From a kinetic point of view, the rate constant for the first dissociation is calculated to be kfwd= 8.76 x10 -27 s -1 , a negligible value that should hinder the partial dissociation at an extended timeframe. Unsurprisingly, Fig. in the Supporting Information displays the time-dependent evolution of this reaction mechanism to confirm that, after 12 days, there is no product formed under irreversible conditions. This outcome is in agreement with the experimental report, albeit the pre-exponential term A = 2.66 x10 +18 s -1 is slightly overestimated in the present work.