发布时间:2023-01-05 09:23 原文链接: 氢谱中的溶剂峰对照表

在核磁共振(NMR)氢谱分析中,了解常见溶剂和杂质的化学位移对于正确解析谱图至关重要。以下表格列出了一些常用的氘代溶剂以及可能遇到的杂质在氢谱中的化学位移值。

溶剂 CDCl3(CD3)2CO(CD3)2SOC6D6CD3CNCD3OHD2O
溶剂峰7.262.052.497.161.943.314.8
水峰1.562.843.330.42.134.87
乙酸2.11.961.911.551.961.992.08
丙酮2.172.092.091.552.082.152.22
乙腈2.12.052.071.551.962.032.06
7.367.367.377.157.377.33
叔丁醇CH31.281.181.111.051.161.41.24
OH4.191.552.18
乙醇CH3(t)1.251.121.060.961.121.191.17
CH2(q)3.723.573.443.343.543.63.65
OH(s)1.323.393.632.47
乙酸乙酯CH3CO2.051.971.991.651.972.012.07
OCH2(q)4.124.054.033.894.064.094.14
CH3(t)1.261.21.170.921.21.241.24
乙二醇3.763.283.343.413.513.593.65
正己烷CH3(t)0.880.880.860.890.890.9
CH2(m)1.261.281.251.241.281.29
甲醇CH33.493.313.163.073.283.343.34
OH1.093.124.012.16
正戊烷CH3(t)0.880.880.860.870.890.9
CH2(m)1.271.271.271.231.291.29
异丙醇CH3(d)1.221.11.040.951.091.51.17
CH4.043.93.783.673.873.924.02
四氢呋喃CH21.851.791.761.41.81.871.88
CH2O3.763.633.63.573.643.713.74
甲苯CH32.362.322.32.112.332.32
CH(o/p)7.177.27.187.027.37.16
CH(m)7.257.27.257.137.37.16
氯仿7.268.028.326.157.587.9
环己烷1.431.431.41.41.441.45
1,2-二氯甲烷3.733.873.92.93.813.78
二氯甲烷5.35.635.764.275.445.49
乙醚CH3(t)1.211.111.091.111.121.181.17
CH2(q)3.483.413.383.263.423.493.56
二甲基甲酰胺CH8.027.967.957.637.927.797.92
CH32.962.942.892.362.892.993.01
CH32.882.782.731.862.772.862.85
二甲基亚砜2.622.522.541.682.52.652.71
二氧杂环3.713.593.573.353.63.663.75


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简单的氢谱来自于含有样本的溶液。为了避免溶剂中的质子的干扰,制备样本时通常使用氘代溶剂(氘=2H, 通常用D表示),例如:氘代水D2O,氘代丙酮(CD3)2CO,氘代甲醇CD3OD,氘代二甲亚砜(CD3)2SO和氘代氯仿CDCl3。同时,一些不含氢的溶剂,例如四氯化碳CCl4和二硫化碳CS2,也可被用于制备测试样品。