2-(Diphenylphosphino)benzonitrile is used as a bidentate P,N-ligand in catalytic processes, particularly in transition metal-catalyzed reactions such as cross-coupling (e.g., Suzuki-Miyaura, Heck) and hydrogenation. The phosphine group and nitrile functionality coordinate with metal centers, enhancing catalytic activity, selectivity, and stability of complexes. Commonly employed in organic synthesis to facilitate the formation of carbon-carbon and carbon-heteroatom bonds. Also utilized in the development of pharmaceuticals and fine chemicals due to its ability to improve reaction efficiency in Pd- and Ni-based catalysis.