Aromatic Multicarboxylate Ligands Tuned One- and Three-dimensional Zn(II) Coordination Polymers Based on 3-(1H-pyrazol-4-yl)-5-(pyridin-3-yl)-1,2,4-triazole

Two aromatic multicarboxylate ligands tuned Zn(II) coordination polymers, namely, {[Zn-0.5(H2L)(tp)(0.5)(H2O)]H2O}(n) (1) and {[Zn-2(HL)(btc)(H2O)]H2O}(n) (2) (H2L = 3-(1H-pyrazol-4-yl)-5-(pyridin-3-yl)-1,2,4-triazole, H(2)tp = terephthalic acid; H(3)btc = 1,3,5-benzenetricarboxylic) have been synthesized. Their structures were characterized by single-crystal X-ray diffraction analysis, elemental analyses and infrared spectra. Compound 1 possesses a one-dimensional chain structure and is finally extended into a three-dimensional supramolecular architecture though hydrogen bonding interactions. Compound 2 shows a three-dimensional framework. Meanwhile, compounds 1 and 2 exhibit luminescent emission in the solid, and can be investigated as potential luminescent materials.