2,2′:6′,2′′-三吡啶是一种三齿配体，可从 2-乙酰吡啶开始分两步制备。 光度法测量银, 铁, 和钌的试剂；同时由于存在 3 个近共面的氮供体原子，也可作为金属结合域形成金属-超分子结构。 2,2':6',2''-Terpyridine is a tridentate ligand that can be prepared in two steps starting from 2-acetylpyridine. Reagent for photometric measurement of silver, iron, and ruthenium；Due to the presence of three near-coplanar nitrogen donor atoms,it may be used as a metal-binding domain to form metallo-supramolecular structures.