A trinuclear{FeⅢ2FeⅡ}complex involving both spin and non-spin transitions exhibits three-step and wide thermal hysteresis

Xin-Hua Zhao; Dong Shao; Jia-Tao Chen; De-Xuan Gan; Jiong Yang; Yuan-Zhu Zhang

2022

Science China-Chemistry   Impact Factor & Quartile

1674-7291

The engineering of switchable molecules with magnetic multistability is lying on the cutting-edge research topics for integrating multi-switches and ternary memory devices.Here we presented a cyanide-bridged{FeⅢ2FeⅡ}desolvated complex{[(pzTp)FeⅢ-(CN)3]2[FeⅡ(L)]}(1),obtained through single-crystal-to-single-crystal(SCSC)transformation from its solvated phase{[(pzTp)-FeeulNⅢ(CN)3]2[Fngsa)]eⅡ(L)]wer),}2CH3OH·5H2O(1·sol).Remarkably,1 exhibited unprecedented three-step transition in magnetization with wide thermal hysteresis(44,40,and 36 K)in the temperature range of80-320 K.The detailed studies demonstrated that the tristable character originates from both an order-disorder structural phase transition(SPT)and a strongly cooperative two-step spin crossover(SCO)process.This work thus provides a new promising strategy for realizing multiple bistablity in magneti-zation by introducing two different transitions.

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WanFang

zgkx-eb202203012

Department of Chemistry,Southern University of Science and Technology(SUSTech),Shenzhen 518055,China

Xin-Hua Zhao,Dong Shao,Jia-Tao Chen,et al. A trinuclear{FeⅢ2FeⅡ}complex involving both spin and non-spin transitions exhibits three-step and wide thermal hysteresis[J]. Science China-Chemistry,2022,65(3):532-538.

Xin-Hua Zhao,Dong Shao,Jia-Tao Chen,De-Xuan Gan,Jiong Yang,&Yuan-Zhu Zhang.(2022).A trinuclear{FeⅢ2FeⅡ}complex involving both spin and non-spin transitions exhibits three-step and wide thermal hysteresis.Science China-Chemistry,65(3),532-538.

Xin-Hua Zhao,et al."A trinuclear{FeⅢ2FeⅡ}complex involving both spin and non-spin transitions exhibits three-step and wide thermal hysteresis".Science China-Chemistry 65.3(2022):532-538.