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Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Ethylenediammonium Tetrachlorocobaltate(II) Chloride (H3NCH2CH2NH3)(2)[CoCl4]Cl-2(s)
Dan, Wen-Yan1; Di, You-Ying1; Xin, Chun-Ling1; Kong, Yu-Xia1; Tan, Zhi-Cheng2
刊名JOURNAL OF CHEMICAL AND ENGINEERING DATA
2010-09-01
DOI10.1021/je901051z
55期:9页:3010-3016
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]CRYSTAL
英文摘要A coordination compound, ethylenediammonium tetrachlorocobaltate(II) chloride (H3NCH2CH2NH3)(2)[CoCl4]Cl-2, was synthesized by the method of liquid phase synthesis, in which ethylenediamine, cobalt chloride hexahydrate, and concentrated hydrochloric acid 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 complex were measured with a precise automated adiabatic calorimeter over the temperature range from (78 to 370) 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 of 298.15 K were calculated and tabulated at intervals of 5 K based on the fitted polynomial equation. A reasonable thermochemical cycle was designed, and the standard molar enthalpies of dissolution of the reactants and products of the synthesis reaction in the selected solvent were measured by an isoperibol solution-reaction calorimeter. The enthalpy change of the reaction was calculated to be Delta H-r(m)o = (17.612 +/- 0.571) kJ.mol(-1) from the data of the standard molar enthalpies of dissolution. The standard molar enthalpy of formation of the title compund was determined to be Delta H-f(m)o {(NH3CH2CH2NH3)(2)[CoCl4]Cl-2, s} = (1499.54 +/- 2.73) kJ.mol(-1) in accordance with Hess's law.
语种英语
WOS记录号WOS:000281567000011
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141916
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,Xin, Chun-Ling,et al. Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Ethylenediammonium Tetrachlorocobaltate(II) Chloride (H3NCH2CH2NH3)(2)[CoCl4]Cl-2(s)[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2010,55(9):3010-3016.
APA Dan, Wen-Yan,Di, You-Ying,Xin, Chun-Ling,Kong, Yu-Xia,&Tan, Zhi-Cheng.(2010).Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Ethylenediammonium Tetrachlorocobaltate(II) Chloride (H3NCH2CH2NH3)(2)[CoCl4]Cl-2(s).JOURNAL OF CHEMICAL AND ENGINEERING DATA,55(9),3010-3016.
MLA Dan, Wen-Yan,et al."Low-Temperature Heat Capacities and Standard Molar Enthalpy of Formation of Ethylenediammonium Tetrachlorocobaltate(II) Chloride (H3NCH2CH2NH3)(2)[CoCl4]Cl-2(s)".JOURNAL OF CHEMICAL AND ENGINEERING DATA 55.9(2010):3010-3016.
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