title: Double-quantum solid-state NMR of 13C spin pairs coupled to 14N.
abstract: We examine the double-quantum magic angle spinning NMR spectra of pairs of 13C nuclei coupled to one or more 14N nuclei. The experimental spectra of 13C(2)-glycine and glycyl-[13C(2)]-glycyl-glycine are used to demonstrate the sensitivity of the spectra to the orientation of 14N quadrupole interaction tensors and to the molecular torsional angles.
authors.affiliation: Physical Chemistry Division, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden.
authors.forename: C E
authors.initials: CE
authors.lastname: Hughes
authors.forename: R
authors.initials: R
authors.lastname: Pratima
authors.forename: T
authors.initials: T
authors.lastname: Karlsson
authors.forename: M H
authors.initials: MH
authors.lastname: Levitt
mesh_terms: D002247:Carbon Isotopes; D005998:Glycine / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008433:Mathematics; D015394:Molecular Structure; D009587:Nitrogen Isotopes; D011789:Quantum Theory; D013057:Spectrum Analysis; D019097:Spin Trapping
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D005998:Glycine