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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：化工学院院长、党委副书记
性别：男
毕业院校：北京大学
学位：博士
所在单位：化工学院
学科：无机化学. 应用化学. 精细化工
办公地点：大连理工大学西部校区F208
联系方式：0411-84986296 liutao@dlut.edu.cn https://liutao.dlut.edu.cn/
电子邮箱：liutao@dlut.edu.cn
Controlling assembly and single-molecule magnet behavior of Fe-Ni clusters utilizing steric effect
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论文类型：期刊论文
发表时间：2018-07-01
发表刊物：INORGANIC CHEMISTRY COMMUNICATIONS
收录刊物：SCIE
卷号：93
页面范围：87-91
ISSN号：1387-7003
关键字：Cyanide bridge; Tunable assembly; Ferromagnetic interactions; Single-molecule magnets; Steric effect
摘要：Utilizing the building block [(Tp(R))Fe-III(CN)(3)](-) featuring different steric hindrance, a trinuclear [Ni-II (4-Clbpy)(2)] [(pzTp)Fe-III(CN)(3)](2)center dot 4H(2)O (1) (pzTp = tetrakis(pyrazolyl)borate; 4-Clbpy = 4-chlorine-2,2'-dibipyridine) and a tetranuclear {[Ni-II(4-ClbPy)(2)] [(TP*)Fe-III in (CN)(3)]}2 center dot 4CH(3)OH center dot 2H(2)O (2) (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate) were successfully synthesized. Magnetic studies revealed that both compound 1 and 2 exhibited intramolecular ferromagnetic interaction. Dynamic susceptibility study indicated that compound 2 exhibited slow magnetic relaxation. The relaxation energy barrier was Delta/k(B) = 62.31 K with the pre-exponential factor of tau(0) = 2.87 x 10(-10) s. In addition, compound 2 can exhibit hysteresis at 1.8 K.