High Resolution NMR in Solids Selective Averaging

ForewordPrefaceI. IntroductionII. Nuclear Spin Hamiltonian A. Interactions of Nuclear Spins in Diamagnetic Nonconducting Substances B. Behavior of Internal Hamiltonians under Rotations III. Manifestations of Nuclear Magnetic Shielding in NMR Spectra of Solids A. General Remarks B. Single Crystals Available C. Only Powders Available D. Antisymmetric Constituents of sIV. Averaging in Ordinary Coordinate and Spin Spaces A. Introductory Remarks B. Averaging in Ordinary Coordinate Space C. Averaging in Spin Space D. Average Hamiltonian Theory E. Stochastic Averaging. Comparison with Coherent Averaging F. Further Examples of Averaging in Spin Space V. Detailed Discussion of Multiple-Pulse Sequences Intended for High-Resolution NMR in Solids A. Properties of the Ideal WAHUHA Four- and MREV Eight-Pulse Cycles B. Off-Resonance Averaging C. T¿ and T-; Heteronuclear Dipolar Couplings D. Pulse Imperfections E. What Is the Resolution-Limiting Factor in Multiple-Pulse Experiments? F. Further Propositions for Improving the Resolution in Solid State NMRVI. Applications of Multiple-Pulse Techniques A. Which Nuclei Are Candidates? B. Applications to 19F C. Applications to Protons D. SummaryAppendix A. Rotations of Angular Momentum OperatorsAppendix B. Time Ordering and the Magnus ExpansionAppendix C. Off-Resonance Averaging of the Second-Order Dipolar HamiltonianAppendix D. Phase TransientsSubject Index