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A study of substituent effect on 1H and 13C NMR spectra of mono, di and poly substituted carbazoles

✍ Scribed by Sergio M. Bonesi; Maria A. Ponce; Rosa Erra-Balsells

Publisher: Journal of Heterocyclic Chemistry
Year: 2005
Tongue: English
Weight: 122 KB
Volume: 42
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570420519

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✦ Synopsis

Abstract

^1^H and ^13^C NMR spectra of several substituted carbazoles (Series 1, 2, 3, 4 and 5) were measured. Substituent chemical shifts (SCS's) and Lynch correlations of ^1^H and ^13^C nuclei were calculated and the substituent effect on the NMR phenomena was determined. Atomic charge densities for carbazoles of Series 1, 2, 3, 4 and 5 were calculated by using the semi empirical PM3 method. These values also show a linear correlation with the ^13^C chemical shifts.

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