| 吡嗪酰腙席夫碱单核Co(Ⅱ)配合物的合成与磁性 |
| Synthesis and Magnetic Characterization of Mononuclear Co(Ⅱ) Complex Based on Pyrazine-Containing Hydrazone Schiff Base Ligand |
|
| 摘要: 合成了一个基于吡嗪酰腙席夫碱配体H2L的单核Co （Ⅱ）配合物（NHEt3）[Co （HL）2]·3H2O （1），并通过红外光谱、热重分析、X射线单晶衍射分析及变温磁化率测定等对配合物进行了表征。X射线单晶衍射分析表明，该配合物包含1个Co （Ⅱ）、2个去质子化的HL-配体以及未参与配位的3个水分子和1个质子化三乙胺，中心Co （Ⅱ）与N2O4六配位形成扭曲的八面体构型。配合物1以及去除水分子后的1的磁性测试表明二者均具有缓慢的高低自旋转换，其不同之处归属为氢键对磁性的影响。 |
| 关键词: 酰腙配体 单晶结构 自旋转换 单核钴配合物 |
| 基金项目: 重庆文理学院重大科研项目培育基金（No.P2017CH10）和重庆市永川区科技局自然科学基金计划（No.2020nb0224）资助。 |
| Abstract: A mononuclear Co(Ⅱ)complex (NHEt3)[Co(HL)2] ·3H2O (1) based on a pyrazine-containing hydrazone Schiff base ligand H2L was synthesized and characterized by IR, thermogravimetric analysis, X-ray single diffraction and magnetic susceptibility measurements. X-ray single crystal analysis reveals that it consists of a Co(Ⅱ)ion, two deprotonated HL- ligands, three uncoordinated H2O and a protonated triethylamine. The central Co(Ⅱ)ion is six- coordinated with N2O4 donor sets to form distorted octahedral geometry. Magnetic susceptibility measurement of both complex 1 and the dehydrated 1 showed a gradual high spin to low spin transition, and the differences can be attributed to the hydrogen bonding effects on the magnetic properties. |
| Keywords: hydrazone ligand single crystal structure spin transition mononuclear Co complex |
| 投稿时间：2020-08-10 修订日期：2020-11-16 |
| 摘要点击次数: 948 |
| 全文下载次数: 481 |
| 陈瑜,王召东.吡嗪酰腙席夫碱单核Co(Ⅱ)配合物的合成与磁性[J].无机化学学报,2021,37(3):525-530. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
