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题名: Low-temperature heat capacity and standard enthalpy of formation of samarium glycine perchlorate complex [Sm-2(Gly)(6)(H2O)(4)] (ClO4)(6)center dot 5H(2)O
作者: Wu, XM;  Liu, Y;  Li, L;  Liu, P;  Gao, XY;  Tan, ZC;  Qu, SS
关键词: rare earth salt ;  glycine ;  [Sm-2(Gly)(6)(H2O)(4)(ClO4)(6)center dot 5H(2)O ;  standard enthalpy of formation ;  low-temperature heat capacity
刊名: ACTA CHIMICA SINICA
发表日期: 2001
卷: 59, 期:9, 页:1396-1400
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: Rare - earth perchlorate - glycine complex (Sm-2 (Gly)(6) (H2O)(4)] (ClO4)(6) . 5H(2)O was synthesized and obtained as single crystals. By using TG, DTA and chemical analytic method, and comparing with relavent literature, its single crystal structure was established. The purity was found to be 99.0%, with no distinct melting point. Heat capacity measurement of this compound was carried out on a high - precise fully automated adiabatic calorimeter over the temperature range from 79 to 370 K. No obvious thermal anomaly was observed. Thermal decomposition temperature range of this compound is near 348.07 K, its decomposition temperature, decomposition enthalpy and entropy are 346.89 K, 44.669 kJ/mol and 128.77 J/K . mol, respectively. The polynomial equation of heat capacity of this compound has be fitted as : C-p = 1294.56 + 624.17X - 11.893 X-2 +75.075 X-3 + 23.762X(4) in the temperature range of 79 similar to 318 K. The standard enthalpy of formation was measured to be - 8022.405 kJ/mol with isoperable reaction calorimeter at 298.15 K.
关键词[WOS]: THERMODYNAMIC PROPERTIES
语种: 英语
WOS记录号: WOS:000171446500010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138944
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.Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
3.Changde Teachers Coll, Dept Chem, Changde 415000, Peoples R China

Recommended Citation:
Wu, XM,Liu, Y,Li, L,et al. Low-temperature heat capacity and standard enthalpy of formation of samarium glycine perchlorate complex [Sm-2(Gly)(6)(H2O)(4)] (ClO4)(6)center dot 5H(2)O[J]. ACTA CHIMICA SINICA,2001,59(9):1396-1400.
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