|
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
Effect of Intermolecular Interactions on Metal-to-Metal Charge Transfer: A Combined Experimental and Theoretical Investigation
点击次数：
论文类型：期刊论文
发表时间：2019-11-18
发表刊物：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
收录刊物：PubMed、SCIE
卷号：58
期号：47
页面范围：17009-17015
ISSN号：1433-7851
关键字：cobalt; metal-to-metal charge transfer; spin transition; thermochromics; pi center dot center dot center dot pi interactions
摘要：Understanding the effects of intermolecular interactions on metal-to-metal charge transfer (MMCT) is crucial to develop molecular devices by grafting MMCT-based molecular arrays. Herein, we report a series of solvent-free {Fe2Co2} compounds sharing the same cationic tetranuclear {[Fe(PzTp)(CN)(3)](2)[Co(dpq)(2)](2)}(2+) (PzTp(-)=tetrakis(pyrazolyl)borate, dpq=dipyrido[3,2-d:2',3'-f]quinoxaline) square units but having anions with different size, including BF4-, PF6-, OTf-, and [Fe(PzTp)(CN)(3)](-). Intermolecular pi center dot center dot center dot pi interactions between dpq ligands, which coordinate to cobalt ions in the {[Fe(PzTp)(CN)(3)](2)[Co(dpq)(2)](2)}(2+) units, can be modulated by introducing different counterions, regulating the distortion of the CoN6 octahedron and ligand field around the cobalt ions. This change results in different MMCT behavior. Computational analyzes reveal the substantial role of the intermolecular interactions tuned by the presence of different counteranions on the MMCT behavior.