Syntheses, Structures And Properties Of Some Novel Polyoxometalates Decorated By Coordinated Transition Metal

Recently, the design and synthesis of organic-inorganic hybrid compounds based on polyoxometalate blocks are of great interest owing to not only their intriguing structural frameworks but also potential applications in catalysis, medicine and materials etc.In this thesis, twelve organic-inorganic hybrid compounds have been synthesized on the basis of hydrothermal technique and/or organic solvent synthesis methods and structurally characterized by elemental analyses, IR and single crystal X-ray diffractions. The thermal stabilities, fluorescent properties, electrochemical behavior and catalytic activity of a part of the compounds have been studied.(i) Ten new organic-inorganic hybrid compounds (1～10) have been synthesized based on hydrothermal technique by the introductin of {M_xL_y}(M = transiton metal ions, L = N-donor ligands) fragments and structurally characterized:[Ag(4,4'-bipy)](OH){[Ag(4,4'-bipy)]2[PAgW₁₂O₄₀]}·3.5H₂O(1){[Ag^â… (4,4'-bipy)]₃[PW₁₂O₄₀]}·(4,4'-bipy)·4H₂O(2){[Ag^â… (py)₂]₄[PW₁₂^â…¥O₄₀]}H₂[PW₁₂^â…¥O₄₀]·2C₅H₈(3){[Ag^â… ( 1,10-phen)₂]₄F[PW₁₂O₄₀]} (4)[Cu^â… (4,4'-bipy)]₂(H₃O) [PMo₁₂^â…¥O₄₀]·4.5H₂O (5)[Co^â…¡(2,2'-bipy)₂(H₂O)]₂[SiW₁₂^â…¥O₄₀]·2H₂O(6){[Cu^â…¡( 1,10-phen)]₂[PMo^12â…¥O₄₀]} [Cu^â…¡(C₈N₄H₆)(OH)₃] (7)[Mnâ…¡(1,10-phen)₃]₂[PW₁₁^â…¥V^â…¤O₄₀](8)[Cu^â… (2,2'-bipy)₂]₃[PW₁₂^â…¥O₄₀](9)[Cd(2,2'-bipy)₃]₂[PMo^â…¤Mo₁₁^â…¥O₄₀] (10)(ii) Two discrete cagelike complexes (11 and 12) based on organic group and POMs unit have been synthesized and structurally characterized:[H₆Mo₈^â…¥O₂₇]·3C₄N₂H₁₀ (11)[H₃PMo₁₂O₄₀]·3(4,4'-bipy)·4H₂O(12)...