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Heat capacity and thermodynamic properties of crystalline 2-chloro-N,N-dimethylnicotinamide
Sun, XH; Liu, YF; Tan, ZC; Ji, PJ; Wang, MH
KeywordHeat Capacity 2-chloro-n Adiabatic Calorimetry N-dimethylnicotinamide
Source PublicationCHINESE JOURNAL OF CHEMISTRY
2005-11-01
Volume23Issue:11Pages:1490-1494
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
AbstractLow-temperature heat capacities of 2-chloro-NN-dimethylnicotinamide were precisely measured with a high-precision automated adiabatic calorimeter over the temperature range from 82 K to 380 K. The compound was observed to melt at (342.15 +/- 0.04) K. The molar enthalpy Delta(fusion)H(m) and entropy of fusion, Delta(fusion)S(m) as well as the chemical purity of the compound were determined to be (21387 +/- 7) J circle mol(-1), (62.51 +/- 0.01) J circle mol(-1)circle K-1, (0.9946 +/- 0.0005) mass fraction, respectively. The extrapolated melting temperature for the pure compound obtained from fractional melting experiments was (342.25 +/- 0.024) K. The thermodynamic function data relative to the reference temperature 298.15 K were calculated based on the heat capacity measurements in the temperature range from 82 to 325 K. The thermal behavior of the compound was also investigated by different scanning calorimetry.
Language英语
WOS IDWOS:000232999200005
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139632
Collection中国科学院大连化学物理研究所
Affiliation1.NW Univ Xian, Coll Chem Engn, Inst Chem Res, Xian 710069, Shaanxi, Peoples R China
2.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Sun, XH,Liu, YF,Tan, ZC,et al. Heat capacity and thermodynamic properties of crystalline 2-chloro-N,N-dimethylnicotinamide[J]. CHINESE JOURNAL OF CHEMISTRY,2005,23(11):1490-1494.
APA Sun, XH,Liu, YF,Tan, ZC,Ji, PJ,&Wang, MH.(2005).Heat capacity and thermodynamic properties of crystalline 2-chloro-N,N-dimethylnicotinamide.CHINESE JOURNAL OF CHEMISTRY,23(11),1490-1494.
MLA Sun, XH,et al."Heat capacity and thermodynamic properties of crystalline 2-chloro-N,N-dimethylnicotinamide".CHINESE JOURNAL OF CHEMISTRY 23.11(2005):1490-1494.
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