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Free Content Low-Temperature Heat Capacities and Thermochemistry Properties of Sm(Val)Cl3·6H2O

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Heat capacities of the complex of rare-earth element with valine [Sm(Val)Cl3·6H2O] were measured with a high-precision automatic adiabatic calorimeter over the temperature range from 80 to 376 K, and the thermodynamic unctions (HT-H298.15 and ST-S298.15) were calculated. A large step in heat capacity was detected around 308Kand this may be attributed to a glass transition corresponding to freezing of structural disorder. Thermal decomposition of this complex as studied by thermogravimetric (TG) technique and a possible mechanism for the decomposition was suggested.
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Keywords: Low-temperature heat capacity; Rare-earth complex; Sm(Val)Cl3·6H2O; TG analysis; Thermodynamic functions

Document Type: Research Article

Publication date: 15 August 2008

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  • Acta Physico-Chimica Sinica, founded in 1985, is sponsored by the Chinese Chemical Society and organized by the College of Chemistry and Molecular Engineering, PekingUniversity. Since 1997, Acta Physico-Chimica Sinica has been indexed in SCI of ISI (US). Acta Physico-Chimica Sinica is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and material physical chemists. Manuscripts that are essentially reporting data, applications of data, or reviews of the literature are not suitable for publication in Acta Physico-Chimica Sinica.
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