Structure Switching and Modulation of the Magnetic Properties in Diarylethene‐Bridged Metallosupramolecular Compounds by Controlled Coordination‐Driven Self‐Assembly
作者:Zhao‐Yang Li、Jing‐Wei Dai、Marko Damjanović、Takuya Shiga、Jin‐Hua Wang、Jia Zhao、Hiroki Oshio、Masahiro Yamashita、Xian‐He Bu
DOI:10.1002/anie.201900789
日期:2019.3.22
three self‐assembled iron complexes that comprised an anti‐parallel open form (o‐Lanti), a parallel open form (o‐Lsyn), and a closed form (c‐L) of diarylethene conformers. Under kinetic control, FeII2(o‐Lanti)3 was isolated, which exhibited a dinuclear structure with diamagnetic properties. Under light‐irradiation control, FeII2(c‐L)3 was prepared and exhibited paramagnetism and spin‐crossover behaviour
我们报告了三种自组装的铁络合物,包括二芳基乙烯构象异构体的反平行开放形式(o- L反),平行开放形式(o - L syn)和封闭形式(c- L)。在动力学控制下,分离了Fe II 2(o- L anti)3,它显示出具有抗磁性的双核结构。在光辐照控制下,制备了Fe II 2(c L)3,并表现出顺磁性和自旋交叉行为。在热力学控制下和必不可少的[Fe III(Tp *)(CN)3 ] -,Fe II 2(o‐ L anti)3和Fe II 2(c‐ L)3转化为四核Fe III 2 Fe II 2(o‐ L syn)2,表现出在T 1/2 = 353 K时完成自旋交叉行为