| 锰(Ⅱ)配合物修饰的Preyssler型多金属氧酸盐的合成、晶体结构和催化性能 | |
| Synthesis, Crystal Structure and Catalytic Property of a Preyssler-Type Polyoxometalate Modified by Mn(Ⅱ) Complexes | |
| 摘要: 利用水热法合成了1个新的Mn(Ⅱ)-H2biim/H2O配合物修饰的Preyssler型多金属氧酸盐，{[Mn(H2biim)2(H2O)2]2[Mn(H2biim)3]5 Cl}[H(NaP5W30O110)]·20H2O (1)(H2biim=2，2’-联咪唑)，并通过单晶X-射线衍射、元素分析、IR光谱分析、热重分析和电化学分析等对其进行了表征，同时探讨了合成环己酮乙二醇缩酮的催化活性。结构分析表明，化合物1分子中含有1个[NaP5W30O110]14-多阴离子，其周围有7个游离的Mn(Ⅱ)-H2biim/H2O配合物单元，分子间通过N-H…O/OW和N-H…Cl两种类型的氢键构成三维网络结构。研究表明该化合物是1种可重复使用、性能良好、环境友好型羰基保护催化剂。 | |
| 关键词: Preyssler结构 钨磷酸盐 锰(Ⅱ)配合物 联咪唑 水热合成 催化性能 | |
| 基金项目: 辽宁省自然科学基金资助项目(No.2013020128)；全国大学生创新创业训练计划资助项目(No.201310165014)；辽宁省大学生创新创业训练计划资助项目(No.201210165003)。 | |
| Abstract: A new Preyssler-type polyoxometalate modified by Mn(Ⅱ)-H2biim/H2O fragments, namely {[Mn(H2biim)2(H2O)2]2[Mn(H2biim)3]5Cl}[H(NaP5W30O110)]·20H2O (1)(H2biim=2,2'-biimidazole) has been hydrothermally synthes-ized, and characterized by single-crystal X-ray diffraction, elemental analysis, thermogravimetric analysis and electrochemical analysis. Its catalytic activity for synthesis of cyclohexanone ethylene ketal has been investigated. Compound 1 contains a [NaP5W30O110]14- polyoxoanion, and seven isolated Mn(Ⅱ)-H2biim/H2O complex units. A 3D framework is constructed through N-H…O/OW and N-H…Cl hydrogen bonds between H2biim molecules and polyoxoanion or water molecules, and Cl-, and π-π interactions between the imidazole rings of biimidazole ligands. It was found that compound 1 is a new environmentally friendly catalyst and has good properties in recyclings for the protection of carbonyl compound. CCDC: 967599. | |
| Keywords: preyssler structure tungstophosphate manganese complex biimidazole hydrothermal synthesis catalytic activity | |
| 投稿时间：2013-10-23 修订日期：2014-01-27 | |
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| 于沫涵,朱浩天,白建萍,唐洋,张澜萃,安悦.锰(Ⅱ)配合物修饰的Preyssler型多金属氧酸盐的合成、晶体结构和催化性能[J].无机化学学报,2014,30(6):1221-1228. | |
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| Support information: 相关附件： file130798 Supporting Information.pdf | |
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