Spin Crossover between the High-spin and Low-spin States and Dielectric Switching in the Ionic Crystals of a Fe(II) [2 × 2] Molecular Grid
Bull. Chem. Soc. Jpn., 2020, 93, 1583-1587
Y. Uezu, R. Tsunashima, C. Tanaka, M. Fujibayashi, J. Manabe, S. Nishihara, K. Inoue
DOI : 10.1246/bcsj.20200207

 

Abstract: We synthesized an Fe(II) [2 × 2] molecular grid with pyridyl-substituted bis-terdentate ligands. The molecular grid showed abrupt spin crossover between fully high-spin and fully low-spin states in a narrow temperature width of ∼10 K. The spin crossover event also included a first-order structural phase transition, in which the dielectric constant jumped atypically toward a low-spin state.