Fig. 5: Ligand steric effects on divergent cycloaddition.
From: Nickel(0)-catalyzed divergent reactions of silacyclobutanes with internal alkynes

a Visual analysis of non-covalent interactions47. b Ligand distortion energies. c The reaction of SCB 1a with 2a by use of a much less sterically hindered NHC ligand. Free energies are shown in kcal/mol, distances in Å.