Issue 12, 2023

Successive redox modulation in an iron(ii) spin-crossover framework

Abstract

Spin crossover (SCO) complexes capable of exhibiting distinct spin states under external stimuli have aroused intensive interest in materials science. Herein, we report an inverse-Hofmann-type metal–organic framework (MOF) [FeII(TPPE){AuI(CN)2}]I·2H2O·7TCE (1, TPPE = 1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl)-ethene, TCE = 1,1,2,2-tetrachloroethane) with hysteretic SCO behavior. Most importantly, the redox-active unit [AuI(CN)2] in 1 can be sequentially oxidized by I2 and Br2 to form the corresponding [AuIII(CN)2X2] units via single-crystal to single-crystal transformation, and then reduced to [AuI(CN)2] by L-ascorbic acid (AA). Accordingly, the SCO behavior is first regulated by successive redox reactions in the SCO field, which provides a platform for developing multi-responsive materials.

Graphical abstract: Successive redox modulation in an iron(ii) spin-crossover framework

Supplementary files

Article information

Article type
Research Article
Submitted
07 apr 2023
Accepted
14 maj 2023
First published
15 maj 2023

Inorg. Chem. Front., 2023,10, 3577-3583

Successive redox modulation in an iron(II) spin-crossover framework

B. Lyu, Z. Ruan, W. Cui, S. Wu, Z. Ni and M. Tong, Inorg. Chem. Front., 2023, 10, 3577 DOI: 10.1039/D3QI00644A

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