高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (12): 2443-2447.doi: 10.7503/cjcu20190395

• 研究论文: 无机化学 • 上一篇    下一篇

Co(Ⅱ)-Zn(Ⅱ)掺杂配位聚合物的合成及物理性能

石宝珍,李杉,王佃鹏,周云志,孙锦玉()   

  1. 辽宁大学化学学院, 沈阳 110036
  • 收稿日期:2019-07-16 出版日期:2019-12-04 发布日期:2019-12-04
  • 通讯作者: 孙锦玉 E-mail:jinyusun@lnu.edu.cn
  • 基金资助:
    国家自然科学基金(20771049);中国博士后基金(2004035169);留学归国人员基金和辽宁省百千万人才基金资助.

Synthesis and Physical Properties of Cobalt-Zinc Hybrid Porous Metal-organic Frameworks

Baozhen SHI,Shan LI,Dianpeng WANG,Yunzhi ZHOU,Jinyu SUN()   

  1. College of Chemistry, Liaoning University, Shenyang 110036, China
  • Received:2019-07-16 Online:2019-12-04 Published:2019-12-04
  • Contact: Jinyu SUN E-mail:jinyusun@lnu.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(20771049);the China Postdoctoral Science Foundation(2004035169);the Scientific Research Foundation for the Returned Overseas Chinese Scholars, China and Liaoning BaiQianWan Talents Program.

摘要:

采用均苯三甲酸配体、 硝酸锌与硝酸钴反应, 一步合成了钴掺杂的锌配位聚合物Zn1-xCox(BTC)·(OH)(H2O)3(NMP)(DMF)(H2O)1.5(H3BTC为1,3,5-均苯三酸, NMP为1-甲基-2-吡咯烷酮, DMF为N,N'-二甲基甲酰胺, x=0~0.8). 该化合物结构经X射线单晶衍射确定, 属于立方晶系, 空间群P213, 晶胞参数a=1.43863(20) nm. 利用元素分析、 能量散色光谱(EDS)、 UV-Vis光谱、 X射线粉末衍射(XRD)、 热重分析(TGA)、 氮气吸附和磁性分析等表征手段对样品的物理性质进行了表征. 氮气吸附实验结果表明, 该配位聚合物具有良好的微孔吸附特性, Langmiur比面积为832 m 2/g, 孔径为0.84 nm; 元素分析结果表明, 钴/锌摩尔比为1∶1时, 在37~300 K温度范围内其磁性表现为反铁磁性, 并满足Curie-Weiss定律.

关键词: 金属有机骨架材料, 配位聚合物, 异核配合物, 磁性

Abstract:

Coordination polymer ZnCo(BTC)(OH)(H2O)3(NMP)(DMF)(H2O)1.5 was synthesized by slowly diffusing a balanced amount of organic amine into a solution of 1,3,5-benzenetricarboxylate(H3BTC), zinc nitrate and cobalt nitrate. X-ray single crystal diffraction shows that the compound crystallizes in cubic, space group P213, and its cell parameter is 1.43863(20) nm. Its physical properties were characterized by elemental analysis(EA), energy-dispersive X-ray spectroscopy(EDS), X-ray powder diffraction(XRD), N2 sorption and variable-temperature magnetic susceptibility. The gas sorption shows this compound holds Ⅰ-isotherm characteristic of micropore, which is 0.84 nm of pore size and 832 m 2/g of langmiur surface area. The magnetic results show that it exhibits antiferromagnetism in the temperature range of 37—300 K.

Key words: Metal-organic frameworks, Coordination polymer, Heterometal complex, Magnetic property

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