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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
A Mixed-Valence {Fe-13} Cluster Exhibiting Metal-to-Metal Charge-Transfer-Switched Spin Crossover
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论文类型：期刊论文
发表时间：2020-09-14
发表刊物：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷号：59
期号：38
页面范围：16393-16397
ISSN号：1433-7851
关键字：iron; magnetism; metal-to-metal charge transfer; mixed-valence; spin crossover
摘要：It is promising and challenging to manipulate the electronic structures and functions of materials utilizing both metal-to-metal charge transfer (MMCT) and spin-crossover (SCO) to tune the valence and spin states of metal ions. Herein, a metallocyanate building block is used to link with a Fe-II-triazole moiety and generates a mixed-valence complex {[(Tp(4-Me))Fe-III(CN)(3)](9)[Fe-4(II)(trz-ph)(6)]}.[Ph3PMe](2).[(Tp(4-Me))Fe-III(CN)(3)] (1; trz-ph=4-phenyl-4H-1,2,4-triazole). Moreover, MMCT occurs between Fe(III)and one of the Fe(II)sites after heat treatment, resulting in the generation of a new phase, {[(Tp(4-Me))Fe-II(CN)(3)][(Tp(4-Me))Fe-III(CN)(3)](8)[(FeFe3II)-Fe-III(trz-ph)(6)]}. [Ph3PMe](2).[(Tp(4-Me))Fe-III(CN)(3)] (1 a). Structural and magnetic studies reveal that MMCT can tune the two-step SCO behavior of1into one-step SCO behavior of1 a. Our work demonstrates that the integration of MMCT and SCO can provide a new alternative for manipulating functional spin-transition materials with accessible multi-electronic states.