High Resolution NMR in Solids Selective Averaging: Supplement 1 Advances in Magnetic Resonance
Elsevier, 2 déc. 2012 - 204 pages
High Resolution NMR in Solids: Selective Averaging presents the principles and applications of the four approaches to high resolution NMR in solids — magic-angle sample spinning, multiple-pulse, proton-enhanced nuclear induction, and indirect detection methods.
Divided into six chapters, this book initially describes the tensorial properties of nuclear spin interactions in both ordinary and spin spaces. It then deals with the manifestations of nuclear magnetic shielding in NMR spectra of both single-crystal and powder samples, and then discusses the techniques for analyzing spectra and rotation patterns in terms of shielding tensors. A wide range of NMR phenomena that are result of intentional or natural, selective or unselective averaging processes and the average Hamiltonian theory that yields the inclusion of correction are covered. This book also provides a detailed discussion on multiple-pulse sequences intended for high resolution NMR in solids. The concluding chapter examines the applications of multiple-pulse techniques, with particular emphasis on measurements of 19F and 1H shielding tensors. Discussions on rotations of angular momentum operators; time ordering and the Magnus expansion; off-resonance averaging of the second-order dipolar Hamiltonian; and phase transients are covered in the supplemental texts.
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Chapter III Manifestations of Nuclear Magnetic Shielding in NMR Spectra of Solids
Chapter IV Averaging in Ordinary Coordinate and Spin Spaces
Chapter V Detailed Discussion of MultiplePulse Sequences Intended for HighResolution NMR in Solids
Chapter VI Applications of MultiplePulse Techniques
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anisotropy applied ﬁeld atoms axially symmetric axis Chem chemical shifts correction terms cross terms decay decoupling deﬁned deﬁnition density matrix dependence diamagnetic dipolar couplings dipolar Hamiltonian dipolar line broadening effects equation Euler angles experimental ferrocene ﬁnd ﬁnite ﬁrst ﬁxed ﬂip angle errors frequency Haeberlen high-resolution NMR hydrogen bonds I-spin internal Hamiltonians isotropic J. S. Waugh linewidth magic-angle magnetic ﬁeld magnetogyric ratio maleic acid malonic acid Mehring molecular molecular symmetry molecules motions MREV sequence multiple-pulse sequences NMR in solids NMR lines NMR signal nuclear spin nuclei observed off-resonance averaging oleﬁnic orientation parameters perpendicular phase transients Phys plane powder patterns proton pulse errors pulse imperfections pulse sequence resolution rf ﬁeld rf inhomogeneity rotating frame sample spinning self-decoupling shielded direction single crystal spectrometer spectrum spin frame spin space spin system spin—spin subcycle toggling frame tonian truncated tw/r vanishes WAHUHA cycle WAHUHA experiment WAHUHA four-pulse WAHUHA sequence