两例具有大磁滞的氰根桥联{Fe^(Ⅲ)_(2)Ni^(Ⅱ)}单链磁体  

Two cyano‑bridged{Fe^(Ⅲ)_(2)Ni^(Ⅱ)}single‑chain magnets with huge magnetic hysteresis

作　　者：管雅慧 赵亮[1] 姚念涛 Hiroki Oshio 刘涛[1] GUAN Ya‑Hui;ZHAO Liang;YAO Nian‑Tao;Hiroki Oshio;LIU Tao(State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian,Liaoning 116024,China)

机构地区：[1]大连理工大学精细化工国家重点实验室,大连116024

出　　处：《无机化学学报》2023年第9期1775-1781,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.22103009,22025101,22222103,22173015,21871039,21801037,91961114,22071017)资助。

摘　　要：我们利用具有不同对称性的同分异构体,通过改变分子间氢键网络,操控单链磁体行为,成功合成了2例化合物:[Ni^(Ⅱ)(L1)][Fe^(Ⅲ)(Tp)(CN)_(3)]_(2)·3.5H_(2)O(1)和[Ni^(Ⅱ)(L2)][Fe^(Ⅲ)(Tp)(CN)_(3)]_(2)·3H_(2)O(2),其中Tp=hydrotris(pyrazolyl)borate,L1=3,4-bis(1H-imidazol-1-yl)thiophen,L2=1,2-bis(1H-imidazol-1-yl)thiophen)。磁性研究表明,1和2表现为具有不同矫顽场的单链磁体行为。1的矫顽场为8.41 kOe,而2的矫顽场为3.84 kOe。Herein,two compounds[Ni^(Ⅱ)(L1)][Fe^(Ⅲ)(Tp)(CN)_(3)]_(2)·3.5H_(2)O(1)和[Ni^(Ⅱ)(L2)][Fe^(Ⅲ)(Tp)(CN)_(3)]_(2)·3H_(2)O(2),where Tp=hydrotris(pyrazolyl)borate,L1=3,4‑bis(1H‑imidazol‑1‑yl)thiophen,L2=1,2‑bis(1H‑imidazol‑1‑yl)thiophen,were successfully synthesized by using isomers with different symmetries to change the intermolecular hydrogen bonding network and manipulate the single‑chain magnet behavior.The magnetic performance showed that 1 and 2 displayed single‑chain magnet behavior with huge coercive fields of 8.41 and 3.84 kOe,respectively.CCDC:2252145,1;2252151,2.

关 键 词：单链磁体 氰基桥联 氢键 矫顽场 

分 类 号：O614.813[理学—无机化学] O614.811[理学—化学]