ENTHALPIES OF INTERACTION OF ALIPHATIC-KETONES WITH POLAR AND NON-POLAR SOLVENTS

被引：45

作者：

SALUJA, PPS ^{[1
]}

PEACOCK, LA ^{[1
]}

FUCHS, R ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT CHEM,HOUSTON,TX 77044

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1979年 / 101卷 / 08期

关键词：

D O I：

10.1021/ja00502a005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solvation enthalpies [ΔH(v → S)] of a variety of aliphatic ketones including straight-chain, branched, and cyclic compounds have been determined in methanol, dimethylformamide, benzene, and cyclohexane by combining measurements of the heats of solution (ΔHs) and heats of vaporization (ΔHv). Values of A HK have been determined by the gas chromatography-calorimetry method, and several of the calculated liquid heat capacities required by this procedure have been verified by experimental measurement. ΔH(v → S) for most ketones are in the order benzene (most exothermic) > DMF > MeOH > c-C6H12. Comparison of ΔH(v → S) values for ketones with values for hydrocarbons of the same carbon skeleton provides a measure of polar interactions of the ketones with solvents. These interactions are largest for the cyclic and 2-ketones, less for the straight-chain symmetrical ketones, and least for the highly branched 2, 2, 4, 4-tetramethyl-3-pentanonc, and decrease with increasing ketone size within each group. © 1979, American Chemical Society. All rights reserved.

引用

页码：1958 / 1962

页数：5

共 31 条

[11] AROMATIC SUBSTITUENT GROUP ENTHALPIES OF TRANSFER FROM METHANOL TO N,N-DIMETHYLFORMAMIDE [J].