In-Vivo Magnetic Resonance Spectroscopy II: Localization and Spectral Editing

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Koichi Hatada, Tatsuki Kitayama

NMR Spectroscopy of Polymers places emphasis on the practical use of NMR spectroscopy in polymer chemistry rather than the theoretical treatments. Based on the authors' extensive experimental experience, topics covered include (1) experimental problems such as preparation of sample solution, selection of solvent, internal standard and tube, and contaminants in sample solution, (2) accuracy and precision of NMR measurements required in the analysis of polymer structure such as tacticity, copolymer composition and chain end structures, (3) volume magnetic susceptibility by NMR, (4) stereochemistry of polymer chains, chemical composition and comonomer sequence distribution in copolymers, and end groups and irregular linkages, (5) on-line coupled size exclusion chromatography(SEC) and NMR spectroscopy(SEC/NMR) in which an NMR spectrometer is set in the SEC system as a detector.

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Stephen R. Langhoff

The principal focus of this volume is to illustrate the level of accuracy currently achievable by ab initio quantum chemical calculations. While new developments in theory are discussed to some extent, the major emphasis is on a comparison of calculated properties with experiment. This focus is similar to the one taken in a book, Comparison of Ab Initio Quantum Chemistry with Experiment for Small Molecules, edited by Rodney Bartlett (Reidel, 1984). However, the phenomenal improvement in both theoretical methods and computer architecture have made it possible to obtain accurate results for rather large molecular systems. This is perhaps best illustrated in this volume by the chapter entitled `Spectroscopy of Large Organic Molecules' by Bjorn Roos and coworkers. For example, the electronic spectra of the nucleic acid base monomer structures shown on the front cover have been obtained using a fully correlated ab initio study. For researchers, teachers and students in chemistry and physics.

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Boris Imelik, Jacques C. Vedrine

This unique reference critically analyzes the use and application of all major physical methods for determining the structure and behavior of catalysts. Each chapter presents a detailed description of a technique and its theoretical basis, a definition of its field of application, and examples of validity and limitation. Extensive cross referencing between chapters ensures seamless continuity as well as a holistic view of the field. This new edition covers the substantial progress made since its predecessor in characterization of catalysts.

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T. P. Martin

Very recently it has become possible to produce and characterize large clusters containing an exact, predetermined number of atoms. Through these efforts it has become clear that clusters containing even as many as 20,000 atoms cannot yet be considered as being tiny crystals. Their structure is often icosahedral. Their electrons are organized into shells rather than bands. In many respects the clusters behave more like giant atoms than solids. The interest in clusters has grown explosively in the last few years and there has been no lack of conferences devoted to clusters in general. However, only a few groups have begun to develop the experimental and theoretical techniques needed for the study of clusters containing 100 or more atoms. In this book, representatives from these groups have contributed tutorial chapters explaining the methods they have developed. Audience: Scientists with little experience in clusters as well as cluster experts who wish to initiate experiments on large clusters.