Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective organic transformations such as hydrogenation and C–C bond-forming reactions. Its rigid, bidentate structure enables high stereocontrol when coordinated to transition metals like rhodium or iridium, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. The compound’s fused polycyclic framework enhances steric and electronic tuning of the metal center, improving catalytic efficiency and enantioselectivity.