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Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Dichloro Bis(2-aminopyridine) Zinc (II), ZnCl2(C5H6N2)(2)(s)
Dan, Wen-Yan1; Di, You-Ying1; Liu, Yan-Juan1; Kong, Yu-Xia1; Tan, Zhi-Cheng2
关键词Dichloro Bis(2-aminopyridine) Zinc (Ii) Low-temperature Heat Capacity Standard Molar Enthalpy Of Dissolution Standard Molar Enthalpy Of Formation Thermodynamic Function X-ray Crystallography
刊名INTERNATIONAL JOURNAL OF THERMOPHYSICS
2010-12-01
DOI10.1007/s10765-010-0887-5
31期:11-12页:2103-2118
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Thermodynamics ; Chemistry, Physical ; Mechanics ; Physics, Applied
研究领域[WOS]Thermodynamics ; Chemistry ; Mechanics ; Physics
关键词[WOS]COORDINATION-COMPOUND
英文摘要Dichloro bis(2-aminopyridine) zinc (II), ZnCl2(C5H6N2)(2)(s), was synthesized by the method of solvonthermal synthesis in which 2-aminopyridine and zinc chloride were chosen as the reactants. X-ray crystallography, chemical analysis, and elemental analysis were applied to characterize the structure and composition of the complex. Low-temperature heat capacities of the title compound were measured with a precise small-sample automated adiabatic calorimeter over the temperature range from 78 K to 398 K. A polynomial equation of the heat capacities as a function of temperature was fitted by a least-squares method. Smoothed heat capacities and thermodynamic functions of the compound relative to the standard reference temperature (298.15 K) were calculated and tabulated at intervals of 5 K based on the fitted polynomial. A reasonable thermochemical cycle was designed, and the standard molar enthalpies of dissolution for the reactants and products of the synthesis reaction in a selected solvent were measured by an isoperibol solution-reaction calorimeter. In addition, the enthalpy change of the reaction was calculated from the data of the above standard molar enthalpies of dissolution. Finally, the standard molar enthalpy of formation of the complex ZnCl2(C5H6N2)(2)(s) was determined to be -(400.52 +/- 1.66) kJ center dot mol(-1) in accordance with Hess's law.
语种英语
WOS记录号WOS:000285065300005
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141831
专题中国科学院大连化学物理研究所
作者单位1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
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Dan, Wen-Yan,Di, You-Ying,Liu, Yan-Juan,et al. Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Dichloro Bis(2-aminopyridine) Zinc (II), ZnCl2(C5H6N2)(2)(s)[J]. INTERNATIONAL JOURNAL OF THERMOPHYSICS,2010,31(11-12):2103-2118.
APA Dan, Wen-Yan,Di, You-Ying,Liu, Yan-Juan,Kong, Yu-Xia,&Tan, Zhi-Cheng.(2010).Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Dichloro Bis(2-aminopyridine) Zinc (II), ZnCl2(C5H6N2)(2)(s).INTERNATIONAL JOURNAL OF THERMOPHYSICS,31(11-12),2103-2118.
MLA Dan, Wen-Yan,et al."Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Dichloro Bis(2-aminopyridine) Zinc (II), ZnCl2(C5H6N2)(2)(s)".INTERNATIONAL JOURNAL OF THERMOPHYSICS 31.11-12(2010):2103-2118.
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