常见氘代溶剂和杂质在氢谱中的峰

1、常见笊代溶剂和杂质在氢谱中 的峰常用笊代溶剂和杂质峰在1H谱中的化学位移测试核磁的样品一般要求比较纯，并且能够溶解在笊代试剂中，这样才能测得高分辨率的图谱为不干扰谱图，所用溶剂分子中的氢都应被笊取代，但难免有氢的残余（1%左右），这样就会产生溶剂峰; 除了残存的质子峰外，溶剂中有时会有微童的H2O而产生水峰，而且这个H20峰的位置也会因溶剂的不 同而不同；另外，在样品（或制备过程）中，也难免会残留一些杂质，在图谱上就会有杂质峰，应注意识 别.以下给出了一些常见溶剂峰利杂质峰的化学位移：常用佩代溶剂和杂质峰在1H谱中的化学位移 单位：ppm溶剂CDC13(CD3)2CO(CD3)2SOC6D6C

2、D3CNCD3OHD2O溶剂峰7.262.052.497.161.943.314.80水峰1.562.843.330.402.134.87乙酸2.101.961.911.551.961.992.08丙酮2.172.092.091.552.082.152.22乙睛2.102.052.071.551.962.032.06苯7.367367.377.157.377.33叔丁醇CH31.281.18 1.111.051.161.40)1.24OH_4.191.552.18叔丁基甲醛CCH31.191.131.111.071.141.151.21OCH33.223.133.083.043.133.203

3、.22氯仿7.268.028326.157.587.90环己烷1.431.431.401.401.441.451,2 二氯甲烷3.733.873.902.903.813.78二氯甲烷5.305.635.764.275.445.49乙醛CH3(t)1.211.111.091.111.121.181.17CH2(q)3.483.413.383.263.423.493.56二甲基甲酰胺CH8.027.967.957.637.927.797.92CH32.962.942.892.362.892.993.01CH32.882.782.731.862力2$62.85二甲基亚矶2.622.522.541.6

4、82.502.652.71二氧杂环3.713.593.573.353.603.663.75乙醇CH31.251.121.060.961.121.191.17CH2(q)3.723.573.443.343.543.603.65OH(s)1323.393.632.47乙酸乙酯CH3CO2.051.971.991.651.972.012.07OCH2(q)4.124.054.033.894.064.094.14CH3(t)1.261.201.170.921.201.241.24甲乙昭CH3CO2.142.072.071.582.062.122.19CH2(q)2.462.452.431.812.43

5、2.503.18CH3(t)1.060.960.910.850.961.011.26乙二醇3.763.283.343.413.513.593.65润滑脂CH3(m)0.860.870.920.860.88CH2(br)1.261.291.361.271.29正己烷CH3(t)0.880.880.S60.890.890.90CH2 (in)1.261.281.251.241.281.29甲醉CH33.493.313.163.073.283.343.34on1.093.124.012.16正戊烷CH3(t)0.880.880.860.870.890.90CH2(m)1.271.271.271.231.291.29异丙醇CH3(d)1.221.101.()40.951.091.501.17CH4.043.903.783.673.873.924.02硅脂0.070.13-0.290.080.10 四氢咲喃CH21.851.791.761.401.801.871.88CH2O3.763.633.603.573.643.713.74甲苯CH32.362.322.302.112.332.32CH (o/p)7.177.207.187.027.307.16CH (m)7.257.207.257.13