Calorimetric studies on two halogenated uracil isomers

doi:10.1016/j.tca.2016.04.013

	Calorimetric studies on two halogenated uracil isomers
	Zou, Guanglong 1,2; Cheng, Ze 1; Zhang, Shihui 1; Tan, Zhicheng 1; Zhang, Jian 1; Shi, Quan 1
刊名	THERMOCHIMICA ACTA
	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.