期刊
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷 87, 期 7, 页码 1076-1078出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024413070182
关键词
methanol-acetonitrile solvents; calorimetry of dissolution; 18-crown-6 ether; solvation; enthalpy
资金
- program Scientists and Science Teachers of Innovative Russia [14.B37.21.0801]
Heat effects of the dissolution of 18-crown-6 ether (18C6) over a wide range of compositions of mixed methanol-acetonitrile solvents are determined via calorimetry at 298.15 K. It is found that passing from methanol to acetonitrile to x (AN) = 0.6 mole fraction is accompanied by a sharp increase in the exothermicity of 18C6 solvation. It is concluded that a further increase in the aprotic component of a binary mixture leads to no appreciable changes in the enthalpy of solvation of the macrocycle.
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