chemical reviews - ACS Publications - American Chemical Society

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CHEMICAL REVIEWS Published bimonthly by the American Chemical Society at 20th and Northampton Streets, Easton,

R A L P H L. S H R I N E R , Editor Southern Methodist University, Dallas, Texas

Pennsylvania

75222

CHARLES R. BERTSCH, Senior Production Editor American Chemical Society Office, 20th and Northampton Sts., Easton, Pennsylvania

18043

Associate Editors RICHARD G. HISKEY, University of North Carolina, Chapel Hill, North Carolina ARNE N . LANGSJOEN, Gustavus Adolphus College, St. Peter, Minnesota NORMAN C. BAENZIGER, University of Iowa, Iowa City, Iowa NORMAN RABJOHN, University of Missouri, Columbia, Missouri

DAVID I. WEISBLAT, The Upjohn Company, Kala­ mazoo, Michigan EVAN C. HORNING, Baylor University, College of Medicine, Houston, Texas J. V. QUAGLIANO, Florida State University, Talla­ hassee, Florida CECIL

E.

VANDERZEE,

AMERICAN CHEMICAL SOCIETY

RICHARD H. BELKNAP Assistant Director of Publications Director of Research Journals

RODNEY N . HADER Executive Assistant to the Director of Publications

© Copyright, 1965, by the American Chemical Society. Second class postage paid a t Easton, Pa. This publication is authorized to be mailed a t the special rates of postage prescribed by Section 132.122. CHEMICAL REVIEWS is published by the American Chemical Society to provide authoritative critical reviews and comprehensive summaries of recent research in theoreti­ cal chemistry. The publication of reviews in various fields is scheduled about a year in advance. The Editor welcomes suggestions for timely reviews. All prospective authors should read Articles for Chemical Reviews—Suggestions to Authors in Chem. Rev., 64, 1 (1964), and follow the procedure for ob­ taining preliminary approval before preparing the manu­ script. Uninvited manuscripts will be examined by the Editorial Board but are placed a t the end of the prearranged schedule. Accepted articles for which immediate publication would seem important will be inserted in the next issue of t h e journal to go to press if the author is willing to pay the manufacturing cost. The insertion of such articles will not affect the publication of other manuscripts awaiting their turn, since the inserted articles will constitute addi­ tional pages to the volume without additional cost to the subscriber. Alterations in an article after it has been set in type are made at the author's expense, and it is understood that by entering such alterations on proofs the author agrees to defray the cost thereof. CHEMICAL REVIEWS articles are listed in Chemical Abstracts. Manuscripts submitted for publication should be ad­ dressed to Dr. Ralph L. Shriner, Editor-in-Chief. Corre­ spondence relating to editorial matters should be addressed to Research Journals Production Office, American Chemical Society, 20th and Northampton Sts., Easton, Pa. 18043. Senior Production Editor: Charles R. Bertsch. Assistant

of

Nebraska,

PUBLICATIONS

1155 Sixteenth Street, N.W., Washington, D. C. RICHARD L. KENYON Director of Publications

University

Lincoln, Nebraska

20036 JOSEPH H. K U N E Y Director of Business Operations Director of Publications Research

WILLIAM Q. H U L L Assistant to the Director of Publications

Senior Production Editor: Marianne C. Brogan. Assistant Editor: Eileen B. Segal. Business and Subscription Information Correspondence concerning business matters should be sent to the Subscription Service Department, American Chemical Society, 1155 Sixteenth Street, N.W., Washing­ ton, D. C. 20036. Changes of address for this journal must be received four weeks before the first issue is to go to the new address. Such notification should include both old and new addresses. Please enclose a mailing label from a copy of one of your ACS publications with your noti­ fication. Subscriptions should be renewed promptly, to avoid a break in your series. Claims for missing numbers will not be allowed (1) if received more than sixty days from date of issue plus time normally required for postal delivery of journal and claim, (2) if loss was due to failure of notice of change in address to be received before t h e date specified in the preceding paragraph, or (3) if the reason for the claim is "missing from files." Twenty-five copies of the issue in which the article ap­ pears will be furnished to the senior contributor free of cost. A table showing cost of reprints, with an order slip, is sent to the author. Owing to the nature of the articles that appear in the periodical, orders for more than 200 reprints are not accepted. Subscription price: One volume annually, beginning in February of each year. To members, $10.00 per year; to nonmembers, $20.00 per year. Postage to Canada and countries in the Pan-American Union, $1.00; all other countries, $1.50. Single copies: $4.00. Postage, single copies: to Canada and countries in the Pan-American Union, $0.15; all other countries, $0.20. Back issues from 1960 to date are available from the Special Issues Sales Department, 1155 Sixteenth St., N.W., Washington, D. C. 20036.