How Many Molecular Layers of Polar Solvent Molecules Control Chemistry? The Concept of Compensating Dipoles
作者:Heinz Langhals、Patricia Braun、Christian Dietl、Peter Mayer
DOI:10.1002/chem.201300770
日期:2013.9.27
The extension of the solvent influence of the shell into the volume of a polar medium was examined by means of anti‐collinear dipoles on the basis of the ET(30) solvent polarity scale (i.e., the molar energy of excitation of a pyridinium‐N‐phenolatebetaine dye; generally: ET=28 591 nm kcal mol−1/λmax) where no compensation effects were found. As a consequence, solvent polarity effects are concentrated
在E T(30)溶剂极性标度(即,吡啶鎓激发的摩尔能)的基础上,通过反共线偶极子检查了壳层对溶剂的影响在极性介质中的扩展。ñ -phenolatebetaine染料;通常:ê Ť = 28 591纳米千卡摩尔-1 / λ最大),其中没有发现补偿效应。结果,溶剂极性的影响集中到溶质周围几千皮米的非常薄的层,在该薄层中向本体溶剂的延伸变得不重要。讨论了水与气相的薄表层的平行性。