| 四核钬配合物的结构、慢磁驰豫行为及CO2催化转化性质 | |
| Crystal structure, slow magnetic relaxation behavior and conversion CO2 of a tetranuclear Ho(Ⅲ)-based complex | |
| 摘要: 使用多齿希夫碱配体通过溶剂热的方法合成了一例新的Ho4配合物,即[Ho4(NO3)2(acac)4(L)2(CH3OH)2]·2CH3CN,其中H4L=(E)-2-(羟甲基)-2-(((2-羟基萘-1-基)亚甲基)氨基)丙烷-1,3-二醇,acac=乙酰丙酮。X射线衍射分析表明,配合物呈中心对称的四核结构,中心的Ho1(Ⅲ)和Ho2(Ⅲ)均为八配位的三角十二面体几何构型。配合物1具有良好的溶剂稳定性。磁性研究表明配合物1具有慢磁弛豫行为。据我们所知,配合物1是一例少有的在零直流场下具有慢磁驰豫行为的Ho4配合物。值得一提的是,配合物1在催化CO2与环氧化合物的环加成反应中表现出较高的催化活性。 | |
| 关键词: Ho4配合物 结构 慢磁驰豫行为 催化 二氧化碳转化 | |
| 基金项目: 山西省高校科技创新项目(No.2021L404)资助。 | |
| Abstract: A novel Ho4 complex, namely[Ho4(NO3)2(acac)4(L)2(CH3OH)2]·2CH3CN, where H4L=(E)-2-(hydroxymethyl)-2-(((2-hydroxynaphthalen-1-yl)methylene)amino)propane-1,3-diol and acac=acetylacetone, has been constructed by using a polydentate Schiff base ligand (H4L) reacting with Ho(acac)3·2H2O. X-ray diffraction analysis indicates that complex 1 shows a central symmetric tetranuclear structure. Both eight-coordinated Ho1(Ⅲ) and Ho2(Ⅲ) ions possess a distorted triangular dodecahedron geometrical configuration. Complex 1 shows good solvent stability. The magnetic study reveals that complex 1 exhibits a slow relaxation of the magnetization behavior. To our knowledge, complex 1 is a rarely Ho(Ⅲ)-based complex displaying slow magnetic relaxation behavior under Hdc=0 Oe filed. Interestingly, complex 1 exhibited high catalytic activity and could effectively catalyze the cycloaddition reaction of CO2 with various epoxides. | |
| Keywords: Ho4 complex structure slow magnetic relaxation behavior catalysis conversion of CO2 | |
| 投稿时间：2022-07-21 修订日期：2023-03-31 | |
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| 王文敏,乔娜,董汕汕,陈英,辛晓艳,杨国利,方明.四核钬配合物的结构、慢磁驰豫行为及CO2催化转化性质[J].无机化学学报,2023,39(5):917-927. | |
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| Support information: 相关附件： 220336_Revised_Supporting_Information.doc | |
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