Reversible light-induced spin state switching in a dinuclear Fe(II) spin crossover complex

Jun-Li Wang; Hang-Yue Zhou; Liang Zhao; Yin-Shan Meng; Tao Liu

doi:10.1039/d3dt02691d

Reversible light-induced spin state switching in a dinuclear Fe(II) spin crossover complex

Dalton Trans. 2024 May 7;53(18):7669-7676. doi: 10.1039/d3dt02691d.

Authors

Jun-Li Wang¹, Hang-Yue Zhou¹, Liang Zhao², Yin-Shan Meng², Tao Liu²

Affiliations

¹ School of Chemistry and Materials Engineering, Xinxiang University, 191 Jinsui Rd., 453003 Xinxiang, China. wangjunli@xxu.edu.cn.
² State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., 116024 Dalian, China.

PMID: 38646797
DOI: 10.1039/d3dt02691d

Abstract

A dinuclear Fe(II) spin crossover (SCO) complex with the formula [Fe₂L₅(NCS)₄]·2DMF·2H₂O (1) was synthesised from 1-naphthylimino-1,2,4-triazole (L). Complex 1 exhibits an incomplete thermally induced spin transition with a transition temperature T_1/2 of 95 K and a thermally trapped metastable high-spin state at low temperatures. Furthermore, it undergoes a reversible light-induced spin crossover by alternate irradiation with 532 and 808 nm lasers.