Electronic transmission of substituent effects through the tellurophen ring
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 12,p. 1738-1740
- https://doi.org/10.1039/p29720001738
Abstract
The ionization constants of some 5-substituted tellurophen-2-carboxylic acids in water at 25 °C have been determined potentiometrically. An excellent linear correlation is obtained when the pKa values are plotted against the σp constants. The ρ value (+1·20) is equal, within experimental error, to those for the thiophen and selenophen series, showing that the intensity of transmission of the electronic effects of substituents is substantially the same in the three heteroaromatic systems.Keywords
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