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首页> 外文期刊>Bulletin of the Chemical Society of Japan >NMR Chemical Shift Methods for Binding Constant Determination of an Organic Anion and alpha-Cyclodextrin
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NMR Chemical Shift Methods for Binding Constant Determination of an Organic Anion and alpha-Cyclodextrin

机译:NMR化学位移法测定有机阴离子和α-环糊精的结合常数

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Internal reference compounds suitable for proton chemical shift measurements of organic anions is deuterium oxide solutions are proposed and used to determine the binding constant of sodium hexane-1 sulfonate (SHS) and alpha-cyclodextrin (alpha-CD). The chemical shift of the methyl proton of sodium methyl sulfate (MeS), referred to external sodium 4,4-dimethyl-4-silapentane-1-sulfonate (DSS), changes linearly with the alpha-CD concentration, because of the volume magnetic susceptibility effect. The chemical shifts of the SHS methyl proton, referred to external DSS and corrected for this magnetic susceptibility effect, as well as referred to internal MeS and methanol (MeOH), provide reliable binding constants of SHS and alpha-CD. Therefore, MeS and MeOH are appropriate internal standards for organic anions. The present results serve not only for choosing
机译:提出了适用于有机阴离子的质子化学位移测量的内部参考化合物,是氘氧化溶液,并用于确定己烷-1磺酸钠(SHS)和α-环糊精(α-CD)的结合常数。甲基硫酸氢钠(MeS)的甲基质子的化学位移,称为外部4,4-二甲基-4-硅戊烷-1-磺酸钠(DSS),由于体积磁性而线性变化。药敏作用。 SHS甲基质子的化学位移,称为外部DSS,并针对此磁化率效应进行了校正,以及内部MeS和甲醇(MeOH),提供了SHS和α-CD的可靠结合常数。因此,MeS和MeOH是有机阴离子的合适内标。目前的结果不仅用于选择

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