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13C chemical shifts of phenol derivatives. A correlation with electronic structure

✍ Scribed by Marek Ilczyszyn; Zdzisław Latajka; Henryk Ratajczak

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
432 KB
Volume
13
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^13^C chemical shifts of twenty chloro‐ and nitro‐substituted phenols have been measured in d‐chloroform. The influence of substituents on the screening at C‐1, on the total charge at this position and on the dipole moments is reported and analysed. The results of this study suggest that variations of the chemical shifts at C‐1 for meta‐methyl‐, meta‐chloro‐, meta‐nitro‐, ortho‐ and para‐methyl‐, ortho‐ and para‐chlorosubstituents mainly reflect charge density changes. The influence of ortho‐nitro groups on the screening of C‐1 is more complex.

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