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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (24): 2700-2704. 上一篇    下一篇

研究论文

普鲁士蓝类配位聚合物KCd[Cr(CN)6]•H2O的合成、 结构及多孔性能研究

楚超霞a 袁爱华*,a 刘文艳a 沈湘黔b 孟献丰b

  

  1. (a江苏科技大学材料科学与工程学院 镇江 212003)
    (b江苏大学材料科学与工程学院 镇江 212003)

  • 投稿日期:2008-07-20 修回日期:2008-08-25 发布日期:2008-12-28
  • 通讯作者: 袁爱华

Synthesis, Structure and Porous Properties of Prussian Blue Analogue Coordination Polymer KCd[Cr(CN)6]•H2O

CHU, Chao-Xia a YUAN, Ai-Hua *,a LIU, Wen-Yan a
SHEN, Xiang-Qian b MENG, Xian-Feng b
  

  1. (a School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003)
    (b School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212003)
  • Received:2008-07-20 Revised:2008-08-25 Published:2008-12-28
  • Contact: YUAN, Ai-Hua

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以Cd2＋和[Cr(CN)6]3－为建筑基元通过自组装合成普鲁士蓝类配位聚合物KCd[Cr(CN)6]•H2O (1•H2O), 并用红外光谱、元素分析、单晶X射线衍射、粉末X射线衍射、热重分析和氮气吸附脱附等手段对其进行了表征. 配位聚合物1•H2O属于面心立方晶系, 空间群Fm-3m, 晶胞参数: a＝b＝c＝1.09059 mn, α＝β＝γ＝90°. 配位聚合物1•H2O是由K＋, Cd2＋, [Cr(CN)6]3－离子和一个结晶水分子组成的三维多孔结构. 热重分析结果表明失水样品1的骨架结构在120～ 200 ℃之间保持稳定. 氮气吸附脱附研究表明: 失水样品1具有683.6 m2•g－1的比表面积, 氮气最大吸附量为8.83 mmol•g－1.

关键词: 氰基桥联, 配位聚合物, 合成, 晶体结构, 吸附脱附

A Prussian blue analogue coordination polymer, KCd[Cr(CN)6]•H2O (1•H2O), has been synthesized based on Cd2＋and [Cr(CN)6]3－ as building blocks, which has been characterized by IR spectrum, elemental analysis, single crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, and N2 adsorption and desorption measurements. 1•H2O belongs to cubic system with space group Fm-3m, and cell parameters: a＝b＝c＝1.09059 mn, and α＝β＝γ＝90°. The structure of 1•H2O consists of K＋, Cd2＋, [Cr(CN)6]3－ and one lattice water molecule, which forms a three-dimensional porous structure. Thermogravimetric analysis indicates that the framework of the dehydrated samples 1 is stable between 120 and 200 ℃. N2 adsorption and desorption studies suggest that the dehydrated samples 1 possesses surface area of 683.6 m2•g－1 and the maximum adsorption of 8.83 mmol•g－1.

Key words: cyano-bridge, coordination polymer, synthesis, crystal structure, adsorption and desorption properties