Association of Aromatic Hydrocarbon Negative Ions with Alkali Ions. A Spectroscopic Investigation

Abstract
From measurements of the electrical conductances of solutions of alkali—aromatic hydrocarbon salts in 2‐methyltetrahydrofuran, tetrahydrofuran, and 1,2‐dimethoxyethane, information has been gathered about the conditions under which the hydrocarbon negative ions are ``free'' or associated with the alkali counter ion. Guided by this knowledge, a study has been made of the influence of association on the electronic spectra of some negative ions in the polyacene and polyphenyl series.