Abstract Measurements of excess molar enthalpies at the temperature 298.15 K were reported for binary mixtures of DMSO with benzene or isopropyl benzene or 1-hexyne or 2- hexyne or 3-hexyne as well as binary mixtures of sulfolane with benzene or isopropyl benzene or 1-hexyne at the temperature 303.15 K over the whole composition range. In all systems, the excess molar enthalpies are positive, corresponding to the endothermic mixing processes. The excess molar enthalpies data of the mentioned binary systems were used to investigate intermolecular interactions between polar molecules (DMSO and sulfolane) and aliphatic and aromatic hydrocarbons. The results were discussed in terms of the self-association of DMSO and sulfolane, cross-association between the components in the binary mixtures as well as structural effects. Furthermore, the Redlich–Kister polynomial equation, were used to successfully correlate the experimental excess molar enthalpy data for all systems.

中文翻译：

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二甲基亚砜或环丁砜与脂肪族/芳香族烃的过量摩尔焓

摘要 DMSO 与苯或异丙基苯或 1-己炔或 2-己炔或 3-己炔的二元混合物以及环丁砜与苯或异丙苯或 1-己炔在整个组成范围内的温度为 303.15 K。在所有系统中，过量摩尔焓为正值，对应于吸热混合过程。上述二元系统的过量摩尔焓数据用于研究极性分子（DMSO 和环丁砜）与脂肪族和芳香族烃之间的分子间相互作用。结果讨论了 DMSO 和环丁砜的自缔合、二元混合物中组分之间的交叉缔合以及结构效应。此外，