Used as a chelating ligand in coordination chemistry, particularly in the formation of stable complexes with transition metals such as copper, nickel, and zinc. Its structure allows for strong binding through multiple nitrogen donor sites, making it effective in catalytic applications, especially in oxidation and C–C bond formation reactions. Also employed in the development of metal-based sensors due to its ability to enhance metal ion selectivity and stability. Additionally, it serves as a building block in designing biomimetic complexes that model metalloenzyme active sites.