| 氢键桥连一维铁(Ⅲ)自旋交叉化合物的合成和性质 |
| Synthesis and Properties of an Iron(Ⅲ) Spin Crossover Compound with 1D Chains Bridged by Hydrogen Bonds |
|
| 摘要: 合成了一例单核铁（Ⅲ）化合物[FeⅢ（Him）2（4-MeOhapen）]（CH3SO3）（1，Him=imidazole，H2（4-MeOhapen）=N，N'-bis（4-methoxy-2-hydroxyacetophenylidene）ethylenediamine），并对其晶体结构与磁性质进行了表征。单晶X射线分析表明，该化合物中的磺酸根阴离子通过氢键桥连[FeⅢ（Him）2（4-MeOhapen）]+阳离子，并以此形成了一维链状结构。磁化率测试表明，该化合物具有突变型自旋交叉行为，其转变温度为T1/2↓=163 K及T1/2↑=167 K。这些研究结果表明，阴阳离子之间的氢键对改进自旋交叉化合物的性质具有重要作用。 |
| 关键词: 三价铁配合物 自旋交叉 单晶结构 氢键 |
| 基金项目: 国家重点研发计划项目（No.2018YFA0306002）和国家自然科学基金（No.21973039）资助。 |
| Abstract: A mononuclear Fe(Ⅲ) compound [FeⅢ(Him)2(4-MeOhapen)](CH3SO3) (1, Him=imidazole, H2(4-MeOhapen)=N,N'-bis(4-methoxy-2-hydroxyacetophenylidene)ethylenediamine) was synthesized and characterized structurally and magnetically. Single-crystal X-ray diffraction analysis revealed that the CH3SO3- anions bridge the [FeⅢ(Him)2(4-MeOhapen)]+ cations by moderate hydrogen bonds to form one-dimensional chain structures. Magnetic suscepti-bility measurements revealed that compound 1 exhibits an abrupt spin crossover (SCO) with transition temperatures T1/2↓=163 K and T1/2↑=167 K. These results indicate that hydrogen bonds formed between the cationic and anionic centers play an important role in improving the SCO properties. |
| Keywords: Fe(Ⅲ) compound spin crossover single-crystal structure hydrogen bond |
| 投稿时间：2020-02-26 修订日期：2020-03-21 |
| 摘要点击次数: 1769 |
| 全文下载次数: 893 |
| 王康杰,李鸿庆,孙宇辰,王新益.氢键桥连一维铁(Ⅲ)自旋交叉化合物的合成和性质[J].无机化学学报,2020,36(6):1143-1148. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
