Solid state molecular motion in sucrose octapalmitate as studied by deuterium NMR spectroscopy.
Sucrose octapalmitate-d11, d24 and d248 have been synthesized. Using 2H NMR T1 and analyses of the temperature dependence of the lineshapes, a detailed description of the solid state molecular motional modes is presented. Activation energies for methyl and methylene group rotation in the fatty acyl chains have been determined. The sucrose moiety is found to be static on the solid state deuterium NMR timescale.
Buchanan
G W
GW
Department of Chemistry, Ottawa-Carleton Chemistry Institute, Carleton University, Ont., Canada. gwbuchan@ccs.carleton.ca
McManus
G
G
Jarrell
H C
HC
D003903:Deuterium; D005227:Fatty Acids / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D013395:Sucrose / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D013816:Thermodynamics
D005227:Fatty Acids; D013395:Sucrose; C013692:sucrose polyester; D003903:Deuterium