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题名: Low-temperature heat capacity and thermochemical study of [Re-2(Pro)(6)(H2O)(4)](ClO4)(6) (Re = Nd, Gd; Pro = proline) crystals
作者: Li, GT;  Zhang, DS;  Li, L;  Tan, ZC;  Wu, XM;  Meng, SH
关键词: [Re-2(Pro)(6)(H2O)(4)]ClO4)(6) (Re = Nd, Gd, Pro = proline) ;  heat capacity ;  TG analysis ;  combustion energy
刊名: THERMOCHIMICA ACTA
发表日期: 2001-07-20
卷: 375, 期:1-2, 页:125-130
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 heat capacities of two solid complexes of rare-earth compounds with proline [Re-2(Pro)(6)(H2O)(4)](ClO4)(6) (Re = Nd, Gd; Pro = proline. C5H9O2N), were measured with a high-precision automatic adiabatic calorimeter over the temperature range from 78 to 370 K, The heat capacity curves of the two complexes are smooth and similar in magnitude to each other except for a melting transition of [Gd-2(Pro)(6)(H2O)(4)](ClO4)(6) that occurred in the temperature range of 340-346 K with a peak temperature of 342.48 +/- 0.01 K, The molar enthalpy and entropy of fusion of [Gd-2(Pro)(6)(H2O)(4)](ClO4)(6) were determined to be 26.104 +/- 0.031 k J mol(-1) and 76.23 +/- 0.08 J K-1 mol(-1), respectively, on the basis of the heat capacity measurements. Thermal decompositions of the two complexes were studied through the thermogravimetry (TG) experiments and possible mechanisms of the decompositions were suggested according to the TG analysis. The molar combustion energies of the two complexes were determined to he 17010 +/- 1.6 and 15630 +/- 1.5 J mol(-1) For [Nd-2(Pro)(6)(H2O)(4)](ClO4)(6) and [Gd-2(Pro)(6)(H2O)(4)](ClO4)(6), respectively, by means of oxygen-bomb calorimetric measurements. (C) 2001 Elsevier Science B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000169975500011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138903
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, Dalian 116023, Peoples R China
2.Changde Normal Coll, Dept Chem, Changde 415000, Peoples R China
3.Wuhan Univ, Coll Chem & Environm Sci, Wuhan 430072, Peoples R China

Recommended Citation:
Li, GT,Zhang, DS,Li, L,et al. Low-temperature heat capacity and thermochemical study of [Re-2(Pro)(6)(H2O)(4)](ClO4)(6) (Re = Nd, Gd; Pro = proline) crystals[J]. THERMOCHIMICA ACTA,2001,375(1-2):125-130.
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