J. Inorg. Nucl. Chem., 1963, Vol. 25. pp. 139 to 141. PergamonPress Ltd. Printed in Northern Ireland
BOOK REVIEWS
M. STACEY,J. C. TATLOW and A. G. SHARPE" Advances in Fluorine Chemistry 203 + vii pp., Butterworth's Publication, London, 1960. 45s.
It is regretted that the rough draft of this review waspublished in thisjournal instead of the following final version submitted by the reviewer. The Halogen Fluorides--Their Preparation and Uses in Organic Chemistry (W. K. R. MUSGRAVE) This article contains a lot of useful information which is not embraced by the volume title, i.e.
ADVANCES in Fluorine Chemistry and is more properly described as a review. The author could have been very much more economical in his text--terseness with clarity leads to a far more stimulating text as is readily seen if Sharpe's article is compared with Musgrave's. The latter reminds me somewhat of MeUor. The sections concerned with the preparations of halogen fluorides serve to give the newcomer to the field an adequate indication of the state of knowledge. However, those on the uses of fluorine halides in organic chemistry are rather disappointing in that vague process details are presented where scientific results are expected.
Transition Metal Fluorides and their Complexes (A. G. SHARPE) Sharpe's article starts off in good style and the reader is left in no doubt as to what he is in for in the way of a chemical "treat". The article deals factually, concisely and in a very readable manner with advances in the fluoride chemistry of transition metals which have taken place in the last decade. He deals adequately with theoretical aspects of the crystalline state of these complexes, preparative methods and surveys of a wide range of compounds are presented in a well organized manner. This chapter provides very good reading for all students of inorganic chemistry, whether aged 18 or 80, and is a must for those with a particular interest in fuorides.
Fluoroboric Acids and their Derivatives (D. W. A. SHARPE) Like A. G. Sharpe's article, this one is very adequately presented. Of the fluoroborates, the tetrafluoroborate receives the lion's share of attention, but of course, this only reflects on their relative stabilities as compared with tri- and di-fluoroborates. Physical constants, crystal considerations and thermodynamic properties receive their due acknowledgement. Reactions, formations and descriptions of a large number of inorganic, oxonium and carbonium tetrafluoroborates are presented. Again a very strong recommendation is made as to the value of this article to the general and specialized reader.
The Electrochemical Process for the Synthesis of Fluoro-organic Compounds (J. BURDON and J. C. TATLOW) This article actually comprises more than the title suggests, since some (small) consideration is also given to the synthesis of inorganic fluorocompounds. Included are descriptions of apparatus, operating conditions and processes. The results of the latter are presented in a much more satisfactory manner than those of the first article and the reader feels that he is getting more scientific value for his money. Fluorination of a wide variety of compounds is considered. Whilst admitting that the electrochemical process is still an art in many respects, the authors nevertheless round off the article with a very useful discussion of possible mechanisms of this type of fluorination.
Exhaustive Fluorinations of Organic Compounds with High-Valency Metallic Fluorides (M. STACEYand J. C. TATLOW) The type of fluorination described here is probably familiar to the general reader, most of whom will be aware, for instance, of the fluorinating potentialities of CoF3. Whilst descriptions of apparatus and procedure etc. are in general satisfactory, it is surprising to find such an uninformative photograph (p. 171) included--a line diagram with scale tells much more. Fluorinations with CoF3, AgF~, MnF3, CeF4 and PbF4 are described and a brief mention is made of others, e.g. UF~ (the lower valency fluoride which is usually the by-product is here the main product). Again a useful discussion of possible mechanisms is included. F. S. MARTIN 139