A universal function is proposed to describe REAPDOR dephasing curves of an observed spin-1/2 nucleus dipole-recoupled to a spin-1 quadrupolar nucleus ((2)H or (14)N). Previous work had shown that, in contrast to REDOR, the shape of the dephasing curve depends on a large number of parameters includi
Measuring heteronuclear dipolar couplings for I=1/2, S>1/2 spin pairs by REDOR and REAPDOR NMR
β Scribed by Terry Gullion; Alexander J. Vega
- Book ID
- 104087563
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 324 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0079-6565
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π SIMILAR VOLUMES
Spin-echo, double-resonance (SEDOR) dipolar recoupling experiments are illustrated on an I = 1/2, S = 3/2 spin system for static and spinning samples. An 15 N-23 Na spin system is used to show that the simple pulse sequence is very effective in causing 15 N dipolar dephasing using either a 23 Na p/2
An analytical approach based on the average Hamiltonian theory is proposed for efficient calculation of the MAS NMR spectra of a dipolar-coupled homonuclear spin-(1/2) pair. For this purpose a superoperator formalism is developed which allows one to describe the spectra over a broad span of sample s