An inverse substituent dependence (i.e. NO, derivative to high field of NH,) has been noted for the methyl 13C chemical shifts for a series of
Measurements of actual association 13C shifts: medium effects on the TMS carbons
โ Scribed by M.C. Moreau-Descoings; G. Goethals; J.P. Seguin; J.P. Doucet
- Book ID
- 103906085
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 380 KB
- Volume
- 43
- Category
- Article
- ISSN
- 1386-1425
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๐ SIMILAR VOLUMES
It has been well established that the 13 C chemical shift of ring carbon atoms normally moves to higher field with decreasing ring size both for carbocyclic 1 and saturated heterocyclic2 compounds. Recent work3 has shown that in compounds where two of the cyclo-
## Abstract Carbonโproton and carbonโdeuteron coupling constants were measured in the isotopomers CH~2~Cl~2~, CHDCl~2~ and CD~2~Cl~2~. The primary and secondary isotope effects on the carbonโproton coupling are โ0.60 (ยฑ0.05) and โ0.25 (ยฑ0.01) Hz, respectively. The deuteriumโinduced ^13^C isotope sh