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17O, 15N and 13C NMR chemical shifts of N,N-dimethylmethanesulphinamide in various solvents

✍ Scribed by A.-M. Häkkinen; P. Ruostesuo; S. Kurkisuo

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
330 KB
Volume
23
Category
Article
ISSN
0749-1581

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✦ Synopsis

The 170, 15N and =C NMR chemical shifts have been determined for N,N-dimethylmethanesulphinamide (l), both as the neat liquid and in dimethyl sulphoxide, acetone, chloroform and various alcohols. The 0 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 mixtoreS. Hydrogen bond-forming solvents shift the signals to lower frequency than those of the neat amide. On changing the solvent, the change in the "0 NMR chemical shift of the sulphinamide is smaller than that of carboxamides, but the diiference in the 15N NMR chemical shifts between these two systems with a solvent change is much lower and opposite in direction, retlecting the Werences in the resonance structures of carboxamides and sulphinamides. 17

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