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题名: Crystal Structure, Phase Transition, and Thermodynamic Properties of Bis-dodecylammonium Tetrachlorozincate (C12H25NH3)(2)ZnCl4(s)
作者: Kong Yuxia1;  Di Youying1;  Yang Weiwei1;  Lue Yinfeng1;  Tan Zhicheng2
关键词: (C12H25NH3)(2)ZnCl4 ;  X-ray crystallography ;  lattice energy ;  thermodynamics ;  low-temperature heat capacity ;  phase transition
刊名: CHINESE JOURNAL OF CHEMISTRY
发表日期: 2010-04-01
卷: 28, 期:4, 页:521-530
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The crystal structure and composition of (C12H25NH3)(2)ZnCl4(s) were characterized by chemical and elemental analysis. X-ray powder diffraction technique and X-ray crystallography. The lattice energy of the title compound was calculated to be U-POT=888.82 kJ.mol(-1). Low temperature heat capacities of the title compound have been measured by a precision automated adiabatic calorimeter over the temperature range from 80 to 403 K. An obvious solid to solid phase transition occurred in the heat capacity curve, and the peak temperature, molar enthalpy and molar entropy of the phase transition of the compound were determined to be T-trs=(364.02 +/- 0.03) K, Delta H-trs(m) = (77.567 +/- 0.341) kJ.mol(-1), and Delta S-trs(m)=(213.77 +/- 1.17) J.K-1.mol(-1), respectively. Experimental molar heat capacities before and after the phase transition were respectively fitted to two polynomial equations. The smoothed molar heat capacities and fundamental thermodynamic functions of the sample relative to the standard reference temperature 298.15 K were calculated and tabulated at an interval of 5 K.
关键词[WOS]: THERMAL-ENERGY STORAGE ;  ALKYLAMMONIUM TETRACHLOROMETALLATES(II) ;  SYSTEMS ;  ACID
语种: 英语
WOS记录号: WOS:000277483800005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141752
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:
Kong Yuxia,Di Youying,Yang Weiwei,et al. Crystal Structure, Phase Transition, and Thermodynamic Properties of Bis-dodecylammonium Tetrachlorozincate (C12H25NH3)(2)ZnCl4(s)[J]. CHINESE JOURNAL OF CHEMISTRY,2010,28(4):521-530.
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