## Abstract ^1^H and ^13^C nmr spectra of several __N__β and Cβsubstituted carbazoles (Series 1, 2, 3 and 4) were measured. Correlations between chemical shifts and substituent constants show that these parameters describe properly the substituent effect on the nmr phenomena. Atomic charge densitie
Substituent effects on ionisation and 13C NMR properties of some monosubstituted phenols: A potentiometric, spectrophotometric and 13C NMR study
β Scribed by Guido Crisponi; Mariano Casu; Valeria Marina Nurchi; Flaminia Cesare-Marincola; Tiziana Pivetta; Roberta Silvagni
- Book ID
- 117222813
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 293 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0039-9140
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π SIMILAR VOLUMES
## 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
## Abstract Carbonβ13 NMR chemical shifts in various amides and imides are examined. The compounds include monoβ and diamides, acyclic imides and cyclic 5β and 6βmembered ring imides. The observed shifts can be satisfactorily rationalized on the basis of various electronic and steric factors which
## Abstract The synthesis and assignment of ^15^N and ^13^C NMR signals of the isoxazole ring in a series of __para__βsubstituted 3βphenyl derivatives are reported. DFT calculations of ^15^N and ^13^C chemical shifts are presented and compared to observed values. Substituent effects are interpreted