"Molecular Hysteresis" in an Electrochemical System Revisited

Earlier work on the electrochemical behavior of (1,5-dithiacyclooctane I-oxide)bis(pentaammineruthenium) has been repeated and extended so that the kinetic and equilibrium parameters which define the «double-block» diagram are now determined (acetone as solvent, 20 o C). The metastable fully oxidized form (Ru 3+ -SO/Ru 3+ -S) decays to the stable isomer (Ru 3+ -OS/Ru 3+ -S) at a specific rate of 13 s -1 ; ΔG o for the reaction is -36 kJ mol -1 . The metastable fully reduced form (Ru 3+ -OS/Ru 3+ -S) decays to the stable form (Ru 3+ -SO/Ru 3+ -S) at a specific rate of 1.8 s -1 ; ΔG o =-55 kJ mol -1