Sulfur-33 and oxygen-17 nuclear magnetic resonance spectroscopy of compounds containing -SO- and -SO2- moieties
β Scribed by Giovanna Barbarella
- Book ID
- 113256894
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 977 KB
- Volume
- 186
- Category
- Article
- ISSN
- 0166-1280
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π SIMILAR VOLUMES
Precise frequencies for the 1 11 -2 02 transition of 33 SO 2 and SO 17 O in natural isotopic abundance have been obtained near 12 GHz by microwave Fourier transform spectroscopy in order to yield improved hyperfine constants. Nuclear spin-rotation coupling constants have been determined experimental
The stereoisomerism of some methyl-substituted 1,3,2-dioxathiepanes has been investigated by I3C and \* '0 NMR spectroscopy. The effects of substituents on the conformational equilibria of the seven-membered rings are discussed and compared with those for six-membered ring sulphites.
## Abstract The ^17^O and ^13^C chemical shifts (Ξ΄) of 14 Ξ±,Ξ²βunsaturated aldehydes and ketones and 33 acyl derivatives RXC = O (X = Cl, OH, OMe, OEt, NH~2~ and R = H or alkyl) have been measured. In the unsaturated carbonyl series, a correlation exists between Ξ΄ ^17^O and the Ο electron density at