Continuing recent progress in the design of magic angle spinning MAS equipment now allows spinning frequencies of up to 35 kHz in commercial MAS probes. Such high frequencies make MAS an important tool for the manipulation of strong dipolar couplings, in particular when supplemented by suitable puls
Solid-State NMR Spectroscopy under Periodic Modulation by Fast Magic-Angle Sample Spinning and Pulses: A Review
โ Scribed by S. Hafner; D.E. Demco
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 431 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0926-2040
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โฆ Synopsis
Fast magic-angle spinning (MAS) holds promise for new approaches to pulsed high-resolution NMR in solids where homogeneous interactions dominate. Prerequisite for developing new pulse methods is the understanding of signal encoding by spin interactions under MAS conditions and of interferences between MAS and pulses. This review discusses corresponding strategies and techniques in a coherent way with particular concentration on homonuclear decoupling techniques for line-narrowing in solids.
๐ SIMILAR VOLUMES
29 Si magic angle spinning (MAS) NMR, 27 Al MAS NMR and 27 Al triple-quantum MAS NMR were used to study the dealumination of offretite occurring during hydrothermal treatment. Deformed tetrahedral ( Si-O-) 3 Al-OH species and two octahedral extra-framework species are formed during the course of th