| Summary: | 碩士 === 國立中正大學 === 化學暨生物化學研究所 === 105 === To take advantage of self-assembly to construct a variety of supramolecular architectures and polymeric networks with potential applications is a challenging in crystal engineering. In this thesis, we designed and synthesized an unsymmetrical pyridyl-amine ligand, N-(4-(4-aminophenoxy)phenyl)isonicotinamide (papoa), to react with CdX2 (X=Br, I)、HgX2 (X=Cl, Br) to investigate the anion and solvent effects in the reaction process.
The complexes studied in this thesis contain [CdBr2(papoa)]n (1), [CdI2(papoa)]n (2a), [CdI2(papoa)]2•3(C2H5)2O2 (2b), [HgCl2(papoa)]2 (3), and [HgBr2(papoa)]2 (4), which are isolated and structurally characterized by X-ray diffraction studies. X-ray analysis reveals the formation of 0-D macrocyclic structures for 2b, 3, and 4, and 1-D double zigzag chains for 1 and 2a. The 0-D and 1-D frameworks can be extended into multidimensional structures by hydrogen bonds. In the structural frameworks each macrocycle includes CdX2 and HgX2 units, with roughly tetrahedral coordination geometries for Cd(II) and Hg(II) centers, and two papoa ligands. When CdI2 is reacted with papoa in the presence of different solvents, two different coordinated patterns for 2a and 2b can be obtained. 2a involves two papoa and three iodide anions, whereas 2b is composed of two papoa and two iodides. These Cd(II) and Hg(II) complexes display blue emission in the solid state, and can be probably assigned to an intraligand transition (IL).
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