title: Cautionary note: linewidth effect in dynamic NMR.
abstract: In using NMR spectroscopy to evaluate the effects of kinetic processes taking place in the solute molecules being studied, one must estimate the inherent width w of each line, which is hidden from view throughout the kinetic thermal region due to the line-width broadening effected by the processes. We have herein built a self-consistent model function w(T) to attempt to evaluate the variation in the Arrhenius activation energy obtained with the model parameters present in w(T). As it turns out, a sizable number of such line-width parameters yields excellent spectral fits, and these lead to a considerable range of possible activation energies.
authors.affiliation: Dept. of Chemistry, University of Saskatchewan, Saskatoon, Canada. ohn.weil@usask.ca
authors.forename: J A
authors.initials: JA
authors.lastname: Weil
authors.forename: B C S
authors.initials: BC
authors.lastname: Wong
authors.forename: J
authors.initials: J
authors.lastname: Yu
mesh_terms: D000465:Algorithms; D001713:Biphenyl Compounds / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000706:statistics & numerical data; D008956:Models, Chemical; D010851:Picrates / Q000737:chemistry; D013696:Temperature; D013816:Thermodynamics
chemical_list: D001713:Biphenyl Compounds; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl