本文报道了三个由三氟乙氧基取代的氯代三氟甲基吡啶化合物的核磁共振氢谱及电子轰击质谱,结果表明,与己氧基化合物相对照,在＇H-NMR中,由于三氟甲基的强吸电子作用,其次甲基移向低场,并给出了一组具有较大偶合常数的四重峰。在EIMS中,均存在较多的骨架重排离子峰,其中C—O,C—F,C—CF_3,键断裂及失去CO形成的五元,四元含氮杂环离子是重要质谱特征. In this paper, the 1H NMR and electron impact mass spectra of three chlorotrifluoromethyl pyridine compounds substituted with trifluoroethoxy groups have been reported. The results show that, in contrast to the hexyloxy compounds, The strong electron-withdrawing effect of trifluoromethyl group, followed by the shift of the methyl group to the low field, gives a group of quartet peaks with large coupling constants. In the EIMS, there are more skeleton rearrangement ion peaks. Among them, five-membered, four-membered nitrogen-containing heterocyclic ions with C-O, C-F, C-CF 3,