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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
Spin transitions in a series of [Fe(pybox)(2)](2+) complexes modulated by ligand structures, counter anions, and solvents
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论文类型：期刊论文
发表时间：2016-01-01
发表刊物：INORGANIC CHEMISTRY FRONTIERS
收录刊物：SCIE
卷号：3
期号：12
页面范围：1624-1636
ISSN号：2052-1553
摘要：Herein, we investigate the spin transition properties in a series of mononuclear Fe(II) complexes constructed by two pybox ligands and four counter anions. 1(BF4) undergoes an abrupt spin-transition at around 150 K, which proceeds to 50% completeness and is accompanied by a structural phase transition. 1(BPh4)center dot MeCN, 2(ClO4), and 2(BF4) all display gradual and complete SCO behaviours around or above ambient temperature. The desolvated compound 1(BPh4) exhibits a gradual but incomplete SCO center dot 2(PF6)center dot MeCN, 2(PF6) and 2(BPh4) show a two-step SCO. The well-defined two-step SCO of 2(BPh4) takes place at 100-200 K (T-1/2 = 150 K) and 400-500 K (T-1/2 = 446 K). In contrast, compounds 1(BF4)center dot MeCN, 1(PF6)center dot MeCN center dot Et2O and 1(PF6) remain high-spin at the measured temperatures. The LIESST (light induced excited spin state trapping) effect of several SCO compounds are also investigated, which display photo-conversion during light irradiation at low temperature at a relatively high level. Our results demonstrate that the [Fe(pybo(x))(2)](2+) series of complexes will become a new versatile system in spin-crossover research.