NMR位移试剂Eu(fod)_4^-对锍盐~1H和^(13)C NMR的影响

Effect of ~1H and ^(13)C NMR Spectra of Sulfonium Salts by NMR Shift Reagent Eu(fod)_4^-

合成了八种新的四氟硼酸二甲基苯基锍,用元素分析和核磁共振对其结构进行了表征。研究了以CDCl_3溶剂,NMR位移试剂Eu(fod)_4^-对所合成锍盐的~1H和^(13)C NMR的影响。结果表明,Eu(fod)_4^-是一个对锍盐非常有效的位移试剂,且Eu(fod)_4^-对二甲基苯基锍盐之甲基的~1H和^(13)C NMR的位移呈线性关系。

Eight kinds of new dimethylphenylsulfoniurn tetrafluoroborates are synthesized and their structures are charftcterizatized by elementary analysis and nuclear magnetic resonance. The effect of 1H and 13C NMR spectra of sulfoium salts by NMR shift reagent Eu(fod)4- is studied in solvent CDCl3. The results show that Eu(fod)4- is an effective NMR shift reagent for sulfonium salts and 1H NMR spectra of methyl shift varies linearly with 13 C NMR spectra of methyl shift in dimethylphenylsulfonium salts in the presence of NMR shift reagent Eu(fod)4-.