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本文用络合平衡及快交换的方法定量描述了磷酸三乙酯(TEP)、四氢呋喃(THF)、二氧六环(DO)和乙腈(AN)水溶液中化学位移随浓度变化的曲线。发现体系中未配位水的~1H化学位移与其浓度的关系为:H_2O δ_0=1.07+3.71e~(k(0.018-1)/[H_2O])_OK值与溶剂的供电性和分子量有关。溶剂破坏水结构的能力取决于它的供电性。
In this paper, the chemical shifts in concentration of triethylphosphate (TEP), tetrahydrofuran (THF), dioxane (DO) and acetonitrile (AN) were quantitatively characterized by complex equilibrium and fast exchange. It is found that the relationship between the ~ 1H chemical shift and the concentration of unpaired water in the system is: H 2 O δ 0 = 1.07 + 3.71e ~ (k (0.018-1) / [H 2 O)) _OK The value is related to the power supply and the molecular weight of the solvent. The ability of a solvent to destroy a water structure depends on its power supply.