由[GdMo(12) O(42) ](9-) 离子和九个协调的Gd(III) 离子组成的新型三维框架的热水组合
Chuan-De Wu1, Can-Zhong Lu, Hong-Hui Zhuang
1The State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Journal of the American Chemical Society
|April 11, 2002
概括
研究人员在异构聚合物化学中使用加多 (Gd) 合成了一种新的3D框架. 这种偏磁性兰坦化物为Silverton型离子引入了独特的磁性和结构复杂性.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
背景情况:
- 异多聚聚酸盐是复杂的无机离子,具有多样化的结构和应用.
- 兰化物离子,特别是像加多 (Gd) 这样的偏磁性离子,具有独特的磁性和协调性质.
- 西尔弗顿型结构是一种特定的多氧甲酸框架.
研究的目的:
- 合成和描述一种新型的三维框架,将一个偏磁性兰坦化物 (Gd) 纳入一个西尔弗顿型异多重聚合物.
- 为了研究Gd(III) 在异多聚聚合基结构中的协调行为.
- 为了探索产生的材料的磁性特性.
主要方法:
- 使用热水合成来制造晶体材料.
- 使用X射线衍射来确定三维框架结构.
- 使用磁感应度测量和电子磁共振 (EPR) 光谱来研究磁性行为.
主要成果:
- 一个新的3D框架, [Gd(H(2) O) ((3))) ((3)) [GdMo(12) O(42) ]·3H(2) O,已成功合成.
- 该结构由9个协调的Gd(III) 阴离子连接在一起的Silverton型离子组成.
- 参磁性Gd(III) 阴离子首次被引入到西尔弗顿型阴离子中心.
- 磁性易受性表明弱反铁磁性行为,归因于O-Mo-O单位转换,由EPR证实.
结论:
- 将偏磁性Gd(III) 纳入Silverton类型的异多聚聚聚酸框架,产生了一个新的3D结构.
- 这项研究表明,胺离子成功地集成到聚氧甲酸盐化学中,扩大了结构多样性.
- 观察到的弱反铁磁性行为为材料内的电子相互作用提供了洞察力.
相关概念视频
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