Studies On Transition Metal Polyoxometalate Organic Coordination Polymers And Single Molecular Magnets

Transition metal Polyoxometalate organic coordination polymers are novel organic-iorganic hybrid materials, which have been of great interest because of their diversified structures and potential applications. The self-assemblies for this class of the materials are adopted to achieve purposeful synthesis through selecting the transition metal cations as templating and mukidentate organic ligands and polyoxometalates (POMs) as building blocks based on the principles of molecule design and crystal engineering.In this research, three new organic-inorganic hybrid compounds were hydrothermally synthesized. The reaction of WO₃, CoCl₂ and 4,4'-bipyridine at 170℃ yields compound [Co₂(bpy)₆(W₆O₁₉)₂] ( I ) ; the reaction of NH₄VO₃, CoCl₂ and 1,3-bis(4-pyridyl)propane(bpp) at 120℃ produces [Co(bpp)₂]₂(V₄O₁₂)( II), and the reaction of NH₄VO₃, MnCl₂ and 1,3-bis(4-pyridyl)propane(bpp) at 140 ℃ leads to (H₂bpp)₃...