Reappraisal of Empirical Solvent Polarity Scales for Organic Solvents
Reappraisal of Empirical Solvent Polarity Scales for Organic Solvents
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DOI：
10.1002/cmtd.202000039
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
S. Spange;Nadine Weiß;Caroline H. Schmidt;K. Schreiter
中科院分区：
文献类型：
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作者：
S. Spange;Nadine Weiß;Caroline H. Schmidt;K. Schreiter
给出了Reichardt‘set(30)、CatalánSdP(溶剂偶极)、SP(溶剂极化率)、SA(溶剂酸度)、SB(溶剂碱度)、Kamlet-Taftπ*(偶极/极化率)、α(氢键给予能力)和β(氢键接受能力)等极性参数与16 1种纯有机溶剂摩尔浓度的关系。大多数情况下，只要单独考虑每个单独的溶剂类别，就可以得到极性参数与摩尔浓度的函数的线性关系。对Theet(30)、Kamlet-Taftπ*和α以及CatalánSA和SB参数提出了物理上不同的解释。并将希尔德布兰德溶解度参数与衍射指数相结合，与上述溶剂参数进行了相关分析。可以得出结论，从溶剂变色UV/Vis测量得到的经验极性参数本质上是探针分子结构的函数。
Correlations of Reichardt'sET(30), the CatalánSdP(solvent dipolarity),SP(solvent polarizability),SA(solvent acidity),SB(solvent basicity), Kamlet‐Taftπ* (dipolarity/polarizability),α(hydrogen bond donating ability) andβ(hydrogen bond accepting ability) polarity parameters with the molar concentration of 161 pure organic solvents are presented. Mostly, linear relationships of the polarity parameter as a function of molar concentration are obtained as long as each individual solvent class is considered separately. A physically different interpretation of theET(30), Kamlet‐Taftπ* andαas well as CatalánSAandSBparameters has been proposed. Furthermore, the Hildebrand solubility parameter in combination with the diffraction index is used for the correlation analysis with the above‐mentioned solvent parameters. It can be concluded that empirical polarity parameters derived from solvatochromic UV/Vis measurements are inherently a function of the molecular structure of the probe.