Figure 9: Dependences of l o g 𝑘 Q (top) and log ( 1 / 𝑘 Q 1 / 𝑘 D i ) (bottom) on Δ 𝐺 E T for quenching of excited singlet state of oxonine cation by various aromatic compounds in MeOH (according to the experimental data of [43]). Best plots are shown for simulation of the experimental dependence by (3) ( 𝜆 = 0 . 3  eV) (dash line) and by concatenated mechanism (16) (solid line). Dotted line shows thermodynamic limit for ET.