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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Diffusion of Disubstituted Aromatic Compounds in Ethanol
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Diffusion of Disubstituted Aromatic Compounds in Ethanol

机译：双取代芳族化合物在乙醇中的扩散

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摘要

Limiting mutual diffusion coefficients of aromatic compounds containing two polar groups in ethanol have been measured at 298.2 K by using the chromatographic peak-broadening method. The data are compared with those of nonpolar pseudoplanar solutes, and the effects due to hydrogen bonding on diffusion together with the solvation numbers are evaluated. It is found that the effects and the solvation numbers are generally large and dependent on the nature and position of the polar groups attached. For all hetero-disubstituted aromatic isomers studied, the diffusivity trends are p < m < o, which are different from the previous results for the nonpolar isomers. The findings are discussed in terms of the chemical structure of the solutes as well as the intra- and intermolecular interactions.
机译：使用色谱峰展宽法，在乙醇中含有两个极性基团的芳香族化合物的极限相互扩散系数为298.2K。将数据与非极性假平面溶质进行比较，并评估氢键对扩散以及溶剂化数的影响。发现效果和溶剂化数目通常很大，并且取决于所连接的极性基团的性质和位置。对于所研究的所有杂二取代芳族异构体，扩散趋势为p

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