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Low-temperature heat capacity and enthalpy of formation of [Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O
Li, Wei; Wu, Xinmin; Tan, Zhicheng; Qu, Songsheng
刊名JOURNAL OF CHEMICAL AND ENGINEERING DATA
2007-07-01
DOI10.1021/je060405k
52期:4页:1182-1185
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
英文摘要A crystalline complex of erbium perchlorate coordinated with glycine, [Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O, has been synthesized. No melting point is observed above room temperature. The heat capacity of the complex was measured by adiabatic calorimetry from 79 K to 369 K, and two peaks centered at 233 K and 325 K were found. The first peak centered at 233 K was a phase transformation peak, and the second was decomposition. The temperature, enthalpy change, and entropy change of the phase transformation were 219.47 K, 17.51 kJ center dot mol(-1), and 79.77 J center dot K-1 center dot mol(-1), and those of the decomposition process were 312.576 K, 94.86 kJ center dot mol(-1), and 303.49 J center dot K-1 center dot mol(-1). The polynomial equations of heat capacity in different temperature ranges, 79.091 K to 217.424 K and 255.606 K to 306.143 K, have been obtained by least-squares fitting. The standard enthalpy of formation was determined to be Delta H-f(m)theta ([Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O, s, 298.15 K) = -7911.13 +/- 2.77 kJ center dot mol(-1) by isoperibol reaction calorimetry.
语种英语
WOS记录号WOS:000247966800006
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140419
专题中国科学院大连化学物理研究所
作者单位1.Beijing Inst Petrochem Technol, Dept Chem Engn, Beijing 102617, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
3.Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
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Li, Wei,Wu, Xinmin,Tan, Zhicheng,et al. Low-temperature heat capacity and enthalpy of formation of [Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2007,52(4):1182-1185.
APA Li, Wei,Wu, Xinmin,Tan, Zhicheng,&Qu, Songsheng.(2007).Low-temperature heat capacity and enthalpy of formation of [Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O.JOURNAL OF CHEMICAL AND ENGINEERING DATA,52(4),1182-1185.
MLA Li, Wei,et al."Low-temperature heat capacity and enthalpy of formation of [Er-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O".JOURNAL OF CHEMICAL AND ENGINEERING DATA 52.4(2007):1182-1185.
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