Hysteretic four-step spin-crossover in a 3D Hofmann-type metal-organic framework with aromatic guest.
Cui-Juan ZhangKai-Ting LianGuo-Zhang HuangSukhen BalaZhao-Ping NiMing-Liang TongPublished in: Chemical communications (Cambridge, England) (2019)
A new Hofmann-type metal-organic framework with bent pillar ligand, [Fe(dpoda){Ag(CN)2}2] (dpoda = 2,5-di-(pyridyl)-1,3,4-oxadiazole), was synthesized. Four-, two- and one-step spin-crossover (SCO) properties were obtained by using different sizes of aromatic guests. Most importantly, hysteretic four-step SCO behaviour with the sequence of LS ↔ HS0.25LS0.75↔ HS0.5LS0.5↔ HS0.67LS0.33↔ HS is observed for the first time.