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题名: Calorimetric study and thermal analysis of [Gd4/3Y2/3(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O and [ErY(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O (Gly : glycin)
作者: Liu, BP;  Tan, ZC;  Lan, XZ;  Yu, HG;  Zhang, DS;  Sun, LX
关键词: heat capacity ;  thermal decomposition ;  adiabatic calorimeter ;  TG analysis
刊名: THERMOCHIMICA ACTA
发表日期: 2003-05-19
DOI: 10.1016/S0040-6031(02)00570-1
卷: 401, 期:2, 页:233-238
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: Two solid-state coordination compounds of rare earth metals with glycin, [Gd4/3Y2/3(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O and [ErY(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O were synthesized. The low-temperature heat capacities of the two coordination compounds, were measured with an adiabatic calorimeter over the temperature range from 78 to 376 K. [Gd4/3Y2/3(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O melted at 342.90 K, while [ErY(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O melted at 328.79 K. The molar enthalpy and entropy of fusion for the two coordination compounds were determined to be 18.48 kJ mol(-1) and 53.9 J K-1 mol(-1) for [Gd4/3Y2/3(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O, 1.82 kJ mol(-1) and 5.5 J K-1 mol(-1) for [ErY(Gly)(6)(H2O)(4)](ClO4)(6)(.)5H(2)O, respectively. Thermal decompositions of the two coordination compounds were studied through the thermogravimetry (TG). Possible mechanisms of the decompositions are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
关键词[WOS]: HEAT-CAPACITY ;  SMALL SAMPLES
语种: 英语
WOS记录号: WOS:000183007300017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138399
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.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.Changde Normal Coll, Dept Chem, Changde 415000, Peoples R China

Recommended Citation:
Liu, BP,Tan, ZC,Lan, XZ,et al. Calorimetric study and thermal analysis of [Gd4/3Y2/3(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O and [ErY(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O (Gly : glycin)[J]. THERMOCHIMICA ACTA,2003,401(2):233-238.
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