The positions of the chemical shifts in the table match those of the carbon atoms at the head of a column. Assignments with similar chemical shifts may be interchanged. Fourth signal not resolved. Signals superimposed.
13C NMR spectra of substituted carbazoles and azacarbazoles (β-carbolines)
✍ Scribed by Rosa Erra-Balsells
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 315 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The 13C NMR spectra of a series of derivatives of carbazole and azacarbazole (norharmane or 9H-pyrido[3,4-b]indole) are reported. The dependence of 'H and 'T shieldings on molecular geometry is discussed briefly. KEY WORDS'~C NMR Dimeric 8-carbolines Azacarbazoles 9H-Pyrido[3,4-b]indoles Carbazole derivatives Stereochemical effects Table 2. 13C chemical shifts of the carbazoles studied (ppm relative to internal TMS in DMSO-d, solutions) c-1 c-2 c-3 c-4 C-4a C-9a Compound C-8
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