## Abstract The π‐electronic structure and spectra of the protonated aromatic carboxylic acids, aldehydes and ketones have been calculated by the Pariser–Parr–Pople method. An essential modification was that the positive charge has been considered as delocalized within the substituent group. The be
The protonation of aromatic carbonyl compounds
✍ Scribed by Greig, C. C.; Johnson, Colin D.
- Book ID
- 126290125
- Publisher
- American Chemical Society
- Year
- 1968
- Tongue
- English
- Weight
- 615 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0002-7863
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📜 SIMILAR VOLUMES
## Abstract The barrier to internal rotation around the phenyl–carbonyl bond in a series of stable protonated __p__‐substituted acetophenones has been determined by means of low temperature ^13^C NMR and total bandshape analysis resulting in a value of Δ__G__ = 48.1 kJ mol^−1^ for the unsubstituted
The free energy of activation of the torsional barrier around the phenyl-carbonyl bond in a series of stable protonated a-substituted pmethylacetophenones (ptolyl-COHLR where R = CH,, C,H,, GCJ-I,, t -C4€&, , CHJX, CHCl,, CCl,, CHzF, CHF,, CF3 and CH,Br) has been evaluated by complete lineshape anal