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Metal-organic open frameworks with one-dimension channels assembled with pyridine 2,6-dicarboxylic acid and N-containing auxiliary ligands: Syntheses, crystal structures, and physical characterization |
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| Authors: | Dongsheng Deng Weijun Fu Fengxia Yang |
| Institution: | a College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, PR China b School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, PR China c Northwest Agriculture and Forest University, Yangling 712100, PR China |
| Abstract: | Four new complexes, {Mn(imH)2(pdc)]·H2O}n (1), Zn2(pdc)2(H2O)5]·2H2O (2), Zn(imH)2(pdc)]·H2O (3), {Zn2(pdc)2(bpy)(H2O)2]·5H2O}n (4) imH = imidazole pdc = pyridine 2,6-dicarboxylate, bpy = 4,4′-bipyridine] have been synthesized under hydrothermal conditions and structurally characterized by elemental analysis, IR, PXRD, single-crystal X-ray diffraction and thermogravimetric analyses. All the four complexes display a three-dimensional (3D) open framework with one-dimensional (1D) channels that are filled with lattice water molecules. Particularly, in 4, the lattice water molecules form an infinite water chain. Both 1 and 4 consist of 1D polymeric chains. While 2 contains a dinuclear Zn(II) unit, and 3 is a mononuclear complex. Further, the result of thermal analysis of 1 and 2 shows the robustness of the overall supramolecular three-dimensional architecture. Complexes 1, 3, and 4 exhibit strong fluorescent emissions in the solid state at room temperature and could be significant in the field of photoactive materials. |
| Keywords: | Pyridine-2 6-dicarboxylic acid Crystal structure N-containing auxiliary ligand Metallosupramolecular architecture |
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