Effect of Pressure on Some Charge Transfer Spectra

Abstract

The charge transfer spectra of $[\mathrm{Co}({\mathrm{NH}}_3{)}_5\mathrm{I}]{\mathrm{I}}_2,{\mathrm{K}}_2{\mathrm{ReCl}}_6,{\mathrm{K}}_2{\mathrm{ReBr}}_6$ , quinhydrone, and chloranil‐hexamethyl‐benzene have been measured as a function of pressure. The shifts of the peaks for the inorganic complexes can be explained in terms of the effect of pressure on the acceptor levels of the metal relative to the ligand levels. The large red shifts observed in the peaks for the organic complexes can be explained in terms of solid‐state band theory.