| γ-[SiW10O36]8-夹心型稀土元素单取代多酸化合物的合成与表征 |
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| 引用本文： | 岳斌,江磊,孔祖萍,焦锋,林欣荣,金松林.γ-[SiW10O36]8-夹心型稀土元素单取代多酸化合物的合成与表征[J].高等学校化学学报,2004,25(2):199-203. |
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| 作者姓名： | 岳斌 江磊 孔祖萍 焦锋 林欣荣 金松林 |
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| 作者单位： | 复旦大学化学系,上海,200433 |
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| 基金项目： | 国家自然科学基金(批准号: 20371013)资助. |
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| 摘 要： | 利用缺位填充法合成了12个γ-SiW10O36]8-夹心型稀土元素单取代多酸化合物K13Ln(SiW10O36)2]·nH2O(Ln=La3+,Ce3+,Pr3+,Nd3+,Sm3+,Eu3+,Gd3+,Tb3+,Dy3+,Ho3+,Er3+,Yb3+).通过元素分析确定其组成,由红外光谱、紫外-可见吸收光谱、循环伏安及室温磁化率测定结果确认稀土离子与γ-SiW10O36]8-相配位;183WNMR及荧光光谱结果则表明,稀土离子处于2个γ-SiW10O36]8-构成的八配位环境中,标题化合物具有夹心型D2d对称性结构.
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| 关 键 词： | 稀土元素 两缺位γ-Keggin配体 夹心结构 |
| 文章编号： | 0251-0790(2004)02-0199-05 |
| 收稿时间： | 2003-04-23 |
Synthesis and Characterization of Sandwich Rare Earth Metal Monosubstituted Polyoxometalates with γ-[SiW10O36]8- as Ligand |
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| YUE Bin ,JIANG Lei,KONG Zu-Ping,JIAO Feng,LIN Xin-Rong,JIN Song-Lin.Synthesis and Characterization of Sandwich Rare Earth Metal Monosubstituted Polyoxometalates with γ-[SiW10O36]8- as Ligand[J].Chemical Research In Chinese Universities,2004,25(2):199-203. |
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| Authors: | YUE Bin JIANG Lei KONG Zu-Ping JIAO Feng LIN Xin-Rong JIN Song-Lin |
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| Institution: | YUE Bin *,JIANG Lei,KONG Zu-Ping,JIAO Feng,LIN Xin-Rong,JIN Song-Lin |
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| Abstract: | Twelve rare earth metal mono-substituted polyoxometalates, K13Ln(γ-SiW10O36)2]·nH2O(Ln=La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Yb3+), were synthesized by vacant sites-filling method by using γ- SiW10O36]8- as the ligand. The compounds were characterized by elemental analysis, UV-Vis absorption spectra, IR spectra, CV, paramagnetic measurement, fluorescence spectra and 183W NMR. These results indicate that the rare earth metal ion is coordinated with eight terminal oxygen atoms of two γ- SiW10O36]8- ligands with D2d symmetry and the title compounds have 1;2 sandwich structure. |
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| Keywords: | Rare earth metal Di-vacant γ-Keggin type ligand Sandwich structure |
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