ISSN:
1572-8927
Keywords:
Nucleic acid bases
;
uracil
;
cytosine
;
apparent molar heat capacities
;
apparent molar volumes
;
van der Waals volumes
;
accessible surface areas
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Densities and specific heat capacities of aqueous solutions: 1,3,5,6-tetramethyluracil, 1,6-dimethyl-3-ethyluracil, 1,6-dimethyl-3-propyluracil, 1,6-dimethyl-3-butyluracil, 1,N4-trimethylcytosine, 1,N4-dimethyl-5-ethylcytosine, 1,N4 dimethyl-5-propylcytosine, 1,N4-dimethyl-5-butylcytosine were determined using flow calorimetry and flow densimetry at 25°C. Apparent molar volumes and heat capacities, van der Waals volumes and accessible surface areas were determined. It was stated that for alkylcytosines and alkyluracils partial molar volumes and heat capacities correlate linearly with the number of substituted methylene groups-CH2-as well as with the van der Waals volumes and accessible surface areas of the compounds studied; for cyclooligouracils the cyclization effect was discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00646602
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