Abstract
Specific heat capacities, apparent molar heat capacities, densities, and apparent molar volumes have been determined for cytosine, uracil, thymine, adenine, cytidine, 2′-deoxycytidine, uridine, thymidine and adenosine at temperatures from 25°C to 55°C. The results of these measurements have been used to calculate for the first time, the thermodynamic quantities:C op,2 , (∂C op,2 /∂T)p, (∂2 C op,2 ∂T 2)p,V o2 , (∂V o2 /∂T)p, and (∂2 V o2 /∂T 2)p. The-CH2-group contribution has been calculated at different temperatures. It has also been observed from the data for the nucleic acid bases and nucleosides that the additivity ruleC op,2 (nucleoside)-C op,2 (base) +C op,2 (water)=C op,2 (ribose) does not hold in these cases.
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Patel, S.G., Kishore, N. Thermodynamics of nucleic acid bases and nucleosides in water from 25 to 55°C. J Solution Chem 24, 25–38 (1995). https://doi.org/10.1007/BF00973047
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DOI: https://doi.org/10.1007/BF00973047