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Heat capacities and thermodynamic properties of a 3D Cu(II) supramolecular complex |
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| Authors: | Cheng-Li Jiao Shuang Wang Xiao-Liang Si Zhi-Bao Li Shuang Liu Jian Zhang Li-Xian Sun Fen Xu Yu-Jia Sun Huai-Ying Zhou Yutaka Sawada |
| Institution: | 1. Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, People’s Republic of China 2. Graduate School of the Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China 3. Faculty of Chemistry & Chemical Engineering, Liaoning Normal University, Dalian, 116029, People’s Republic of China 4. College of Chemistry & Molecular Science, Wuhan University, Wuhan, 430072, People’s Republic of China 5. Department of Material Science & Engineering, Guilin University of Electrical Technology, Guilin, 541004, People’s Republic of China 6. Center for Hyper Media Research, Graduate School of Engineering, Tokyo Polytechnic University, 1583 Iiyama, Atsugi, Kanagawa, 243-0297, Japan |
| Abstract: | A 3D supramolecule (H3O)2Cu(2,6-pdc)2]·H2O (pdc = pyridinedicarboxylate) has been solvothermally synthesized and characterized by X-ray powder diffraction and FT-IR spectrum. The thermal decomposition characteristics of the complex were investigated by thermogravimetric analysis, which revealed a three-step mass loss process. The low-temperature molar heat capacities of crystalline (H3O)2Cu(2,6-pdc)2]·H2O were measured by temperature-modulated differential scanning calorimetry for the first time. A phenomenon of glass transition was observed. The thermodynamic parameters such as entropy and enthalpy relative to 298.15 K were calculated based on the above molar heat capacity data. |
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