why the material should not be suitable for advanced undergraduate classes," this reviewer feels t,hat the scope and rigor of the hook would prohibit it,s appreciation b y all hut honors .students in an undergraduate chemistry program. I t would however be suitable for a senior level course in a chemical physics program.
Titration in Non-Aqueous Media
1. Gyenes, Chemical Works, Gedeon Richter Ltd., Budapest. Translation edited by D. Cohcn and I . T . Miliar, University of Keele, Straffordshire, England. D. Van Nostrand Co., h e . , Princeton, New Jersey, 1968. xiii f 461 pp. Figs. and tables. 17.5 X 24.5 em. $14.
This is an expanded English edition of the earlier book pnblished in Hungarian in 1960. The first chapters deal with theoretical aspects of nonaqneoos acid-base titrstions including historical development of acid-base concepts, effects of molecular stroetnre and solvent^ on the strength of acids and bases, and general properties of solvents on the strength of acids and bases. The next chapters cover purification and general properties of solvents, preparatiou of acidic and basic titrants, potent,iometrir end point detection, indicators, and photomet,ric end point detection, indicators, and photometric end points. The next, s ~ v e r a lchapters are concerned with titration of various acidic and basic organic substances. Several chapters are devoted largely to indirect seid-base methods for deierminntion of common organic functional granps. Chapter 20 deals with redox t,it,rat,ions hl nonaqueoos media, and AUDREYL. COMPANION chapter 30 covers compler-formatiarr titrations in nonaqneons media. Illinois Instilute of techno log^ This book r o n t ~ i n sm w h i w e f ~ ~info1:l Chicago mation, sud in thissenseis n welcome a d d (Continud on page A9$.$)
Volume 45, Number 1 1, November 1968
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