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17O NMR spectroscopy in the study of group 14 organometallic compounds
β Scribed by I. Zicmane; E. Lukevics
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 402 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0268-2605
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π SIMILAR VOLUMES
The 17O shift values of para-substituted benzoyl compounds (X = H, COOEt, Br, Cl, F, p-YC 6 H 4 COX CF 3 , SEt, OCOAr, OH, O-Na', were measured. The 17O shielding values d(17O) of these and other aryl-NH 2 ) unsubstituted benzoyl compounds (Y = H) follow the electron-donating power of X (resonance),
Pyridofuroxan ([1,2,5]oxodiazolo [3,4-b]pyridine 1-oxide) undergoes isomerization between the N1oxide and N3-oxide forms which can be observed by the 1 H, 13 C and 15 N NMR spectroscopy but not by 14 N and 17 O NMR at ambient and low temperatures. The rearrangement becomes slower at low temperatures