A new ligand 4′-phenyl-4,2′:6′,4″-terpyridine and its 1D helical zinc(II) coordination polymer: syntheses, structures and photoluminescent properties

A new ligand 4′-phenyl-4,2′:6′,4″-terpyridine (L) and its zinc complex [Zn(L)Cl2]n (1) have been prepared and structurally characterized by single-crystal X-ray diffraction. In 1, the ligand L, with three non-planar pyridyl rings, links two zinc ions through two terminal pyridines to construct a 1D helical polymer chain, the intrachain Zn⋯Zn distance is 13.040 Å. Both L and 1 display strong photoluminescence in the solid state at room temperature.