ISSN:
0749-1581
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 17O, 15N and 13C NMR chemical shifts have been determined for N,N-dimethylmethanesulphinamide (1), both as the neat liquid and in dimethyl sulphoxide, acetone, chloroform and various alcohols. The 17O and 15N nuclei of 1 resonate at a lower frequency than those of the corresponding sulphonamide, and depend on the solvent and concentration of the components in binary solution mixtures. Hydrogen bond-forming solvents shift the signals to lower frequency than those of the neat amide. On changing the solvent, the change in the 17O NMR chemical shift of the sulphinamide is smaller than that of carboxamides, but the difference in the 15N NMR chemical shifts between these two systems with a solvent change is much lower and opposite in direction, reflecting the differences in the resonance structures of carboxamides and sulphinamides.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260230507
