An improvement in the theory of regular solutions.
An improvement in the theory of regular solutions.
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正则解理论的改进。
DOI：
10.1073/pnas.76.12.6040
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发表时间：
1979
影响因子：
11.1
通讯作者：
J. Hildebrand
中科院分区：
文献类型：
--
作者：
J. Hildebrand
在构建规则的非极性二元溶液的理论时，混合的偏摩尔能由“溶解度参数”之间的差的平方表示，通常由每立方厘米蒸发的摩尔能（Δ E（v）/V）（1/2）= Δ，在约25 ℃下评估。然而，我们已经发现，分子中含有甲基的液体不符合这些参数;为了说明它们对碘的溶解能力，需要与每个分子中甲基数量成比例增加的参数。这种异常现象可能是由于没有能够在相邻分子之间施加伦敦吸引力的外部非键电子。碘在含甲基液体和含氟化合物中的溶解度参数大大提高了规则溶液理论的预测能力。
In constructing the theory of regular, nonpolar, binary solutions, the partial molal energy of mixing has been expressed by the square of difference between "solubility parameters," usually evaluated by the molal energy of vaporization per cubic centimeter, (DeltaE(v)/V)(1/2) = delta, at approximately 25 degrees C. We have found, however, that liquids whose molecules contain methyl groups do not conform to these parameters; to account for their solvent power for iodine requires parameters increased in proportion to the number of methyl groups per molecule. The anomaly may be attributed to the absence of outer nonbonded electrons able to exert London attractive force between neighboring molecules. Parameters derived from solubility for iodine in both methyl-containing liquids and fluorochemicals greatly improve the predictive power of the theory of regular solutions.