Pyridine ligands play an important role in organometallic chemistry, especially in catalytic reactions. Pyridine (C₅H₅N) is a nitrogen-containing aromatic compound that usually acts as a ligand to form complexes with transition metal centers. Pyridine ligands play an important role in metal-catalyzed reactions through their unique electronic and steric effects. They can enhance the activity and selectivity of catalytic reactions, improve the stability of catalysts, and improve the controllability of reactions. Pyridine ligands are widely used in a variety of organic synthesis reactions and are an important tool in modern organometallic catalysis research.