Calorimetric studies on two halogenated uracil isomers | |
Zou, Guanglong1,2; Cheng, Ze1; Zhang, Shihui1; Tan, Zhicheng1; Zhang, Jian1; Shi, Quan1 | |
刊名 | THERMOCHIMICA ACTA
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2016-06-20 | |
卷号 | 634页码:6-11 |
关键词 | Chlorouracil Isomers Low-temperature Heat Capacity Physical Property Measurement System Standard Thermodynamic Functions |
ISSN号 | 0040-6031 |
DOI | 10.1016/j.tca.2016.04.013 |
文献子类 | Article |
英文摘要 | The heat capacities of 6-chlorouracil and 5-chlorouracil isomers were measured using a Quantum Design physical properties measurement system (PPMS) based on a heat pulse relaxation method over the temperature range from (1.9 to 300) K, and the experimental data were fitted as a function of temperature using a series of theoretical and empirical models for the appropriate temperature ranges. The results of these fits were used to calculate thermodynamic function values, C-P,m(0), Delta S-T(0)m(o), and Delta H-T(0)m(o), from T= (0.5 to 300) K. The standard molar heat capacities, entropies and enthalpies of 6-chlorouracil and 5-chlorouracil at 298.15 K and 0.1 MPa were determined to be C-p,m(o) = (136.94 +/- 1.37) J K-1 mol(-1) and (137.95 +/- 1.38) J K-1 mol(-1), S-m(o), = (156.87 +/- 1.57) J K-1 mol(-1) and (154.97 +/- 1.55) J K-1 mol(-1) and H-m(o) = (23.01 +/- 0.23) kJ mol(-1) and (23.07 +/- 0.23) kJ mol(-1), respectively. (C) 2016 Elsevier B.V. All rights reserved. |
WOS关键词 | HEAT-CAPACITY MEASUREMENTS ; FT-RAMAN SPECTRA ; THYMIDINE PHOSPHORYLASE ; THERMODYNAMIC FUNCTIONS ; 5-CHLOROURACIL ; DERIVATIVES ; INHIBITORS ; IR |
WOS研究方向 | Thermodynamics ; Chemistry |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000376839800002 |
内容类型 | 期刊论文 |
源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170984] ![]() |
专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
通讯作者 | Shi, Quan |
作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Thermochem Lab,Liaoning Prov Key Lab Thermochem E, Dalian 116023, Peoples R China 2.Guizhou Minzu Univ, Sch Chem & Environm Sci, Guiyang 550025, Peoples R China |
推荐引用方式 GB/T 7714 | Zou, Guanglong,Cheng, Ze,Zhang, Shihui,et al. Calorimetric studies on two halogenated uracil isomers[J]. THERMOCHIMICA ACTA,2016,634:6-11. |
APA | Zou, Guanglong,Cheng, Ze,Zhang, Shihui,Tan, Zhicheng,Zhang, Jian,&Shi, Quan.(2016).Calorimetric studies on two halogenated uracil isomers.THERMOCHIMICA ACTA,634,6-11. |
MLA | Zou, Guanglong,et al."Calorimetric studies on two halogenated uracil isomers".THERMOCHIMICA ACTA 634(2016):6-11. |
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