| [Bu4N]28[(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O的合成,表征及磁性研究 |
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| 引用本文： | 张大帅,张奇,古铁安,华英杰,王崇太.[Bu4N]28[(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O的合成,表征及磁性研究[J].海南师范大学学报(自然科学版),2009,22(2). |
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| 作者姓名： | 张大帅 张奇 古铁安 华英杰 王崇太 |
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| 作者单位： | 海南师范大学,化学与化工学院,海南,海口571158 |
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| 基金项目： | 海南省自然科学基金项目，海南省教育厅高等学校科研资助项目 |
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| 摘 要： | 在Na4PW11O39Fe(Ⅲ)(H2O)·11H2O,K4Fe(CN)6和Bu4NBr的混合水溶液中,合成了一个新的类普鲁士蓝杂多化合物Bu4N]28(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O,并通过元素分析、差热-热重、红外光谱、紫外光谱等分析手段对其进行了表征.分析结果表明,在该化合物中,PW11O39FeⅢ(H<,2O)4-的配位水分子被氰基取代,形成以FeⅡ为中心的类似于普鲁士蓝的八面体结构单元FeⅡ-CN-FeⅢPW11O39]6-磁性研究表明,该化合物为反铁磁性物质,在3.44K以上,其表现为铁磁性,磁化率随温度的下降而升高,居里常数为4.469 cm3Kmol-1外斯常数为-0.05(3)K,g因子为2.02.在3.44K以下,其表现为反铁磁性.磁性随温度的下降而降低.
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| 关 键 词： | 类普鲁士蓝 铁取代杂多化合物 反铁磁性 铁磁性 |
The Synthesis, Characterization and Magnetic Properties of the [Bu4N]28[(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O |
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| ZHANG Dashuai,ZHANG Qi,GO Tiean,HUA Yingjie,WANG Chongtai.The Synthesis, Characterization and Magnetic Properties of the [Bu4N]28[(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O[J].Journal of Hainan Normal University:Natural Science,2009,22(2). |
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| Authors: | ZHANG Dashuai ZHANG Qi GO Tiean HUA Yingjie WANG Chongtai |
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| Abstract: | A new type of PB analogue heteropolycompoundBu4N]28(PW11O39FeⅢ)6FeⅡ(CN)6]·13H2O was synthesized by the reaction of Na4PW11O39Fe(Ⅲ)(H2O)·11H2O,K4Fe(CN)6 and Bu4NBr in an aqueous solution. It was characterized by element analysis, TG-DTG, IR and UV. There exists a similar octahedron structure FeⅡ-CN-FeⅢPW11O39]6 to Prussian Blue in the new compound. Investigations to this compound in magnetic properties show an antiferromagnetism. At the temperature above 3.44K, the compound behaves like a ferromagnetism with an increase of molar susceptibility as the temperature was lowered. The Curie constant is 4.469 cm3Kmol-1 and the Weiss constant is -0.05 (3)K with a factor g of 2.02. Whereas at the temperature below 3.44K, the effective moment declines with a decrease of temperature, behaving as a dominant antiferromagnetic interaction. |
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| Keywords: | Prussian Blue analogue iron -substituted heteropolycompound antiferromaguetic ferro-magnetic |
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