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Thermal and light induced spin crossover behavior of a dinuclear Fe(II) compound
Xin Cheng1, Qian Yang, Chen Gao
1Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecule Engineering, Peking University, Beijing, 100871, China. wangbw@pku.edu.cn gaosong@pku.edu.cn.
Abstract:
A dinuclear Fe(II) compound has been prepared through the reaction of 2,5-dichloride-4-phenylimino-1,2,4-triazole (L) with Fe(BF4)2·6H2O, with the formula [Fe2(L)5(SCN)4](H2O) (1). X-ray, magnetic, and (57)Fe Mössbauer characterizations showed that compound exhibited a spin crossover (SCO) behavior with T1/2 = 150 K. The study shows that introducing chloride groups on the ligand exerts a positive effect on increasing T1/2 and making SCO more complete. A LIESST effect was also observed for through a light irradiation experiment.
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