Coherence transfer between spy nuclei and nitrogen-14 in solids.
Coherence transfer from 'spy nuclei' such as (1)H or (13)C (S=1/2) was used to excite single- or double-quantum coherences of (14)N 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 (14)N in amino acids.
Cavadini
Simone
S
Laboratoire de Résonance Magnétique Biomoléculaire, Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, Batochime, CH-1015 Lausanne, Switzerland. Simone.Cavadini@epfl.ch
Abraham
Anuji
A
Bodenhausen
Geoffrey
G
D000409:Alanine / Q000737:chemistry; D002247:Carbon Isotopes / Q000737:chemistry; D003903:Deuterium / Q000737:chemistry; D005998:Glycine / Q000737:chemistry; D007554:Isotopes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009584:Nitrogen / Q000737:chemistry*; D009587:Nitrogen Isotopes / Q000737:chemistry; D010759:Phosphorus Isotopes / Q000737:chemistry; D013057:Spectrum Analysis
D002247:Carbon Isotopes; D007554:Isotopes; D009587:Nitrogen Isotopes; D010759:Phosphorus Isotopes; D003903:Deuterium; D009584:Nitrogen; D000409:Alanine; D005998:Glycine