高核稀土簇合物的调控合成与磁性研究

近年来，多核稀土簇合物以其独特的空间拓扑结构和光、电、磁、催化性能受到人们广泛的关注,已经成为团簇研究中最热门的课题之一。 在多核稀土簇合物的研究中， 精确控制复杂分子结构的能力对于开发其功能化应用是至关重要的。 本论文中，以立方烷形[Er4(μ3-OH)4]8+结构单元的组装模式为例，我们提出了一种使用明确阴离子模板指导高核稀土簇合物设计组装的思路。 其中：以 Cl-或 Br-离子为模板， 五个[Er4(μ3-OH)4]8+结构单元组装形成轮状[Er15(μ3-H)20]25+结构单元； 以 I-离子为模板， 四个[Er4(μ3-OH)4]8+结构单元组装形成轮状Er12(μ3-OH)16]20+结构单元； 以 I-与 CO32-离子为模板， 十二个[Er4(μ3-OH)4]8+结构单元组装形成船形[Er34(μ3-OH)48]56+结构单元； 以 I-、 CO32-与 NO3-离子为模板， 十八个[Er4(μ3-OH)4]8+结构单元组装形成碗状[Er48(μ3-OH)72]72+结构单元； 以 I-、 CO32-与 NO3-离子为模板 且 在 溶 剂 热 条 件 下 ， 二 十 四 个 [Er4(μ3-OH)4]8+结 构 单 元 组 装 形 成 笼 状[Er60(μ3-OH)96]84+结构单元。 这一系列多核稀土簇合物不仅提供了研究多核稀土簇合物磁构效应的思路，而且揭示了一种阴离子导向的逐步组装机理。
这项工作提供了一个非常罕见的定向设计与可控合成高核稀土簇合物的例
子，有望指导未来具有复杂结构的超分子簇合物的自组装合成。
 

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