Polarizability constant of iodine as substituent in correlation analysis

Abstract

Correlation equations describing the influence of inductive, resonance, polarizability, and steric effects of the substituents on the parameters of IR, NQR, NMR, and Mössbauer spectra as well as ionization and activation energies have been considered for 13 reaction (indicator) series. Using the obtained equations, we have calculated the earlier unknown polarizability constant of iodine substituent (σ_α =–0.71). The relation between the σ_α constant of substituent X and polarization of atoms of X has been found for the CH₃X (H, F, Cl, Br, I) series.