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Heat capacities and thermodynamic properties of Ni9(btz)12(DMA)6(NO3)6 |
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| Authors: | Yi-Xi Zhou Li-Xian Sun Zhong Cao Fen Xu Chun-Hong Jiang Cheng-Li Jiao Hui Zhang Jian Zhang Huai-Ying Zhou Fen Li Zi-Ming Zhao Huang-Zhi Zhang |
| Institution: | 1. Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, People’s Republic of China 2. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, 410004, People’s Republic of China 3. Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, People’s Republic of China 4. Department of Material Science & Engineering, Guilin University of Electrical Technology, Guilin, 541004, China |
| Abstract: | The low-temperature molar heat capacity of crystalline Ni9(btz)12(DMA)6(NO3)6 (1) (btz = benzotriazolate; DMA = N,N′-dimethylacetamide) was measured by temperature-modulated differential scanning calorimetry for the first time. The thermodynamic parameters such as entropy and enthalpy relative to reference temperature 298.15 K were obtained based on the above molar heat capacity data. The compound was synthesized by solvothermal method and characterized by powder X-ray diffraction and FT-IR spectra. Moreover, the thermal stability and the decomposition mechanism of Ni9(btz)12(DMA)6(NO3)6 were investigated by thermogravimetry (TG) analysis under air atmosphere from 300 to 873 K. The experimental results through TG measurement demonstrate that the compound has a two-stage mass loss in air flow. |
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