Figure 4. Absorption spectra of (1) 7.45•10^–6 M Cocr₈Pc and (2) 6.9•10^–6 M H₂cr₈Pc in aqueous 5.5•10^–2 M KCl solutions. Concentrations are given for the dimeric Pc forms. Insert shows the model of (Mcr₈Pc)₂K⁺₈ cofacial dimer.