Substituent Effects. II. C 13 -Proton Couplings in Carbon sp 2 Systems
✍ Scribed by Malinowski, E. R.; Pollara, L. Z.; Larmann, J. P.
- Book ID
- 126954747
- Publisher
- American Chemical Society
- Year
- 1962
- Tongue
- English
- Weight
- 263 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0002-7863
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## Abstract Carbon–proton and carbon–deuteron 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 carbon–proton coupling are −0.60 (±0.05) and −0.25 (±0.01) Hz, respectively. The deuterium‐induced ^13^C isotope sh
## Abstract Orientation effects of electronegative substituents on vicinal carbon‐proton coupling constants are studied in 1,2‐disubstituted propanes and are found to resemble those on vicinal proton‐proton coupling constants. Known relations for the orientation effect of substituents on synclinal