Correlations between the Ligand Electrochemical Parameter, EL(L) and the Hammett Substituent Parameter Sigma.

摘要

Correlations of the electrochemical parameter, E sub L (L) with Hammett and Taft parameters, sigma sub p, sigma sub m, sigma+, and sigma* are presented and discussed. The correlations provide a means to extend the electrochemical parameter and the Hammett and Taft databases. Recently, a ligand electrochemical parameter, E sub L (L), based upon the Ruthenium(III)/II reduction potential as an electrochemical standard, was introduced and developed. This parameter allows one to predict the metal-centred redox potential of a variety of complexes based on the additivity of the E sub L (L) parameters.