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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Hexameric polyoxometalates decorated by six 3d-4f heterometallic clusters
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Hexameric polyoxometalates decorated by six 3d-4f heterometallic clusters

机译:由六个3d-4f杂金属簇装饰的六聚多金属氧酸盐

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摘要

Two nanosized hexameric polyoxometalate-based solid state assemblies (H_2en)_6Na_(15)K_9[Dy_6Fe _6(H_2O)_(12)(SiW_(10)O_(38)) _6]·34H_2O (1) and K_(13)Na _(17)[H_2en]_3[Tb_6Fe_6(H _2O)_(12)(SiW_(10)O_(38))_6] ·40H_2O (2) (en = 1,2-ethylenediamine), decorated by six [Ln-(μ_3-O)_3-Fe] 3d-4f heterometallic clusters, have been synthesized by the hydrothermal method, and characterized by IR, element analysis, magnetic studies and the single-crystal X-ray analyses. The detailed study of the synthetic conditions reveals that the use of the organic ligands, pH value and the reaction temperature all play important roles in the synthesis of the 3d-4f heterometallic POMs. Magnetic study suggests the presence of antiferromagnetic interactions in these two compounds.
机译:两个基于纳米级六聚多金属氧酸盐的固态组装体(H_2en)_6Na_(15)K_9 [Dy_6Fe _6(H_2O)_(12)(SiW_(10)O_(38))_6]·34H_2O(1)和K_(13)Na _(17)[H_2en] _3 [Tb_6Fe_6(H _2O)_(12)(SiW_(10)O_(38))_ 6]·40H_2O(2)(en = 1,2-乙二胺),饰以六个[Ln通过水热法合成了-((μ_3-O)_3-Fe] 3d-4f团簇,并通过红外,元素分析,磁性研究和单晶X射线分析对其进行了表征。对合成条件的详细研究表明,有机配体的使用,pH值和反应温度均在3d-4f杂金属POM的合成中起重要作用。磁性研究表明在这两种化合物中存在反铁磁性相互作用。

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