How Do Phosphine Ligands Influence Catalytic Activity?
Phosphine ligands influence catalytic activity through several mechanisms: - Ligand Substitution: They can facilitate the substitution of other ligands around the metal center, thereby activating the catalyst. - Electron Donation: By donating electron density, phosphine ligands can stabilize catalytic intermediates and transition states, lowering activation barriers. - Steric Effects: The bulkiness of the ligand can block certain reactive sites, enhancing the selectivity of the catalyst towards specific products.
