Hydrothermal Synthesis, Crystal Structures and Properties of Zinc Coordination Polymers by Mixed Ligand
| Autor: | Ju-Lin Hsu, 許玉林 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 In this dissertation, we present four new coordination polymers, namely [Zn(BDC)(bpp)] (1), [Zn3(BDC)3(mIM)2]•1.5H2O (2), [Zn(BDC)(H2O)2] (3), and [Zn(H2DOBDC)(bpp)] (4) based on isomerous 4,4’-trimethylene dipyridine (bpp), 1,4-benzenedicarboxylate anion (BDC), 2-Methylimidazole (mIM), and 2,5-dihydroxyterephthalate anion (H2DOBDC). All compounds have been synthesized by middle temperature hydrothermal reactions and characterized by single crystal X-ray diffraction. Compounds 1 is 2D layers with rectangular grids and interpenetrated to each other to form three-dimensional structure. Compound 2 is a 3D structure which was combined with Zn and BDC. Compound 3 is 1D infinite zigzag chain linked by H2DOBDC anions and Zn centers. The H2DOBDC ligand has intra-and inter- layer H-bond to from stable architecture. The compound 4 is two-fold 2D sheets. The adjacent rectangular grids are interpenetrated and together as thickness layers. The expanded direction along the layers has the - stacking by aromatic rings. All the four compounds have been further characterized by powder X-ray diffraction, thermogravimetric analysis, photoluminescence, elemental analysis, IR and UV-Visible spectra. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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