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NMR of terminal oxygen. 6—17O NMR of the SO ‘double bond’: Derivatives of arylsulphinic and arylsulphonic acids

✍ Scribed by Hans Dahn; Vien Van Toan; My-Ngoc Ung-Truong

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
677 KB
Volume
29
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^17^O NMR spectra of terminal oxygen atoms in esters, anions and amides of substituted arenesulphinic acids and in esters and amides of substituted arenesulphonic acids were measured. The signals of the terminal O appear close to those of the bridge O. Compared with carbonyl O, terminal SO shows (a) a lower sensitivity to the electronic influences of geminal groups, (b) only a low sensitivity to arene ring substituents and (c) small solvent effects. The difference between C‐ and S‐bound O is discussed in terms of π‐bond character. Dy^3+^ complexation occurs with the terminal O in methyl arenesulphinates.

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