The complex [Tb
0.1Gd
0.9(TPTZ)(H
2O)
6]Cl
3·3H
2O was prepared through the reaction of 2,4,6-tris-(2-pyridyl)-1,3,5-triazine (TPTZ) with TbCl
3:GdCl
3 (0.1:0.9) in absolute ethanol at room temperature. Single crystal X-ray diffraction revealed that the metal atom is nine-coordinated
with three nitrogen atoms from one TPTZ ligand and six oxygen atoms from six water molecules. The complex emits intense green
fluorescence under ultraviolet light. The luminescence peaks correspond to the characteristic emission
5D
4→
7F
J (J = 3–6) transitions of the Tb
3+ ion.
Keywords 2,4,6-tris-(2-pyridyl)-1,3,5-triazine - Terbium complex - Luminescent property - Crystal structure