| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 91 ===
Abstract
In the thesis, we report five novel metal phosphates have been syn- thesized under hydrothermal conditions and structurally characterized by single X-ray diffaction.
Type Ⅰ:The first mixed-metal phosphate and metal phosphate incorporate isonicotinate ligand, CuVO2(HINT)(PO4), 1; Zn2(HINT)2(HPO4)2, 2.
Type Ⅱ:Two mixed metal organic-inorganic hybrid compounds, CuVO2(4,4’-bipyridine)(PO4), 3; CuVO2(4,4’-bipyridine)(AsO4), 4, have a pillared layer structure.
Type Ⅲ:The clustered vanadium phosphate, (4,4’H2bipyridine)[(VO2)4(PO4)2], 5, was a layer structure.
The formulations were confirmed by single-crystal X-ray diffraction, Energy-dispersive X-ray fluorescence spectroscopy (EDS), powder X-ray diffraction, thermogravimetric analysis (TGA), elemental analysis (EA), magnetic susceptibility measurements, and solid state NMR spectroscopy.
The compound 1 was the first mixed-metal phosphate. The structure consists of 2D neutral sheets of bimetallic oxide layers with the isonicotinate ligand being coordinated to copper in a bidentate fashion as a pendent group. The compound 2 was a noval zinc phosphate combined with isonicotinate ligand. Each Zn is tetrahedrally coordinated by three phosphate groups and one carboxylate group of the ligand in a mono- dentate fashion. So two compounds 1 and 2 being successfully synthesiz- ed would be the start for the study of the Metals/isonicotinate ligand/ phosphate system. The compounds 3 and 4 were isostructure linked through 4,4’-bipyridine pillars into a 3D framework. The compound 5 was a novel vanadium phosphate with V4O84+ clusters. The structure consists of phosphate-bridged vanadium (Ⅴ) clusters to form a layer structure in the presence of the protonated 4,4’-H2bipyridine as the structure-directing agent.
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