- Email: [email protected]
Two-dimensional nuclear magnetic resonance in liquids
319
subject by an author whose contribution to zeolite chemistry started in the 1930’s and still continues as evidenced by the coverage given for topics published as late as mid 1982. The book commences with a concise review of the occurrence, classification and some properties of zeolites followed by a general introduction to the hydrothermal chemistry of silicates. These chapters are invaluable reviews in their own right. They present a useful and balanced account of interrelationship between the synthetic zeolites and their natural counterparts including geological importance and also with clay minerals. Further chapters deal with methods of zeolite synthesis (including ZSM zeolites) emphasising the relevance of the various silicon and aluminium sources available and the importance of such parameters as temperature, pH, precurosrs, and inorganic and organic cation templates. Many detailed examples of crystallization fields and zeolite transformations are included. The closing chapters deal with isomorphous replacement in zeolites and the preparation of salt bearing tectosiiicates. These, and earlier, sections are underpinned by comprehensive theoretical treatises where needed. All chapters are written with an economy of style and in concise language supported by clear, and relevant, diagrams. This book will become a required addition to the bookshelf of all zeolite chemists and will be of value to many scientists of other disciplines who are fascinated by the plurality of zeolite science. A. D. Two-Dimensional Nuclear Magnetic Resonance in Liquids, by Ad Bax, Delft University Press/D. Riedel, Dordrecht, 1982, pp. vi + 208, price Dfl. 70.00.
Most chemists would probably regard an ordinary NMR spectrum as being “two-dimensional”, whereas in fact since only one frequency axis is involved such spectra are more correctly described as one-dimensional. In 1971 Jeener pointed out that Fourier transform methods could be used to generate truly two-dimensional NMR spectra with two independent frequency axes, the actual display then consisting of a three-dimensional montage with the vertical direction corresponding to intensity. Experimental realisation of this proposal was achieved in 1975 by Ernst in Zurich, and since then there has been a flood of publications in this area both from Ernst’s own group and other laboratories of which Freeman’s in Oxford is one of the best known. Most of this work has appeared in highly technical original reports or in somewhat specialised review articles, and so there is a real need for a book on the subject which will provide a guide for the ordinary chemist who is already reasonably familiar with one-dimensional NMR methods. The present volume goes a considerable way to meeting this need, and provides a somewhat personal account of 2D NMR by one of its more successful proponents, Dr. Bax having worked with the Oxford group for several years.
320
After a general introduction to two-dimensional NMR in which the theory of the technique is outlined in fairly simple terms there are chapters on chemical shift correlation including the possibility of achieving broadband homonuclear decoupling, on J-spectroscopy, and on multiple quantum spectroscopy with especial emphasis upon the author’s own INADEQUATE experiment for the detection of adjacent carbon-13 sites in complex organic molecules. Two brief final chapters discuss the kinds of chemical problem that can be solved by two-dimensional NMR, and review the instrumental requirements, while three appendices fill in some of the theoretical background. This book will be of greatest use to those who already have some acquaintance with two-dimensional NMR and who require a guide to the bewildering array of experiments that are now available. However, it will also be of value to chemists who know nothing of the method but who want an indication of its potential. Dr. Bax has concentrated mainly on those aspects of the subject of which he has direct experience, and consequently there is rather little here on the important topics of chemical exchange and nuclear Overhauser effect spectroscopy which have been the especial prerogative of the Zurich group. Notwithstanding this the book is strongly recommended for its clarity of style and the easy pace of its explanations, a feature commonly absent from the primary literature in this area. It should be read by all who wish to be abreast of the latest developments in NMR. W. McF.
Scattering in Biology, Chemistry and Physics, A Royal Society Discussion, organised by Sir Ronald Mason, F.R.S., E. W. J. Mitchell and J. W. White, The Royal Society, London, 1980, pp. viii + 201, price $19.50.
Neutron
The book comprises papers read at a Royal Society Discussion Meeting held in 1979 and subsequently published in 1980 in the Philosophical Transactions of the Royal Society of London. The title of the book is fully justified by its extensive coverage embracing a variety of scientific fields. In structural crystallography the applications of neutron diffraction to the investigations of large molecular structures and to spin density distributions are exemplified. Diffuse scattering is related to defects and magnetic properties, while low-order systems are covered in papers on aqueous solutions, on adlayer structures on surfaces and on liquid crystals. Selected aspects of solid state physics are illustrated by discussions of antiferromagnetic insulators and of incommensurate structures. Progress in the application of neutron scattering in fundamental particle physics is described and assessed in papers on excitations in liquid helium-3 and on high accuracy determinations of the electric and magnetic moments of the neutron. Molecular biology is served by papers dealing with neutron diffraction studies of the fine structure of proteins and nucleosome core particles, the use of neutrons to study protein-RNA interactions and the application of high resolution
subject by an author whose contribution to zeolite chemistry started in the 1930’s and still continues as evidenced by the coverage given for topics published as late as mid 1982. The book commences with a concise review of the occurrence, classification and some properties of zeolites followed by a general introduction to the hydrothermal chemistry of silicates. These chapters are invaluable reviews in their own right. They present a useful and balanced account of interrelationship between the synthetic zeolites and their natural counterparts including geological importance and also with clay minerals. Further chapters deal with methods of zeolite synthesis (including ZSM zeolites) emphasising the relevance of the various silicon and aluminium sources available and the importance of such parameters as temperature, pH, precurosrs, and inorganic and organic cation templates. Many detailed examples of crystallization fields and zeolite transformations are included. The closing chapters deal with isomorphous replacement in zeolites and the preparation of salt bearing tectosiiicates. These, and earlier, sections are underpinned by comprehensive theoretical treatises where needed. All chapters are written with an economy of style and in concise language supported by clear, and relevant, diagrams. This book will become a required addition to the bookshelf of all zeolite chemists and will be of value to many scientists of other disciplines who are fascinated by the plurality of zeolite science. A. D. Two-Dimensional Nuclear Magnetic Resonance in Liquids, by Ad Bax, Delft University Press/D. Riedel, Dordrecht, 1982, pp. vi + 208, price Dfl. 70.00.
Most chemists would probably regard an ordinary NMR spectrum as being “two-dimensional”, whereas in fact since only one frequency axis is involved such spectra are more correctly described as one-dimensional. In 1971 Jeener pointed out that Fourier transform methods could be used to generate truly two-dimensional NMR spectra with two independent frequency axes, the actual display then consisting of a three-dimensional montage with the vertical direction corresponding to intensity. Experimental realisation of this proposal was achieved in 1975 by Ernst in Zurich, and since then there has been a flood of publications in this area both from Ernst’s own group and other laboratories of which Freeman’s in Oxford is one of the best known. Most of this work has appeared in highly technical original reports or in somewhat specialised review articles, and so there is a real need for a book on the subject which will provide a guide for the ordinary chemist who is already reasonably familiar with one-dimensional NMR methods. The present volume goes a considerable way to meeting this need, and provides a somewhat personal account of 2D NMR by one of its more successful proponents, Dr. Bax having worked with the Oxford group for several years.
320
After a general introduction to two-dimensional NMR in which the theory of the technique is outlined in fairly simple terms there are chapters on chemical shift correlation including the possibility of achieving broadband homonuclear decoupling, on J-spectroscopy, and on multiple quantum spectroscopy with especial emphasis upon the author’s own INADEQUATE experiment for the detection of adjacent carbon-13 sites in complex organic molecules. Two brief final chapters discuss the kinds of chemical problem that can be solved by two-dimensional NMR, and review the instrumental requirements, while three appendices fill in some of the theoretical background. This book will be of greatest use to those who already have some acquaintance with two-dimensional NMR and who require a guide to the bewildering array of experiments that are now available. However, it will also be of value to chemists who know nothing of the method but who want an indication of its potential. Dr. Bax has concentrated mainly on those aspects of the subject of which he has direct experience, and consequently there is rather little here on the important topics of chemical exchange and nuclear Overhauser effect spectroscopy which have been the especial prerogative of the Zurich group. Notwithstanding this the book is strongly recommended for its clarity of style and the easy pace of its explanations, a feature commonly absent from the primary literature in this area. It should be read by all who wish to be abreast of the latest developments in NMR. W. McF.
Scattering in Biology, Chemistry and Physics, A Royal Society Discussion, organised by Sir Ronald Mason, F.R.S., E. W. J. Mitchell and J. W. White, The Royal Society, London, 1980, pp. viii + 201, price $19.50.
Neutron
The book comprises papers read at a Royal Society Discussion Meeting held in 1979 and subsequently published in 1980 in the Philosophical Transactions of the Royal Society of London. The title of the book is fully justified by its extensive coverage embracing a variety of scientific fields. In structural crystallography the applications of neutron diffraction to the investigations of large molecular structures and to spin density distributions are exemplified. Diffuse scattering is related to defects and magnetic properties, while low-order systems are covered in papers on aqueous solutions, on adlayer structures on surfaces and on liquid crystals. Selected aspects of solid state physics are illustrated by discussions of antiferromagnetic insulators and of incommensurate structures. Progress in the application of neutron scattering in fundamental particle physics is described and assessed in papers on excitations in liquid helium-3 and on high accuracy determinations of the electric and magnetic moments of the neutron. Molecular biology is served by papers dealing with neutron diffraction studies of the fine structure of proteins and nucleosome core particles, the use of neutrons to study protein-RNA interactions and the application of high resolution