A new 3D Cd(II) metal–organic framework with discrete (H2O)6 clusters based on flexible cyclohexane-1,2,4,5-tetracarboxylic acid ligand |
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| Affiliation: | 1. Materials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;2. Department of Chemistry, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Klong Luang, Pathumthani 12121, Thailand;3. Department of Physics, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Klong Luang, Pathumthani 12121, Thailand;4. Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, PR China;2. School of Chemistry and Chemical Engineering, Huangshan University, Huangshan 245041, PR China |
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| Abstract: | A 3D metal–organic framework (MOF), {Cd2(CTA)(bpp)2(H2O)2] (H2O)3}n (1) (H4CTA = cyclohexane-1,2,4,5-tetracarboxylic acid, bpp = 1,3-bis(4-pyridyl)propane), has been synthesized and structurally characterized by elemental analysis, IR and powder X-ray diffraction. Single-crystal X-ray measurement reveals that the complex presents three-dimensional frameworks with 1D channels which are filled by unique (H2O)6 clusters. Noteworthily, the H4CTA ligands keep exclusive conformation, where the carboxyl groups adopt different coordination modes, and the bpp ligands perform two different conformations. Thermogravimetric analysis demonstrates that 1 features favorable thermal stability. Photoluminescence property of 1 is investigated in the solid state at room temperature as well. |
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