Key points are not available for this paper at this time.
The steric bulk of the phosphane ligand determines the mechanism of the ArX addition to zero-valent PdL2 complexes. This effect has been studied by variation of ligands (catalyst: Pd(PCxntBu3−n)2; n=0–3, Cx=cyclohexyl) in Pd couplings of unsaturated electrophiles, and different reaction pathways (A=associative, B=dissociative) identified, depending on the size of the ligand.
Galardon et al. (Fri,) studied this question.