## Abstract The ^13^C chemical shifts of 11 substituted triphenylamines have been determined and the assignment of these resonances made using intensities, ^1^H and ^19^F couplings and predictions from bond additivity relationships. ^13^C chemical shifts at carbons bearing the substituent and at ca
13C NMR spectra and substituent effects of meta and para substituted benzoyl isothiocyanates
✍ Scribed by Danihel, Ivan; Imrich, Ján; Košťík, Dušan; Kristian, Pavol; Barančíková, Gabriela
- Book ID
- 121257208
- Publisher
- UOCHB
- Year
- 1985
- Tongue
- English
- Weight
- 679 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0010-0765
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Aromatic I3C chemical shifts of 4-and hubstituted pyridine N-oxides in aprotic and protic solvents are reported and discussed. Changes in chemical shifts caused by hydrogen bonding and protonation are much smaller than those induced by a substituent, and are not related to the pK, values of N-oxides
## Abstract ^15^N NMR spectra of phenylhydrazine and of 14 __para__‐ and __meta__‐substituted phenylhydrazines were measured at natural isotope abundance in DMSO‐__d__~6~ solution. The substituent present exerts a larger influence on the chemical shift of the nitrogen atom directly bound to the aro
Carbon-13 chemical shifts are reported for 16 para-substituted phenyl isothiocyanates measured at 1 and 1Omol 9'0 in chloroform-d solution. Data for the -N=C==S group were not obtained at lmol 9'0, but concentration effects for the other resonances were negligible. Hammett, dual substituent paramete