| Low-temperature heat capacities and thermodynamic properties of rare-earth triisothiocyanate hydrates (Ⅲ)——Sm(NCS)_3·6H_2O,Gd(NCS)_3·6H_2O,Yb(NCS)_3·6H_2O and Y(NCS)_3·6H_2O |
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| 作者姓名： | 谭志诚 Matsuo Takasuke Suga Hiroshi 张志英 尹敬执 蒋本杲 孙同山 |
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| 作者单位： | Dalian Institute of Chemical Physics，Chinese Academy of Sciences，Dalian 116023，China，Microcalorimetry Research Center and Department of Chemistry，Faculty of Science，Osaka University，Toyonaka，Osaka 560，japan，Microcalorimetry Research Center and Department of Chemistry，Faculty of Science，Osaka University，Toyonaka，Osaka 560，japan，Thermochemistry Laboratory，Northwestern University，Xi'an 710069，China，Department of Chemistry，Shandong University，Jinan 250100，China，Department of Chemistry，Shandong University，Jinan 250100，China，Department of Chemistry，Shandong University，Jinan 250100，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China |
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| 摘 要： | The heat capacities of four RE isothiocyanate hydrates,Sm( NCS)3 6H2O,Gd( NCS)3 6H2O,Yb(NCS)3 6H2O and Y( NCS)3 6H2O,have been measured from 13 to 300 K with a fully-automated adiabatic calorimeter No obvious thermal anomaly was observed for the above-mentioned compounds in the experimental tem-peiatnre ranges.The polynomial equations for calculating the heat capacities of the four compounds in the range of 13-300K were obtained by the least-squares fitting based on the experimental Cp data.The Cp values below 13 K were estimated by using the Debye-Einstem heat capacity functions.The standard molar thermodynamic functions were calculated from 0 to 300 K.Gibbs energies of formation were also calculated.
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