尿嘧啶和5-溴尿嘧啶的低温热容

doi:10.3866/PKU.WHXB201501122

Abstract

Abstract:

The heat capacities of uracil and 5-bromouracil were measured using a quantum design physical property measurement system (PPMS) in the temperature range of 1.9-300 K. The experimental results indicate that the heat capacities of the two compounds increase with increasing temperature, and no thermal anomalies are observed across the whole temperature range studied. The heat capacity values of 5-bromouracil are larger than those of uracil as it has a higher molecular weight but a similar molecular structure. The heat capacities were fitted to theoretical models and the thermodynamic functions were calculated based on the curve fitting. The standardmolecular entropies at 298.15 K were determined to be (132.48±1.32) and (165.39±1.65) J·K^-1·mol^-1 for uracil and 5-bromouracil, respectively.

Key words: Uracil, 5-Bromouracil, Heat capacity, Physical property measurement system, Thermodynamic function

ZHANG Xiao-Ye, XUE Bin, CHENG Ze, TAN Zhi-Cheng, SHI Quan. Low Temperature Heat Capacities of Uracil and 5-Bromouracil[J]. Acta Phys. -Chim. Sin. 2015, 31(3), 412-418. doi: 10.3866/PKU.WHXB201501122

References

(1) Bai, S. Z.; Lou, X. H.; Yin, G. L. Shan Xi Chem. Indus. 2009, 29, 16. [白素贞, 娄新华, 尹桂玲. 山西化工, 2009, 29, 16.]
(2) Fang,W. Fine. Spec. Chem. 2008, 16, 15. [方巍. 精细与专用化学品, 2008, 16, 15.]
(3) Mei, Q. B.;Weng, J. N.; Tong, B. H.; Tian, R. Q.; Jiang, Y. Z.; Hua, Q. F.; Huang,W. Acta Phys. -Chim. Sin. 2014, 30 (4), 589. [梅群波, 翁洁娜, 童碧海, 田汝强, 蒋渊知, 华庆芳, 黄维. 物理化学学报, 2014, 30 (4), 589.] doi: 10.3866/PKU.WHXB201402182
(4) Cao, G. J.; Zheng,W. J. Acta Phys. -Chim. Sin. 2013, 29 (10), 2135. [曹国进, 郑卫军. 物理化学学报, 2013, 29 (10), 2135.] doi: 10.3866/PKU.WHXB201308011
(5) Palafox, M. A.; Tardajos, G.; Guerrero, A. M.; Rastogi, V. K.; Mishra, S. P.; Ojha,W. Kiefer. Chem. Phys. 2007, 340, 17.
(6) Alcolea, P. M.; Tardajos, G.; Guerrero, M. A.; Vats, J. K.; Hubert, J.; Rastogi, V. K. Spectrochim. Acta A 2010, 75, 1262.
(7) Miszczak, Z. E.;Wozniak, K. Zeitschrift Fur Naturforschung Section C-A Journal Of Biosciences 1997, 52, 670.
(8) Coats, E.; Glave,W. R.; Hansch, C. J. Med. Chem. 1970, 13, 913. doi: 10.1021/jm00299a027
(9) Lai, G. Y.; Kong, J.;Wang, Q. Y.; Zhang, T. S.; Luo, K.; Huang, X. Q. J. Fish. Sci. China 2008, 15, 860. [赖光艳, 孔杰, 王清印, 张天时, 罗坤, 黄雪芹. 中国水产科学. 2008, 15, 860.]
(10) Feng, Y.; Rainteau, D.; Chachaty, C.; Yu, Z.W.;Wolf, C.; Quinn, P. J. Biophysical Journal 2004, 86 (4), 2208. doi: 10.1016/S0006-3495(04)74279-4
(11) Zielenkiewicz, A.; Desgranges, G. R.; Roux, A. H.; Grolier, J. P. E.;Wierzchowski, K. L.; Zielenkiewicz,W. J. Sol. Chem. 1993, 22, 907. doi: 10.1007/BF00646602
(12) Zielenkiewicz,W.; Kozbial, M.; Swierzewski, R.; Szterner, P. J. Chem. Eng. 2007, 52, 93.
(13) Chickos, J. S.; Acree,W. E. J. Phys. Chem. Ref. 2002, 31, 537.
(14) Shi, Q.; Snow, C. L.; Boerio-Goates, J.;Woodfield, B. F. J. Chem. Thermodyn. 2010, 42, 1107. doi: 10.1016/j.jct.2010.04.008
(15) Shi, Q.; Boerio-Goates, J.;Woodfield, B. F. J. Chem. Thermodyn. 2011, 43, 1263. doi: 10.1016/j.jct.2011.03.018
(16) Shi, Q.; Zhang, L. Y.; Schlesinger, M. E.; Boerio-Goates, J.; Woodfield, B. F. J. Chem. Thermodyn. 2013, 61, 51. doi: 10.1016/j.jct.2013.02.001
(17) Gopal, E. S. R. Specific Heats at Low Temperatures; Plenum Press: New York, 1966; pp 20-111.
(18) Shi, Q.; Zhang, L. Y.; Schlesinger, M. E.; Boerio-Goates, J.; Woodfield, B. F. J. Chem. Thermodyn. 2013, 62, 86. doi: 10.1016/j.jct.2013.02.023
(19) Shi, Q.; Park, T. J.; Schliesser, J.; Navrotsky, A.;Woodfield, B. F. J. Chem. Thermodyn. 2014, 72, 77. doi: 10.1016/j.jct.2014.01.021
(20) Ma, C. C.; Shi, Q.; Brian, F.W.; Navrotsky, A. J. Chem. Thermodyn. 2013, 60, 191. doi: 10.1016/j.jct.2013.01.004
(21) Phillips, N. E.; Rev, C. Solid State Sci. 1971, 2, 467.
(22) Woodfield, B. F.; Shapiro, J. L.; Stevens, R.; Boerio-Goates, J.; Putnam, R. L.; Helean, K. B.; Navrotsky, A. J. Chem. Thermodyn. 1999, 31, 1573. doi: 10.1006/jcht.1999.0556
(23) Woodfield, B. F.; Boerio-Goates, J.; Shapiro, J. L.; Putnam, R. L.; Navrotsky, A. J. Chem. Thermodyn. 1999, 31, 245. doi: 10.1006/jcht.1998.0447
(24) Ribeiro da Silva, M. A. V.; Ribeiro da Silva, M. D. M. C.; Lobo Ferreira, A. I. M. C.; Shi, Q.;Woodfield, B. F.; Goldberg, R. N. G. J. Chem. Thermodyn. 2013, 58, 22.
(25) Lashley, J. C.; Hundley, M. F.; Migliori, A.; Sarrao, J. L.; Pagliuso, P. G.; Darling, T.W.; Jaime, M.; Cooley, J. C.; Hults, W. L.; Morales, L.; Thoma, D. J.; Smith, J. L.; Boerio-Goates, J.;Woodfield, B. F.; Stewart, G. R.; Fisher, R. A.; Phillips, N. E. Cryogenics 2003, 43 (6), 369. doi: 10.1016/S0011-2275(03)00092-4

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Low Temperature Heat Capacities of Uracil and 5-Bromouracil

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