1-D Ln-Ag (Ln = Eu; Tb) heterometallic coordination polymers with pyridine-2,6-dicarboxylate as the single ligand: Synthesis, crystal structures, and luminescence

摘要

Two new 4d-4f heterometallic coordination polymers [AgLn(pydc)_2(H_2O)_3] · x(H_2O) [Ln = Eu, x = 1.25 (1); Ln = Tb, x = 1.25 (2); pydc = 2,6-pyridinedicarboxylate] have been synthesized and characterized by elemental analysis, IR spectroscopy, and single crystal X-ray diffraction. Both structures display the same unusual 1-D heterometallic coordination polymer based on Ln building blocks and Ag ions. Thermal stabilities and luminescent properties of 1 and 2 are presented.