Magnetic Bistability in the Crystaline Fullerene Radical Salt
Huapeng Ruan , Ke Li , Quanchun Sun , Min Liu , Zhongtao Feng , Xue Dong , Yue Zhao , Xinping Wang
Chinese Journal of Chemistry ›› 2024, Vol. 42 ›› Issue (17) : 2043 -2048.
Compounds with magnetic bistability is highly attractive for the construction of switches, thermal sensors, information-storage media and memory devices. Herein, we report a crystalline fullerene radical anion salt [Na(THF) 5]C 60 ( 1), obtained by the reduction of C 60 with Na in solution, which exhibits magnetic bistability accompanied with one magnetostructural transition, giving low temperature (LT), high temperature (HT) phases and a metastable phase. Fullerene radical anions (C 60 •-) in the structure were found arranged into a three-dimensional close-packed honeycomb subnetwork with hollow channels occupied by complex cations [Na(THF) 5] + as spacers. The magnetic bistability is attributed to structural transitions as the LT−IT phase transition was associated with the orientational disorder of fullerene anions and the distortion of the complex cations [Na(THF) 5] + in the 3D packing of fullerene anions.
Magnetic bistability / Fullerene radical / Structural transition / Crystal structure / Chain distortion / Fullerene / Magnetic materials / π-π stacking
2024 SIOC, CAS, Shanghai, & WILEY-VCH GmbH
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