Two-dimensional magic-angle spinning isotropic reconstruction sequences for quadrupolar nuclei
| Autor: | Bruno Touzo, J. Virlet, Dominique Trumeau, Philip J. Grandinetti, Dominique Massiot, Pierre Florian, J.P. Coutures |
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| Rok vydání: | 1996 |
| Předmět: |
Coupling
Physics Nuclear and High Energy Physics Crystallography Magnetic Resonance Spectroscopy Nitrates Radiation Isotropy Phase (waves) General Chemistry Rubidium Absorption Pulse (physics) Isotopes Magic angle spinning Aluminum Silicates Condensed Matter::Strongly Correlated Electrons Atomic physics Crystallization Instrumentation Quantum Spinning Algorithms Aluminum Spin-½ |
| Zdroj: | Solid State Nuclear Magnetic Resonance. 6:73-83 |
| ISSN: | 0926-2040 |
| Popis: | Two-dimensional magic-angle spinning (triple quantum, single quantum) correlation pulse sequences and phase cycles based on the technique of Frydman and Harwood for the reconstruction of the isotropic spectrum of half-integer spin quadrupolar nuclei broadened to second-order are described. These sequences provide pure absorption mode two-dimensional lineshapes and increased sensitivity. Experimental examples on spin I = 3/2 (87Rb in RbNO3) and I = 5/2 (27Al in NaSi3AlO8) are presented. The isotropic chemical shift and quadrupolar coupling parameters could be obtained from a simple analysis of the triple quantum filtered single quantum magic-angle spinning cross-sections. |
| Databáze: | OpenAIRE |
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