Syntheses, Structures, And Adsorpion Properties Of Microporous Compounds Based On Polyoxometalates

In the thesis, seven microporous ionic crystals based on different metal-cation clustrs and polyoxoanion clusters have been synthesized successfully via conventional method. Herein, the structures, elemental analysis, TG, IR, UV-Vis spectra and PXRD of the complexes have been characterized, and guest adsorption properties of these complexes were also investigated.1. Two complexes have been synthesized via choosing metal-cation cluster (?)2. Two complexes have been synthesized via selecting metal-cation cluster [Cr₃O(OOCCH₃)₆(H₂O)₃]⁺ and the Dawson-type POMs which have the same coordinated atom (W) and different heteroatoms (M=P/As): (?)3. Complex 5 has been synthesized by selecting metal-cation cluster (?)4. Complex 7 has been synthesized by selecting metal-cation cluster (?)Compound 1-7 are all microporous complexes which are constructed via electrostatic interaction, hydrogen bonds, coordination bonds of counter ions K⁺ and Na⁺. The existence of porous in compounds 1-7 leads to a fine property of guest inclusion. Alcohols adsorption studies illustrated that the adsorption property is relevant to the diversities of the metal and carboxylic acid in metal-cation cluster, coordination atom and heteroatom in polyoxometalates.