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题名: Low-temperature heat capacities and thermodynamic properties of ethylenediammonium tetrachlorozincate chloride (C2H10N2)(2)(ZnCl4)Cl-2
作者: He, Dong-Hua1;  Di, You-Ying1;  Wang, Bin1;  Dan, Wen-Yan1;  Tan, Zhi-Cheng2
关键词: Ethylenediammonium tetrachlorozincate chloride ;  X-ray crystallography ;  Low-temperature heat capacity ;  Isoperibol solution-reaction calorimetry ;  Standard molar enthalpy of formation
刊名: THERMOCHIMICA ACTA
发表日期: 2010-07-10
DOI: 10.1016/j.tca.2010.04.012
卷: 506, 期:1-2, 页:41-46
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The ethylenediammonium tetrachlorozincate chloride (C2H10N2)(2)(ZnCl4)Cl-2 was synthesized. Chemical analysis, elemental analysis, and X-ray crystallography were applied to characterize the composition and crystal structure of the complex. Low-temperature heat capacities of the compound were measured by a precision automatic adiabatic calorimeter over the temperature range from T=77-377 K. A polynomial equation of heat capacities as a function of the reduced temperature was fitted by a least square method. Based on the Polynomial equation, the smoothed heat capacities and thermodynamic functions of the title compound relative to the standard reference temperature 298.15 K were calculated at intervals of 5K. A thermochemical cycle was designed and the enthalpy change of the solid phase reaction of ethylenediamine dihydrochloride with zinc chloride was determined to be Delta H-r(m)degrees = -(17.9 +/- 0.6) kJ mol(-1) by an isoperibol solution-reaction calorimeter. Finally, the standard molar enthalpy of formation of the title compound was derived to be Delta H-f(m)degrees[(C2H10N2)(2)(ZnCl4)Cl-2 center dot s] = -(1514.4 +/- 2.7) kJ mol(-1) in accordance with Hess law. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: MAGNETIC-PROPERTIES ;  ENTHALPY ;  CRYSTAL
语种: 英语
WOS记录号: WOS:000280280200007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141929
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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, Liaoning, Peoples R China

Recommended Citation:
He, Dong-Hua,Di, You-Ying,Wang, Bin,et al. Low-temperature heat capacities and thermodynamic properties of ethylenediammonium tetrachlorozincate chloride (C2H10N2)(2)(ZnCl4)Cl-2[J]. THERMOCHIMICA ACTA,2010,506(1-2):41-46.
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