title: Carboxyl group orientation in K-palmitate/water using 13C double resonance spectroscopy.
abstract: 13C-NMR is used to probe the motion and orientation of the carboxyl group in a 70% potassium palmitate/30% water mixture. An increase in delta sigma with increasing temperature corresponds to a change of orientation of the carboxyl group. Comparison with 2H-NMR and lineshape simulations show that near 57 degrees C the molecules exchange between two orientations at a rate between 10-500 Hz.
authors.affiliation: Physics Department, University of Guelph, Canada.
authors.forename: D B
authors.initials: DB
authors.lastname: Langlais
authors.forename: J H
authors.initials: JH
authors.lastname: Davis
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009038:Motion; D010168:Palmitates / Q000737:chemistry*; D013696:Temperature; D014867:Water
chemical_list: D010168:Palmitates; D014867:Water