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题名: Heat capacities and thermodynamic properties of (-)-2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis (diphenylphosphino) butane [(-)-DIOP]
作者: Wu, XM;  Tan, ZC;  Yong, JS;  Meng, SH;  Qu, SS
关键词: DIOP ;  heat capacity ;  phase transition ;  enthalpy of fusion ;  purity determination
刊名: THERMOCHIMICA ACTA
发表日期: 2000-03-29
卷: 346, 期:1-2, 页:57-62
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: Heat capacities of (-)-DIOP have been measured with a precision automatic adiabatic calorimeter in the temperature range from 78 to 380 K. A solid-solid phase transition for the compound was observed at 338.65 K and the molar enthalpy and entropy of the transition were determined to be 3.415 kJ mol(-1) and 9.795 J mol(-1), respectively. A solid-liquid phase transition was found at 364.23 K and the molar enthalpy and entropy of fusion were determined to be 38.606 kJ mol(-1) and 106.0 J K-1 mol(-1) respectively. The purity of the sample under investigation was determined to be 0.9837 molar fraction by the fractional melting method. (C) 2000 Elsevier Science B.V. All rights reserved.
关键词[WOS]: ASYMMETRIC HYDROGENATION ;  COMPLEXES
语种: 英语
WOS记录号: WOS:000086004900008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138798
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.Wuhan Univ, Chem Coll, Wuhan 430072, Peoples R China

Recommended Citation:
Wu, XM,Tan, ZC,Yong, JS,et al. Heat capacities and thermodynamic properties of (-)-2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis (diphenylphosphino) butane [(-)-DIOP][J]. THERMOCHIMICA ACTA,2000,346(1-2):57-62.
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