title: Homonuclear zero-quantum recoupling in fast magic-angle spinning nuclear magnetic resonance.
abstract: Solid-state magic-angle-spinning NMR pulse sequences which implement zero-quantum homonuclear dipolar recoupling are designed with the assistance of symmetry theory. The pulse sequences are compensated on a short time scale by the use of composite pulses and on a longer time scale by the use of supercycles. (13)C dipolar recoupling is demonstrated in powdered organic solids at high spinning frequencies. The new sequences are compared to existing pulse sequences by means of numerical simulations. Experimental two-dimensional magnetization exchange spectra are shown for [U-(13)C]-L-tyrosine.
authors.affiliation: Division of Physical Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, 10691, Sweden.
authors.forename: Andreas
authors.initials: A
authors.lastname: Brinkmann
authors.forename: Jörn
authors.initials: J
authors.lastname: Schmedt auf der Günne
authors.forename: Malcolm H
authors.initials: MH
authors.lastname: Levitt
mesh_terms: D000409:Alanine / Q000737:chemistry; D002247:Carbon Isotopes; D005998:Glycine / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008433:Mathematics; D012694:Serine / Q000737:chemistry; D014443:Tyrosine / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D014443:Tyrosine; D012694:Serine; D000409:Alanine; D005998:Glycine