## 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
β¦ LIBER β¦
The carboxyl proton chemical shift of trimethylacetic acid monomers in carbon tetrachloride
β Scribed by T.C. Chiang; R.M. Hammaker
- Book ID
- 107801143
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- English
- Weight
- 571 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-2852
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## Abstract The carboxyl substituent effects for branched carboxylic acids have been determined by carbonβ13 Fourier ransform nuclear magnetic resonance of eighteen measured and reported branched acids. For Ξ±βbranched systems the substituent effects are Ξ± = 15.3 ppm, Ξ² = 2.6 ppm, Ξ³ = β1.9 ppm, Ξ΄ =