标题：Unusual high thermal stablility of a 2D → 3D polycatenated Fe(II) metal-organic framework showing guest-dependent spin-crossover behavior and high spin-transition temperature
作者：Zhang, X.-T.;Sun, D.;Fan, L.-M.;Li, B.;Wei, P.-H.
作者机构：[Zhang, X.-T] Advanced Material Institute of Research, Department of Chemistry, Qilu Normal University, Jinan, 250013, China;[ Sun, D] Key Lab of Coll 更多
通讯作者地址：[Sun, D]Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China.
来源：Crystal growth & design
摘要：A novel three-dimensional (3D) Fe(II) metal-organic framework (MOF), [Fe _2(pptp) _42H _2O] _n (1), constructed from the rigid 2-(3-(4-(pyridin-4-yl)phenyl)-1H-1,2,4-triazol-5-yl)pyridine (Hpptp) ligand was synthesized and structurally characterized. Complex 1 exhibits a two-dimensional (2D) → 3D polycatenated framework based on inclined interlocked 2D 4 ~4-sql grids. Variable-temperature magnetic susceptibility measurements reveal that 1 is a rare example exhibiting a thermal-driven dehydration and consequently accompanied by a dramatic change of spin crossover (SCO) behaviors. Its spin transition temperature is as high as 390 K with ～20% high-spin character. Moreover, the framework of 1 shows unusual thermal stability to nearly 500 °C.