摘要:
Two new zinc(II)-triazole-aliphatic dicarboxylate coordination polymers, [Zn(trz)(Hsuc)](n) (1), [Zn-2(trz)(2)(tar)](n) (2), have been hydrothermally synthesized by reaction of Zn salt, Htrz with H(2)suc and H(2)tar, respectively (Htrz = 1,2,4-triazole, H(2)suc = succinic acid, H(2)tar = tartaric acid).Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by X-ray powder diffraction, elemental analyses, IR spectra and TG analyses. Compound 1 displays a 2D layer structure containing {[Zn-4(trz)(4)](4+)}(n) layers decorated by the suc ligand. Compound 2 is in a 3D structure formed by the interconnection of 2D {[Zn-4(trz)(4)](4+)}(n) layers with tar ligand, resulting a 3,4-connected topological network. Due to the different coordination mode and conformation of aliphatic carboxylate ligand, the similar 2D {[Zn-4(trz)(4)](4+)}(n) layers stack in the -AAA- fashion in 1, while the {[Zn-4(trz)(4)](4+)}(n) layers hold together in the -ABAB- stacking sequence in 2. Additionally, the two compounds show strong fluorescence in the solid state at room temperature. (C) 2011 Elsevier B. V. All rights reserved.