Heteronuclear decoupling interference during symmetry-based homonuclear recoupling in solid-state NMR.
- Authors
- Type
- Published Article
- Journal
- Journal of magnetic resonance (San Diego, Calif. : 1997)
- Publication Date
- Dec 01, 2005
- Volume
- 177
- Issue
- 2
- Pages
- 307–317
- Identifiers
- PMID: 16169757
- Source
- Medline
- License
- Unknown
Abstract
We examine the influence of continuous-wave heteronuclear decoupling on symmetry-based double-quantum homonuclear dipolar recoupling, using experimental measurements, numerical simulations, and average Hamiltonian theory. There are two distinct regimes in which the heteronuclear interference effects are minimized. The first regime utilizes a moderate homonuclear recoupling field and a strong heteronuclear decoupling field; the second regime utilizes a strong homonuclear recoupling field and a weak or absent heteronuclear decoupling field. The second regime is experimentally accessible at moderate or high magic-angle-spinning frequencies and is particularly relevant for many realistic applications of solid-state NMR recoupling experiments to organic or biological materials.