APPARENT MOLAR HEAT-CAPACITIES AND VOLUMES, VAN-DER-WAALS VOLUMES AND ACCESSIBLE SURFACE-AREAS OF ALKYLATED DERIVATIVES OF CYTOSINE AND URACIL IN AQUEOUS-SOLUTIONS AT 25-DEGREES-C

被引：18

作者：

ZIELENKIEWICZ, A

ROUXDESGRANGES, G

ROUX, AH

GROLIER, JPE

WIERZCHOWSKI, KL

ZIELENKIEWICZ, W

机构：

[1] POLISH ACAD SCI,INST PHYS CHEM,KASPRZAKA 44-52,PL-01224 WARSAW,POLAND

[2] UNIV CLERMONT FERRAND,CNRS,URA 434,THERMODYNAM & CINET CHIM LAB,F-63177 CLERMONT FERRAND,FRANCE

[3] POLISH ACAD SCI,INST BIOCHEM & BIOPHYS,PL-02532 WARSAW,POLAND

来源：

JOURNAL OF SOLUTION CHEMISTRY | 1993年 / 22卷 / 10期

关键词：

NUCLEIC ACID BASES; URACIL; CYTOSINE; APPARENT MOLAR HEAT CAPACITIES; APPARENT MOLAR VOLUMES; VAN-DER-WAALS VOLUMES-ACCESSIBLE SURFACE AREAS;

D O I：

10.1007/BF00646602

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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-degrees-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.

引用

页码：907 / 918

页数：12