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Structure Switching and Modulation of the Magnetic Properties in Diarylethene‐Bridged Metallosupramolecular Compounds by Controlled Coordination‐Driven Self‐Assembly

DOI

81

Citations

59

References

2019

Year

Zhao‐Yang Li, Jing‐Wei Dai, Marko Damjanović, Takuya Shiga, Jin‐Hua Wang, Jia Zhao, Hiroki Oshio, Masahiro Yamashita, Xian‐He Bu
Angewandte Chemie International Edition

Abstract

We report three self-assembled iron complexes that comprised an anti-parallel open form (o-L<sub>anti</sub> ), a parallel open form (o-L<sub>syn</sub> ), and a closed form (c-L) of diarylethene conformers. Under kinetic control, Fe<sup>II</sup> <sub>2</sub> (o-L<sub>anti</sub> )<sub>3</sub> was isolated, which exhibited a dinuclear structure with diamagnetic properties. Under light-irradiation control, Fe<sup>II</sup> <sub>2</sub> (c-L)<sub>3</sub> was prepared and exhibited paramagnetism and spin-crossover behaviour. Under thermodynamic control and in the presence of indispensable [Fe<sup>III</sup> (Tp*)(CN)<sub>3</sub> ]<sup>-</sup> , Fe<sup>II</sup> <sub>2</sub> (o-L<sub>anti</sub> )<sub>3</sub> and Fe<sup>II</sup> <sub>2</sub> (c-L)<sub>3</sub> transformed into tetranuclear Fe<sup>III</sup> <sub>2</sub> Fe<sup>II</sup> <sub>2</sub> (o-L<sub>syn</sub> )<sub>2</sub> , which exhibited complete spin-crossover behaviour at T<sub>1/2</sub> =353 K.

References

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