Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5407411 | Journal of Magnetic Resonance | 2008 | 5 Pages |
Abstract
Coherence transfer from 'spy nuclei' such as 1H or 13C (S = 1/2) was used to excite single- or double-quantum coherences of 14N nuclei (I = 1) while the S spins were aligned along the static field, in the manner of heteronuclear single-quantum correlation (HSQC) spectroscopy. For samples spinning at the magic angle, coherence transfer can be achieved through a combination of scalar couplings J(I, S) and second-order quadrupole-dipole cross-terms, also known as residual dipolar splittings (RDS). The second-order quadrupolar powder patterns in the two-dimensional spectra allow one to determine the quadrupolar parameters of 14N in amino acids.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Simone Cavadini, Anuji Abraham, Geoffrey Bodenhausen,