Synthesis, crystal structures and luminescent properties of two 4d-4f Ln-Ag heterometallic coordination polymers based on anion template

摘要: Abstract Two new 4d–4f Ln–Ag heterometallic coordination polymers, {[Ln3Ag5(IN)10(H2O)7]·4(ClO4)·4(H2O)}n (Ln=Eu (1) and Sm (2), HIN=isonicotinic acid), have been synthesized under hydrothermal conditions by reactions of Ln2O3, AgNO3, HIN HClO4, characterized elemental analysis, IR, thermal analysis single-crystal X-ray diffraction. It is proved that HClO4 not only adjusts the pH value reaction mixture, but also acts as anion template. The structure determination reveals 1 2 are isostructural feature a novel two-dimensional (2D) layered hetrometallic constructed from one-dimensional Ln–carboxylate chains pillared Ag(IN)2 units. 2D layers further interlinked through Ag⋯Ag Ag⋯O(ClO4−) multiple weak interactions, which form rare Ag–ClO4 ribbon in lanthanide–transition metal to give rise three-dimensional supramolecular architecture. Moreover, luminescent properties these two compounds investigated at room temperature.