A proton magnetic resonance study of aqueous N-methylacetamide solutions

by Hinton, James F.; Amis, E. S.

The proton magnetic resonance of aqueous N-methylacetamide solutions has been studied as a function of the mole fraction of water and as a function of temperature. Shifts to lower applied fields with a decrease in temperature were observed for both the water and N-H proton resonances. An increase in water concentration was found to produce a high field shift in the N-H proton resonance indicative of a net hydrogen-bond structure breaking effect. The water proton resonance, however, was found to undergo a periodic shift with respect to water concentration. The NCH3and CCH3proton resonances were not significantly affected by temperature or concentration changes.

Journal
Zeitschrift für Physikalische Chemie. Neue Folge
Volume
60
Issue
1-4
Year
1968
Start Page
159
ISBN/ISSN
2196-7156; 0044-3336
DOI
10.1524/zpch.1968.60.1-6.159