The intramolecular H-bond strength in cis-enolic forms of b-diketones was investigated. The correlations between the 'H hydroxyl proton shieldings and the chemical shifts of the "C and "0 nuclei involved in the chelate ring, and the H/D isotope shifts on the latter resonances, were determined. An in
β¦ LIBER β¦
Intramolecular van der Waals interactions and 13C chemical shifts: Substituent effects in some cyclic and bicyclic systems
β Scribed by S. Li; D. B. Chesnut
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 943 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0749-1581
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A series of 3-substituted(X)bicyclo [ 1.1.1 ] pent-1-yltrimethylstannanes (3) were synthesized and their 119Sn and 13C NMR spectra were recorded. The 119Sn substituent chemical shifts (SCS) and the one-bond carbon-tin coupling constants [ 1J(13C,119Sn) ] were analyzed in terms of possible substituen