nJ(13C,O1H) carbonÈhydrogen couplings were measured for a broad series of intramolecularly hydrogen-bonded compounds, some of which display tautomerism. A plot of Jobs(C-3,OH) ] Jobs(C-1,OH) vs. dOH showed reasonable correlation both for compounds displaying tautomerism and for those with localized
17O, 1H coupling constants in intramolecular hydrogen bonds
✍ Scribed by I.A. Bolkunov; N.M. Sergeyev; N.N. Shapet'ko
- Book ID
- 107734824
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 273 KB
- Volume
- 174
- Category
- Article
- ISSN
- 0009-2614
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📜 SIMILAR VOLUMES
Two bond spin-spin coupling constants 2J(170iH) are determined for the oxygen in ether, aldehyde, acid, ester and amide groups by line shape analysis of the corresponding I7O NMR spectra.
The NMR spectra of solutions of 30% 17 O-enriched H 2 O and D 2 O in nitromethane display the resonances of the three isotopomers H 2 O, HDO, and D 2 O. All 17 O, 1 H and 17 O, 2 H coupling constants and the primary and secondary isotope effects on J( 17 O, 1 H) have been determined. The primary eff
## Abstract Natural abundance ^17^O NMR data for fifteen 2‐ and 4‐substituted phenols, ten 3‐and 5‐substituted 2‐hydroxybenzaldehydes and eight 3‐substituted benzaldehydes, recorded at 75°C in acetonitrile are reported. The chemical shift change due to intramolecular hydrogen bonding for the phenol