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Low-Temperature Heat Capacities and Thermochemistry on the Complex of Samarium Perchlorate with L-alpha-Valine Acid: [Sm-2(L-alpha-Val)(4)(H2O)(8)](ClO4)(6)
Yang Wei-Wei1; Di You-Ying1; Kong Yu-Xia1; Tan Zhi-Cheng2
KeywordComplex Of Samarium Perchlorate With L-alpha-valine Acid Adiabatic Calorimetry Low-temperature Heat Capacity Isoperibol Solution-reaction Calorimetry Standard Molar Enthalpy Of Formation
Source PublicationCHINESE JOURNAL OF INORGANIC CHEMISTRY
2010-07-10
Volume26Issue:7Pages:1252-1258
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Inorganic & Nuclear
WOS Research AreaChemistry
WOS KeywordNICOTINATE
AbstractA complex of samrium perchlorate with L-alpha-Valine acid, [Sm-2(L-alpha-Val)(4)(H2O)(8)](ClO4)(6), was synthesized by the reaction of samarium perchlorate and L-alpha-Valine acid in distilled water. The title complex was characterized by chemical analysis, elemental analysis, FTIR and TG/DTG. Low-temperature heat capacities were measured by a precision automated adiabatic calorimeter over the temperature range from 78 to 371 K. A polynomial equation of heat capacities as a function of the temperature was fitted by the least-squares method. Based on the fitted polynomial, the smoothed heat capacities and thermodynamic functions of the complex relative to the standard reference temperature 298.15 K were calculated with the interval of 5 K. The possible mechanism about thermal decomposition of the complex was deduced on the basis of the TG/DTG analysis. A reasonable thermochemical cycle was designed on the basis of the Hess law, and the standard molar enthalpies of dissolution for the reactants and products of the designed reaction in the selected solvents were measured by an isoperibol solutionreaction calorimeter, respectively. In addition, the enthalpy change of the reaction was determined to be Delta H-r(m)circle minus = (24.83 +/- 0.85) kJ.mol(-1) from the data of the above standard molar enthalpies of dissolution. Eventually, the standard molar enthalpy of formation of the complex was derived to be -(8 010.01 +/- 3.90) kJ.mol(-1) by the combination of the enthalpy change of the reaction with other auxiliary thermodynamic quantities.
Language英语
WOS IDWOS:000280183900021
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141897
Collection中国科学院大连化学物理研究所
Affiliation1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Yang Wei-Wei,Di You-Ying,Kong Yu-Xia,et al. Low-Temperature Heat Capacities and Thermochemistry on the Complex of Samarium Perchlorate with L-alpha-Valine Acid: [Sm-2(L-alpha-Val)(4)(H2O)(8)](ClO4)(6)[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2010,26(7):1252-1258.
APA Yang Wei-Wei,Di You-Ying,Kong Yu-Xia,&Tan Zhi-Cheng.(2010).Low-Temperature Heat Capacities and Thermochemistry on the Complex of Samarium Perchlorate with L-alpha-Valine Acid: [Sm-2(L-alpha-Val)(4)(H2O)(8)](ClO4)(6).CHINESE JOURNAL OF INORGANIC CHEMISTRY,26(7),1252-1258.
MLA Yang Wei-Wei,et al."Low-Temperature Heat Capacities and Thermochemistry on the Complex of Samarium Perchlorate with L-alpha-Valine Acid: [Sm-2(L-alpha-Val)(4)(H2O)(8)](ClO4)(6)".CHINESE JOURNAL OF INORGANIC CHEMISTRY 26.7(2010):1252-1258.
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