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Additivity of proton and carbon nmr chemical shifts in protonated benzene carboxylic acids

✍ Scribed by Daniel Bruck; Mordecai Rabinovitz

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
247 KB
Volume
11
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The additivity of the proton and carbon chemical shift increments due to structural changes in a series of conjugate acids derived from benzene polycarboxylic acids is reported. In the acids, two sets of increments had been applied, one to the ortho diacids and one to acids which do not bear ortho substituents. In the conjugate acids only one set of increments is required. The disappearance of the ‘ortho’ effect may be the outcome of properties inherent to these conjugate acids.

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