An approach for the calculation of the vaporization enthalpies of aromatic and heteroaromatic compounds at T = 298.15 K with accuracy competitive with experiment was proposed. The vaporization enthalpies may be calculated from the solution enthalpies of liquid and solvation enthalpies in benzene. The solution enthalpies of liquids were shown to be constant within a given type of aromatic compounds. For a set of 67 liquid and 41 solid aromatic and heteroaromatic compounds not capable of intermolecular hydrogen bonding, it was experimentally demonstrated that the solution enthalpies of liquids or supercooled liquids in benzene were equal to 1 ± 1 kJ·mol⁻¹. The way to consider intermolecular hydrogen bonding, e.g., in phenol, aniline, pyrrole derivatives, was also proposed. The methods for solvation enthalpy calculation were proposed previously.

The calculated and literature vaporization enthalpies values of 415 aromatic and heteroaromatic compounds were compared. Average absolute deviation amounted to 1.3 kJ·mol⁻¹. The proposed approach is especially valuable for calculation of the vaporization enthalpies of low-volatile compounds, including those solid at T = 298.15 K.

提出了一种计算T  = 298.15 K的芳香族和杂芳香族化合物汽化焓的方法，其精确度与实验相当。可以从液体的溶液焓和在苯中的溶剂化焓来计算汽化焓。在给定类型的芳族化合物中，液体的溶液焓显示为常数。对于一组67种无法分子间氢键结合的液体和41种固体芳族和杂芳族化合物，实验证明，液体或过冷液体在苯中的溶液焓等于1±1 kJ·mol ^-1。还提出了考虑分子间氢键的方法，例如在苯酚，苯胺，吡咯衍生物中。以前提出了溶剂化焓的计算方法。

比较了415种芳香族和杂芳香族化合物的计算出的蒸发焓值和文献中的蒸发焓值。平均绝对偏差为1.3kJ·mol ^-1。所提出的方法对于计算低挥发性化合物（包括在T  = 298.15 K时为固体的化合物）的蒸发焓特别有价值。