High-resolution heat capacity of SnCl2·2H2O single crystal |
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Authors: | Takasuke Matsuo Masami Tatsumi Hiroshi Suga Syûzô Seki |
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Institution: | Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka, Japan |
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Abstract: | The heat capacity of SnCl2·2H2O single crystal was measured in the close vicinity of the phase transition temperature, Tc = 217.994 ± 0.01 K. Its anomalous part ΔC could be expressed as ΔC = A± ⊥ (T ? Tc)/Tc⊥-α±, where α+ = 0.492 ± 0.02, α- = 0.492 ± 0.02, A+ = 1.148 JK?mol?, and A- = 1.155 JK?mol?. A quasi-isothermal absorption of the enthalpy amounting to 34 J mol? was observed at Tc. |
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