ISSN:
1572-8927
Schlagwort(e):
Nucleic acid bases
;
nucleosides
;
partial molar heat capacity
;
partial molar volume
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
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 p,2 o , (∂C p,2 o /∂T)p, (∂2 C p,2 o ∂T 2)p,V 2 o , (∂V 2 o /∂T)p, and (∂2 V 2 o /∂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 p,2 o (nucleoside)-C p,2 o (base) +C p,2 o (water)=C p,2 o (ribose) does not hold in these cases.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00973047
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