title: The 2D MAS NMR spin-echo experiment: the determination of 13C-13C J couplings in a solid-state cellulose sample.
abstract: A simple 13C MAS spin-echo experiment is applied to a partially 13C-labelled cellulose sample extracted from wood. 13C-13C J couplings are determined even though considerable chemical disorder leads to observed linewidths in the normal 1D 13C CP MAS spectrum which far exceed the J couplings. The fitting of the experimental data also allows the quantification of the degree of isotopic enrichment.
authors.affiliation: Department of Physics, University of Warwick, Coventry CV4 7AL, UK. S.P.Brown@warwick.ac.uk
authors.forename: Steven P
authors.initials: SP
authors.lastname: Brown
authors.forename: Lyndon
authors.initials: L
authors.lastname: Emsley
mesh_terms: D002247:Carbon Isotopes / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D014934:Wood
chemical_list: D002247:Carbon Isotopes; D002482:Cellulose