Auxiliary Ligands Mediated One-and Two-dimensional Cd(Ⅱ) Coordination Polymers Incorporating Methyl-3-hydroxy-5-carboxy-2-Thiophenecarboxylate Ligand

摘要

Two N-donor ligands mediated Cd(Ⅱ) coordination polymers,namely,[Cd(L)(dmpz)2]n (1) and {[Cd(L)(atr)0.5(H2O)](H2O)}n (2) (H2L =methyl-3-hydroxy-5-carboxy-2-thiophenecarboxylate,dmpz =3,5-dimethylpyrazole,and atr =4-amino-1,2,4-triazole),have been produced.Their structures were characterized by single-crystal X-ray diffraction analysis,elemental analyses and infrared spectra.Compound 1 possesses a one-dimensional (1D) chain structure and is finally extended into a three-dimensional (3D) supramolecular architecture though hydrogen bonding interactions.Compound 2 features a two-dimensional (2D) network with 4-connected sql topology based on dinuclear Cd(Ⅱ) clusters as nodes,which is also assembled into a 3D supramolecular architecture through hydrogen bonding interactions.Furthermore,compounds 1 and 2 exhibit high thermal stabilities and intense fluorescent emission in the solid,and can be explored as potential luminescent materials.