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Four pillar-layer 3d-4f heterometallic coordination polymers based on isonicotinate acid and 1,4-naphthalic acid mixed-ligand:synthesis,structures and magnetic properties

Chao Wu  Junling Song  Jinfang Zhang  Chi Zhang  
【摘要】:Four novel three dimensional(3D)3d-4f heterometallic coordination polymers,namely,[Ln12Cu31I27(ina)34(NDC)3(H2O)12]n.2n H2O[Ln=Sm(1),Eu(2),Gd(3),Tb(4);NDC=1,4-naphthalenedicarboxylate,Hina=isonicotinic acid],have been hydrothermally synthesized and characterized by elemental analysis,FT-IR spectra,thermogravimetric analysis(TGA)and X-ray single-crystal diffraction.Compounds 1-4 are isostructural and feature 3D pillar-layer coordination frameworks built from 2D[Eu12(ina)12(NDC)3]∞wave-like layer and 1D[Cu6I6]@[Cu17I16]∞ladder-like copper(I)halide chain.Furthermore,the magnetic properties of compounds 2 and 4 were investigated.The successful preparation of four novel HCPs not only enriches the catalogue of 3d-4f heterometallic coordination polymers but also provides a valuable approach for the construction of other heterometallic coordination polymers.

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