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[1]江梦云,曾意迅,贺琦祺,等.取代基团对吡唑硼-亚铁体系自旋交叉配合物性能的影响[J].武汉工程大学学报,2023,45(03):276-283.[doi:10.19843/j.cnki.CN42-1779/TQ.202203007]
 JIANG Mengyun,ZENG Yixun,HE Qiqi,et al.Effects of Substituents on Properties of Spin Crossover Complexes inPyrazole Boron-Ferrous System[J].Journal of Wuhan Institute of Technology,2023,45(03):276-283.[doi:10.19843/j.cnki.CN42-1779/TQ.202203007]
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取代基团对吡唑硼-亚铁体系自旋
交叉配合物性能的影响
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
45
期数:
2023年03期
页码:
276-283
栏目:
材料科学与工程
出版日期:
2023-06-30

文章信息/Info

Title:
Effects of Substituents on Properties of Spin Crossover Complexes in
Pyrazole Boron-Ferrous System
文章编号:
1674 - 2869(2023)03 - 0276 - 08
作者:
江梦云曾意迅贺琦祺石胜伟*
武汉工程大学材料科学与工程学院,湖北 武汉 430205
Author(s):
JIANG MengyunZENG YixunHE QiqiSHI Shengwei*
School of Materials Science and Engineering,Wuhan Institute of Technology, Wuhan 430205, China
关键词:
自旋交叉配合物吡唑取代基吡唑硼-亚铁
Keywords:
spin crossover complex pyrazole substituent pyrazole boron-ferrous
分类号:
O482.54
DOI:
10.19843/j.cnki.CN42-1779/TQ.202203007
文献标志码:
A
摘要:
通过不同取代基对吡唑环配体进行修饰,制备了6种基于吡唑硼-亚铁的自旋交叉配合物,研究了取代基对自旋转变性能的影响。实验发现,吡唑硼-亚铁配合物均具有渐变型的自旋转变特性。吸电子取代基可以降低吡唑环的电子云密度,有利于低自旋态稳定,使得自旋转变温度升高;供电子取代基则增加了吡唑环的电子云密度,有利于高自旋态稳定,使得自旋转变温度降低;此外,具有较大空间位阻的取代基会抑制Fe-N键的增长,有利于低自旋态的稳定,使得自旋转变温度升高。本研究表明自旋交叉配合物的自旋转变温度可以通过配体修饰实现有效调控。
Abstract:
Six spin crossover complexes (SCOs) based on pyrazole boron ferrous complexes were prepared by the modification on pyrazole ligand with different substituents,and the effects of substituents on spin transition properties were investigated. It is found that pyrazole boron ferrous complexes possess spin transition properties in a gradual process. The electron-withdrawing groups reduce the density of electron cloud in pyrazole ring,which is beneficial to the stability of low spin states,resulting in a higher spin transition temperature. While the electron-donating groups enhance the density of electron cloud in pyrazole ring,which is beneficial to the stability of high spin states,resulting in a lower spin transition temperature. In addition,the substituent with large steric hindrance restrains the increase of Fe-N bond,which is beneficial to the stability of low spin states,resulting in a higher spin transition temperature. The study indicates that spin transition temperature of SCOs can be effectively regulated by ligand modification.

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备注/Memo

备注/Memo:
收稿日期:2022-03-04
基金项目:国家自然科学基金(52173183);湖北省自然科学基金(2021CFB598)
作者简介:江梦云,硕士研究生。E-mail:273877027@qq.com
*通讯作者:石胜伟,博士,特聘教授。E-mail:shisw@wit.edu.cn
引文格式:江梦云,曾意迅,贺琦祺,等. 取代基团对吡唑硼-亚铁体系自旋交叉配合物性能的影响[J]. 武汉工程大学学报,2023,45(3):276-283.
更新日期/Last Update: 2023-07-03