Fig. 9: Energy profiles and geometries of key species for the tentative reaction pathways.
From: Palladium-catalyzed allene synthesis enabled by β-hydrogen elimination from sp2-carbon

a Energy profiles and geometries of key species for the formation of allylpalladium species. b Energy profiles and geometries of key species for β-hydrogen elimination mechanism. All results are calculated at the SMD (tetrahydrofuran) M06/def2-TZVP//B3LYP/6-31G(d)(LANL2DZ) level of theory. Relative free energies are in kcal/mol and bond lengths are in Å.