Free-energy relationship

Steric Taft Parameters

Published in Mihai V. Putz, New Frontiers in Nanochemistry, 2020

The initial Hammett equation in organic chemistry describes a linear free-energy relationship (that relates the logarithm of a reaction rate constant or equilibrium constant for one series of reactions with the logarithm of the rate or equilibrium constant for a relates series of reactions) between the reaction rates and equilibrium constants for many reactions that are involving benzoic acid analogs, with meta- and para-substituents to each other, with just two parameters: a substituent constant and a reaction constant (Abraham et al., 2002; Hammett, 1937).

Effect of substituents in 5-R-3-amino-1,2,4-triazoles on the chemisorption on copper surface in neutral media

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Journal Information

Published in Corrosion Engineering, Science and Technology, 2021

Yuri I. Kuznetsov, Khidmet S. Shikhaliev, Marina O. Agafonkina, Nina P. Andreeva, Ivan A. Arkhipushkin, Andrei Yu. Potapov, Leonid P. Kazansky

To establish a relation between corrosion inhibitor effectiveness and its structure, a widely known inorganic and physical chemistry Hammett equation describes a linear free-energy relationship relating reaction rates and equilibrium constants for many reactions. It was published in early 1937 [32] regarding benzene derivatives and then applied by many physico-chemists for quantitative description and prediction of chemical reaction rates (electrochemical reactions [33] and in corrosion inhibition [34]).

Free-energy relationship

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Steric Taft Parameters

Effect of substituents in 5-R-3-amino-1,2,4-triazoles on the chemisorption on copper surface in neutral media