Data related to the figures, diagrams and tables of the published article in iScience, 2020, 23 (8), p.101377. The archives correspond on the one hand, to a document with the complementary information of the transparent methods of figures S1-S113, schemes S1-S8 and tables S1 and S2 of the article published in iScience, 2020, 23 (8), p.101377 and on the other hand, a file with cartesian coordinate data and energies related to Figure 4. DFT-Optimized Pathway (Relative Energies to Pd (0) in kcal / mol) for the Activation of Catalysts 6, 11), and 12 6 = IPr, 11 = SIPr, 12 = IPr *, [Pd (NHC) (m-Cl) Cl] 2 from the same published article mentioned above