Substituent effects on 13C-SCS of substituted ethenes and propenes
โ Scribed by Naoki Inamoto; Shozo Masuda; Kazuo Tori; Junko Nishikawa
- Book ID
- 104221731
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 229 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Ce-SCS in XCH=CH, exhibited three linear relationships with the ~(iota) value depending upon the hybridization due to the substituent, and C 8 -SCS showed an approximate correlation with ai. Other 13C-SCS in alkanes could be expressed by the 1-o; DSP equation.
๐ SIMILAR VOLUMES
## Abstract ^13^C NMR chemical shifts of 22 __ortho__โsubstituted nitrobenzenes are reported. Except for those on Cโ3 and Cโ5, the effects of the interacting nitro group and the substituent are nonโadditive. The chemical shifts of the __ipso__, __ortho__ and __para__ carbons in the spectra and thos
## Abstract Carbonโ13 chemical shifts of fourteen __para__โsubstituted benzylbenzenes have been determined. The relative substituent chemical shifts (SCS) of the methylene carbons and the aromatic ring carbons (Cโ4, Cโ1โฒ and Cโ4โฒ) correlated well with the Hammett substituent effects using the dual
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