Additive substituent effects on the thermodynamic functions of proton ionization processes. Part III. Phenols with adjacent methyl and chloro-substituents
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 1252-1255
- https://doi.org/10.1039/j29700001252
Abstract
Thermodynamic acidity constants of 4-chloro-3-methylphenol, 4-chloro-3,5-dimethylphenol, 3,4-dichlorophenol, and 3,4,5-trichlorophenol have been measured spectrophotometrically within the temperature range 5–60 °C and the standard enthalpies and entropies of proton ionization have been calculated. The results are discussed in terms of the general additivity hypothesis previously formulated and with reference to earlier studies of additive substituent effects.Keywords
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