First successful correlation of the UV spectra of three kinds of styrenes with spin‐delocalization substituent constants σ^.

Abstract

Abstract UV spectra of 17 para ‐Y‐substituted styrenes, 8 para ‐Y‐substituted α‐methylstyrenes and 20 para ‐Y‐substituted α,β,β‐trifluorostyrenes were measured and correlated against spin‐delocalization substituent constants (σ . ) with confidence levels above 99·9%.