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

被引：75
作者：
Zhang, Xiu-Tang [2 ]
Sun, Di [1 ]
Li, Bao [3 ]
Fan, Li-Ming [2 ]
Li, Bin [2 ]
Wei, Pei-Hai [2 ]
机构：
[1] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China
[2] Qilu Normal Univ, Dept Chem, Adv Mat Inst Res, Jinan 250013, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Hubei, Peoples R China
来源：
CRYSTAL GROWTH & DESIGN | 2012年 / 12卷 / 08期
基金：
中国博士后科学基金;
关键词：
COORDINATION POLYMERS; ROOM-TEMPERATURE; IRON(II) COMPOUNDS; CRYSTAL-STRUCTURE; TRANSFORMATION; HYSTERESIS; COMPLEXES; COMPOUND; SYSTEM; STABILITY;
D O I：
10.1021/cg3007876
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel three-dimensional (3D) Fe(II) metal-organic framework (MOF), [Fe-2(pptp)(4)center dot 2H(2)O](n), (1), constructed from the rigid 2-(3-(4-(pyridin-4-yl)pheny1)-1H-1,2,4-triazol-5-yOpyridine (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 similar to 20% high-spin character. Moreover, the framework of 1 shows unusual thermal stability to nearly 500 degrees C.
引用
收藏
页码：3845 / 3848
页数：4
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