Structures, luminescence and magnetic properties of three 3D lanthanide-zinc heterometallic coordination polymers based on 3-amino-1,2,4-triazole and Oxalate

Three 3D Ln(III)-Zn(II) 3d-4f heterometallic coordination polymers (HCPs) constructed from the coligands 3-amino-1H-1,2,4-triazole and oxalate, {[Ln(2)Zn(19)(atz)(18)(ox)(9)(Cl)(8)]center dot 17H(2)O}(n)(Ln = Eu 1, Gd 2, Tb 3, Hatz = 3-amino-1H-1,2,4-triazole, ox = oxalic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, FT-IR. TG analysis and X-ray diffraction. X-ray diffraction analysis reveals that these complexes are isostructural and feature 3D pillar-layered coordination frameworks constructed by the linkages of 2D layers and 1D zigzag chains, possessing a 5-nodal net topology with Schlafli symbol of {3(2);5(2);6(2)}(3){3(3);4(4);5(7);6(5);7(2)}(6){3(3);4(5);5(5):6;7}(6){3(6);4(15):5(6);6}(2){5(3)}(4). In addition, the magnetic property of 2 and the luminescence properties of 1 and 3 were also investigated. Published by Elsevier B.V.