We report a spin crossover material based on a cyanido-bridged FeII–MoIV assembly, FeII2[MoIV(CN)8](1-(3-pyridyl)ethanol)8⋅4H2O. This compound has a cubic crystal structure in the space group and is composed of a three-dimensional cyanido-bridged FeII–MoIV coordination network with one crystallographic FeII site. It exhibits incomplete spin crossover, because 21% of the high-spin FeII sites (S = 2) changes to low-spin FeII sites (S = 0) in the temperature range between 200 and 50 K. Thermal hysteresis is not observed. Such an incomplete and gradual spin crossover is attributed to the elastic frustration between the high-spin and the low-spin FeII sites (e.g., alternating arrangement such as –HS–LS–HS–LS–).
Spin crossover phenomenon in a three-dimensional cyanido-bridged FeII–MoIV assembly
Note: This paper is part of the Special Topic on Spin Transition Materials: Molecular and Solid-State.
Shintaro Kawabata, Koji Nakabayashi, Kenta Imoto, Shin-ichi Ohkoshi; Spin crossover phenomenon in a three-dimensional cyanido-bridged FeII–MoIV assembly. J. Appl. Phys. 14 March 2021; 129 (10): 105501. https://doi.org/10.1063/5.0041958
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