1,2-Bis(diphenylphosphino)ethyne is widely used as a ligand in coordination chemistry, particularly in the synthesis of transition metal complexes. Its ability to form stable complexes with metals makes it valuable in catalytic processes, such as hydrogenation, hydroformylation, and cross-coupling reactions. It is also employed in the development of organometallic compounds for use in organic synthesis and material science. Additionally, its phosphine groups contribute to stabilizing metal centers in various catalytic systems, enhancing their efficiency and selectivity. This compound is also explored in the design of luminescent materials and sensors due to its unique electronic properties.