Chemical Manipulation of the Spin-Crossover Dynamics through Judicious Metal-Ion Dilution - Archive ouverte HAL Access content directly
Journal Articles Journal of the American Chemical Society Year : 2023

Chemical Manipulation of the Spin-Crossover Dynamics through Judicious Metal-Ion Dilution

Abstract

In 2019, our groups described a unique Fe II complex, [Fe(2Me L)(NCBH 3) 2 ] (2Me L = N,N'-dimethyl-N,N'-bis-(2-pyridylmethyl)-1,2-ethanediamine) possessing a low-spin ground state that is not easily accessible due to the extremely slow dynamics of the high-spin to low-spin phase transition. Herein, we report the successful chemical manipulation of this spin-crossover (SCO) process through controlled metal-ion dilutions. The emergence or suppression of the thermally induced SCO behavior was observed depending on the radius of the metal ion used for the dilution (Ni II or Zn II). Reversible photo-switching has been confirmed in all mixed-metal complexes whether the lowspin state is thermally accessible. Remarkably, the dilution with Zn II metal ions stabilizes HS Fe II complexes with complete suppression of the thermally induced SCO process without destroying the reversible photoswitchability of the material.
Fichier principal
Vignette du fichier
23, JACS 44 HAL2.pdf (12.2 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-04088054 , version 1 (03-05-2023)

Identifiers

Cite

Xiang Li, Dong Zhang, Yuqing Qian, Wenxuan Liu, Corine Mathonière, et al.. Chemical Manipulation of the Spin-Crossover Dynamics through Judicious Metal-Ion Dilution. Journal of the American Chemical Society, 2023, 145 (17), pp.9564-9570. ⟨10.1021/jacs.2c13697⟩. ⟨hal-04088054⟩
43 View
5 Download

Altmetric

Share

Gmail Facebook X LinkedIn More