inorganic chemistry in aqueous solution. by jack barrett

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In summary, this is an informative and timely book that describes the most important methods of synthesis and applications of ordered porous nano- structures. It is a good, though not comprehensive, reference work for researchers working in the field of ordered porous materials. Michael J. Sailor Department of Chemistry and Biochemistry University of California, La Jolla (USA) Inorganic Chemistry in Aqueous Solution By Jack Barrett. Royal Society of Chemistry, Cam- bridge 2004. 184 pp., softcover £ 14.95.—ISBN 0-85404-471-X This is Number 21 in the RSCs series of Tutorial Chemistry Texts , and both author and publisher are to be congratu- lated on a job well done. Two introductory chapters on water itself give clear accounts of its structure and solvating characteristics. They are followed by chapters on the forms of ions in solution, on thermodynamics and electrode potentials (a difficult topic that is very clearly put across), and on the stabilities (actually redox stabilities) of ions in solution. Then come three chapters of descriptive chemistry on the elements of the s and p blocks, the d block, and the f block. The emphasis of these three is on “periodicity”, and the trends and comparisons are well brought out. One cannot expect too much descriptive detail in a work of under 200 pages, but in fact a great deal has been achieved, and the level seems just right for the target audience—which I take to be mainly second-year under- graduates, though that doesn)t seem to be made clear. The aims of each chapter are set out in tabular form, the discus- sions are punctuated with worked exam- ples, and there are further study prob- lems with answers at the back of the book. There is a strong emphasis on sys- tematization and explanation, using thermodynamic analyses to identify fac- tors that contribute to particular chem- ical properties, such as solubility of salts or standard reduction potentials of metal ions. At a deeper level of inter- pretation, molecular orbitals and, where relevant, relativity theory, are deployed. At times I was wishing for more pictures and fewer numbers. Frost (volt- equivalent) diagrams are often more directly informative than Latimer dia- grams, though both have their uses. To take one small example, in describing the structure of [Mo 2 (OH 2 ) 8 ] 4+ , no doubt the Mo Mo bond is quadruple, and the description of the electron- count is clear, but is it not more clear to point out the eclipsed conformation of the Mo 2 O 8 skeleton, in contrast to the staggered conformation of, say, C 2 Cl 6 ? Mention of an oxygen-free molecule underlines what this book does not contain. It is, almost exclusively, an account of the elements in their states coordinated with water, as broadly defined to include oxo and hydroxo complexes and oxyacids. The strength of BrɆnsted acids, including the hydro- gen halides, is almost the only topic beyond this. Lewis acids and bases get a mention but hardly more, so although the factors affecting the stability of HF are well explained (including the recent discovery that in aqueous media the dominant species is actually the ion pair [H 3 O] + F ), there is nothing on the halide complexes of the metals, even through in some aqueous solutions of “salts” the complexes and ion pairs may be the dominant species. But it is best to do one job well, and if the last remark is a criticism, it really expresses the hope that another good book, on coordination chemistry in aqueous solution, is still to come. This is an excellent text, well written and attractively produced. Roderick Cannon School of Chemical Sciences University of East Anglia Norwich (UK) DOI: 10.1002/anie.200485370 Books 658 www.angewandte.org # 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Angew. Chem. Int. Ed. 2007, 46, 657 – 658

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Page 1: Inorganic Chemistry in Aqueous Solution. By Jack Barrett

In summary, this is an informativeand timely book that describes the mostimportant methods of synthesis andapplications of ordered porous nano-structures. It is a good, though notcomprehensive, reference work forresearchers working in the field ofordered porous materials.

Michael J. SailorDepartment of Chemistry andBiochemistryUniversity of California, La Jolla (USA)

Inorganic Chemistry in AqueousSolution

By Jack Barrett.Royal Society ofChemistry, Cam-bridge 2004.184 pp., softcover£ 14.95.—ISBN0-85404-471-X

This is Number 21 in the RSCs series ofTutorial Chemistry Texts, and bothauthor and publisher are to be congratu-lated on a job well done.

Two introductory chapters on wateritself give clear accounts of its structureand solvating characteristics. They arefollowed by chapters on the forms of

ions in solution, on thermodynamics andelectrode potentials (a difficult topicthat is very clearly put across), and onthe stabilities (actually redox stabilities)of ions in solution. Then come threechapters of descriptive chemistry on theelements of the s and p blocks, the dblock, and the f block. The emphasis ofthese three is on “periodicity”, and thetrends and comparisons are well broughtout. One cannot expect too muchdescriptive detail in a work of under200 pages, but in fact a great deal hasbeen achieved, and the level seems justright for the target audience—which Itake to be mainly second-year under-graduates, though that doesn+t seem tobe made clear. The aims of each chapterare set out in tabular form, the discus-sions are punctuated with worked exam-ples, and there are further study prob-lems with answers at the back of thebook.

There is a strong emphasis on sys-tematization and explanation, usingthermodynamic analyses to identify fac-tors that contribute to particular chem-ical properties, such as solubility of saltsor standard reduction potentials ofmetal ions. At a deeper level of inter-pretation, molecular orbitals and, whererelevant, relativity theory, are deployed.

At times I was wishing for morepictures and fewer numbers. Frost (volt-equivalent) diagrams are often moredirectly informative than Latimer dia-grams, though both have their uses. Totake one small example, in describingthe structure of [Mo2(OH2)8]4+, nodoubt the Mo�Mo bond is quadruple,

and the description of the electron-count is clear, but is it not more clearto point out the eclipsed conformationof the Mo2�O8 skeleton, in contrast tothe staggered conformation of, say,C2Cl6?

Mention of an oxygen-free moleculeunderlines what this book does notcontain. It is, almost exclusively, anaccount of the elements in their statescoordinated with water, as broadlydefined to include oxo and hydroxocomplexes and oxyacids. The strengthof Br:nsted acids, including the hydro-gen halides, is almost the only topicbeyond this. Lewis acids and bases get amention but hardly more, so althoughthe factors affecting the stability of HFare well explained (including the recentdiscovery that in aqueous media thedominant species is actually the ion pair[H3O]+F�), there is nothing on thehalide complexes of the metals, eventhrough in some aqueous solutions of“salts” the complexes and ion pairs maybe the dominant species.

But it is best to do one job well, andif the last remark is a criticism, it reallyexpresses the hope that another goodbook, on coordination chemistry inaqueous solution, is still to come. Thisis an excellent text, well written andattractively produced.

Roderick CannonSchool of Chemical SciencesUniversity of East AngliaNorwich (UK)

DOI: 10.1002/anie.200485370

Books

658 www.angewandte.org 2 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Angew. Chem. Int. Ed. 2007, 46, 657 – 658