| 基于吡啶取代的单臂氮氧自由基的钴(Ⅱ)配合物的合成、结构和磁性质 |
| Synthesis, structure, and magnetic property of a cobalt(Ⅱ) complex based on pyridyl-substituted imino nitroxide radical |
|
| 摘要: 用对硝基苯甲酸(HPNB)和一种单臂氮氧自由基反应，合成了一种新的配合物[Co (im4-py)2(PNB)2](im4-py=2-(4'-吡啶基)-4，4，5，5-四甲基咪唑啉-1-氧基自由基)，并对其进行X射线衍射、元素分析、红外和磁性质等表征。晶体结构分析表明，配合物中每个Co(Ⅱ)处于四配位的变形四面体构型中，分别与2个im4-py和2个PNB-配位。磁性质研究表明，配合物中Co(Ⅱ)离子和自由基之间存在着弱的铁磁相互作用。通过磁构交换机理对磁性质进行了解释。 |
| 关键词: 钴配合物 单臂氮氧自由基 晶体结构 磁性质 |
| 基金项目: 淮南师范学院科研创新团队建设计划资助。 |
| Abstract: A new cobalt(Ⅱ)-radical complex: [Co(im4-py)2(PNB)2] (im4-py=2-(4'-pyridyl)-4,4,5,5-tetramethylimidazole-1-oxyl, HPNB=p-nitrobenzoic acid) has been synthesized and characterized by X-ray diffraction analysis, elemental analysis, IR, and magnetic properties. X-ray diffraction analysis shows that the complex exists as mononuclear molecules and Co(Ⅱ)ion is four-coordinated with two radicals and two PNB- ligands. The magnetic susceptibility study indicates the complex exhibits weak ferromagnetic interactions between cobalt(Ⅱ) and im4-py radical. The magnetic property is explained by the magnetic and structure exchange mechanism. |
| Keywords: Co(Ⅱ) complex imino nitroxide radical crystal structure magnetic property |
| 投稿时间：2024-06-05 修订日期：2024-11-04 |
| 摘要点击次数: 252 |
| 全文下载次数: 145 |
| 王晓玲,张洪武,刘道富.基于吡啶取代的单臂氮氧自由基的钴(Ⅱ)配合物的合成、结构和磁性质[J].无机化学学报,2025,41(2):407-412. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
