trapped in situ by protonation to the corresponding phosphine–benzimidazolium cation. When the chloride anion reacts with the cationic [Pd(η2‐BIMIONAP)Cl2] complex, the same cleavage occurs and the phosphine–NHC moiety is trapped in the corresponding [PdCl2(η2‐phosphine–NHC)] complex. When the chloride anion reacts with the dicationic [Pd(π‐allyl)(η2‐BIMIONAP)]+ complex, allyldiphenylphosphine is produced