摘要
Three new compounds, namely, [Zn（mtpo）2（H2O）4]（l）, [Cd（mtpo）2-CH3CH2OH].（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（FYIR） 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 M^2＋（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 {4^2·8^4} topology. There are hydrogen bonds between the guest ethanol molecules and the mtpo ligands, 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.
Three new compounds, namely, [Zn（mtpo）2（H2O）4]（l）, [Cd（mtpo）2-CH3CH2OH].（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（FYIR） 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 M^2＋（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 {4^2·8^4} topology. There are hydrogen bonds between the guest ethanol molecules and the mtpo ligands, 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.
基金
Supported by the National Natural Science Foundation of China（Nos.21271024, 20971014） and the Natural Science Foundation of Beijing City, China（No.2112037）.
