## Abstract The additivity of chloro and hydroxy substituent effects on the formyl proton spinβspin coupling constants with the __meta__ ring proton, ^5^__J__(HH), has been tested with 15 chlorinated benzaldehydes and hydroxybenzaldehydes by multiple linear regression analysis. No general additivit
On the magnitude and sign of the 5j methoxy-proton coupling in 2, 4-dibromo-anisol
β Scribed by H.Angad Gaur; J. Vriend; W.G.B. Huysmans
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 196 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
Current literature (l-11) devotes much attention to long range coupling constants. Generally, the magnitude of the long range coupling can be easily determined by assuming first order splitting. However, access to the relative sign is more difficult and possible only in some cases (1,3,
π SIMILAR VOLUMES
## Abstract The ^13^C NMR methyl group multiplet of the [cyclopentadienyltris(trimethylphosphine)iron]^+^ cation was simulated to obtain the sign and magnitude of the phosphorusβphosphorus coupling constant and the ^13^C/^12^C isotope effect on the ^31^P chemical shift.