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高等学校化学研究

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Synthesis, Structures and Properties of Three New Compounds Based on Multidentate Ligand Containing Triazole and Pyrimidine

LÜ Lei, MU Bao, LI Na, HUANG Rudan   

  1. Key Laboratory of Cluster Science, Ministry of Education, Department of Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China
  • 收稿日期:2015-02-09 修回日期:2015-06-05 出版日期:2015-10-01 发布日期:2015-06-23
  • 通讯作者: HUANG Rudan, E-mail: huangrd@bit.edu.cn E-mail:huangrd@bit.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(Nos.21271024, 20971014) and the Natural Science Foundation of Beijing City, China(No.2112037).

Synthesis, Structures and Properties of Three New Compounds Based on Multidentate Ligand Containing Triazole and Pyrimidine

LÜ Lei, MU Bao, LI Na, HUANG Rudan   

  1. Key Laboratory of Cluster Science, Ministry of Education, Department of Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2015-02-09 Revised:2015-06-05 Online:2015-10-01 Published:2015-06-23
  • Contact: HUANG Rudan, E-mail: huangrd@bit.edu.cn E-mail:huangrd@bit.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.21271024, 20971014) and the Natural Science Foundation of Beijing City, China(No.2112037).

摘要:

Three new compounds, namely, [Zn(mtpo)2(H2O)4](1), [Cd(mtpo)2·CH3CH2OH]n(2) and [Mn(mtpo)2·CH3CH2OH]n(3)(Hmtpo=4,7-dihydro-5-methyl-7-oxo-[1,2,4]triazolo[1,5-a]pyrimidine), have been synthesized via hydrothermal or solvothermal methods and characterized by means of elemental analyses, Fourier transform infrared(FTIR) spectroscopy, powder X-ray diffraction(PXRD), thermogravimetric analysis(TGA) and single-crystal X-ray diffraction. The results obtained from the single-crystal X-ray diffraction indicate that compound 1 has a mononuclear structure, and crystallizes in a monoclinic crystal system with P21/c space group, which exhibits a 2D supramolecular network constructed by hydrogen bonds and π-π interactions. Compounds 2 and 3 are isomorphous and crystallize in a tetragonal system with space group of I41/a. The M2+(M=Cd, Mn) ions in compounds 2 and 3 have the octahedral coordination geometry. Hmtpo acts as a bridging ligand linking the metal ions to form an infinite 3D framework with 4-connected {42·84} topology. There are hydrogen bonds between the guest ethanol molecules and the mtpoligands, which make the ethanol molecules exist in a 3D framework. In addition, luminescent properties of compounds 1 and 2 as well as magnetic property of compound 3 were investigated and water vapor adsorption and nitrogen sorption for compounds 2 and 3 were researched at 298 and 77 K, respectively.

关键词: Metal-organic framework(MOF), Hydrogen bond, Luminescent property, Magnetic property, Water vapor sorption, Nitrogen sorption

Abstract:

Three new compounds, namely, [Zn(mtpo)2(H2O)4](1), [Cd(mtpo)2·CH3CH2OH]n(2) and [Mn(mtpo)2·CH3CH2OH]n(3)(Hmtpo=4,7-dihydro-5-methyl-7-oxo-[1,2,4]triazolo[1,5-a]pyrimidine), have been synthesized via hydrothermal or solvothermal methods and characterized by means of elemental analyses, Fourier transform infrared(FTIR) spectroscopy, powder X-ray diffraction(PXRD), thermogravimetric analysis(TGA) and single-crystal X-ray diffraction. The results obtained from the single-crystal X-ray diffraction indicate that compound 1 has a mononuclear structure, and crystallizes in a monoclinic crystal system with P21/c space group, which exhibits a 2D supramolecular network constructed by hydrogen bonds and π-π interactions. Compounds 2 and 3 are isomorphous and crystallize in a tetragonal system with space group of I41/a. The M2+(M=Cd, Mn) ions in compounds 2 and 3 have the octahedral coordination geometry. Hmtpo acts as a bridging ligand linking the metal ions to form an infinite 3D framework with 4-connected {42·84} topology. There are hydrogen bonds between the guest ethanol molecules and the mtpoligands, which make the ethanol molecules exist in a 3D framework. In addition, luminescent properties of compounds 1 and 2 as well as magnetic property of compound 3 were investigated and water vapor adsorption and nitrogen sorption for compounds 2 and 3 were researched at 298 and 77 K, respectively.

Key words: Metal-organic framework(MOF), Hydrogen bond, Luminescent property, Magnetic property, Water vapor sorption, Nitrogen sorption