核磁氢谱常见溶剂峰
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常用氘代溶剂和杂质峰在1H谱中的化学位移测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H20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和杂质峰的化学位移:常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶齐U CDCI3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD30H D20溶剂峰7.26 2.05 2.49 7.16 1.943.314.80水峰 1.56 2.84 3.33 0.40 2.13 4.87乙酸 2.10 1.96 1.91 1.55 1.96 1.99 2.08丙酮 2.17 2.09 2.09 1.55 2.08 2.15 2.22乙腈 2.10 2.05 2.07 1.55 1.96 2.03 2.06苯7.36 7.36 7.37 7.15 7.37 7.33叔丁醇CH3 1.28 1.18 1.11 1.05 1.16 1.40 1.24OH———— 4.19 1.55 2.18叔丁基甲醚CCH3 1.19 1.13 1.11 1.07 1.141.151.21OCH3 3.22 3.13 3.08 3.04 3.13 3.20 3.22 氯仿7.26 8.02 8.32 6.15 7.58 7.90环己烷 1.43 1.43 1.40 1.40 1.44 1.451,2-二氯甲烷 3.73 3.87 3.90 2.90 3.81 3.78二氯甲烷 5.30 5.63 5.76 4.27 5.44 5.49乙醚CH3(t) 1.21 1.11 1.09 1.11 1.12 1.18 1.17 CH2(q) 3.48 3.41 3.38 3.26 3.42 3.49 3.56 二甲基甲酰胺CH 8.02 7.96 7.95 7.63 7.92 7.79 7.92CH3 2.96 2.94 2.89 2.36 2.89 2.993.01CH3 2.88 2.78 2.73 1.86 2.77 2.862.85二甲基亚砜 2.62 2.52 2.54 1.68 2.50 2.65 二氧杂环 3.71 3.59 3.57 3.35 3.60 3.66乙醇2.713.75CH3(t) 1.25 1.12 1.06 0.96 1.12 1.19 1.17 CH2(q) 3.72 3.57 3.44 3.34 3.54 3.60 3.65 OH(s) 1.32 3.39 3.63 — 2.47 乙酸乙酯CH3CO 2.05 1.97 1.99 1.65 1.97 2.01 2.07 OCH2(q) 4.12 4.05 4.03 3.89 4.06 4.09 4.14 CH3(t) 1.26 1.20 1.17 0.92 1.20 1.24 1.24甲乙酮CH3CO 2.14 2.07 2.07 1.58 2.06 2.12 2.19 CH2(q) 2.46 2.45 2.43 1.81 2.43 2.50 3.18 CH3(t) 1.06 0.96 0.91 0.85 0.96 1.01 1.26乙二醇 3.76 3.28 3.34 3.41 3.51 3.59 3.65润滑脂CH3(m)0.86 0.87 —0.920.86 0.88CH2(br) 1.26 1.29 — 1.36 1.27 1.29 正己烷CH3(t)0.88 0.88 0.860.89 0.89 0.90CH2 (m) 1.26 1.28 1.25 1.24 1.28 1.29甲醇CH3 3.49 3.31 3.16 3.07 3.28 3.34 3.34OH 1.09 3.12 4.01 2.16正戊烷CH3(t)0.88 0.88 0.860.87 0.89 0.90CH2(m) 1.27 1.27 1.27 1.23 1.29 1.29异丙醇CH3(d) 1.22 1.10 1.04 0.95 1.09 1.50 1.17CH 4.04 3.90 3.78 3.67 3.87 3.92 4.02硅脂0.07 0.13 —0.29 0.08 0.10四氢呋喃CH2 1.85 1.79 1.76 1.40 1.80 1.87 1.88CH20 3.76 3.63 3.60 3.57 3.64 3.71 3.74甲苯CH3 2.36 2.32 2.30 2.11 2.33 2.32 —CH( o/p)7.17 7.20 7.18 7.02 7.30 7.16 —CH( m)7.25 7.20 7.25 7.13 7.30 7.16 —三乙基胺CH3 1.03 0.96 0.93 0.96 0.96 1.05 0.99CH2 : 2.53 2.45 2.43 2.40 2.45 2.58 2.57石油醚0.5-1.5 0.6-1.9 ——(注:专业文档是经验性极强的领域,无法思考和涵盖全面,素材和资料部分来自网络,供参考。
注:JHD为溶剂本身的其他1H对与之相对应的1H之间的耦合常数,JCD为溶剂本身1H对13C的耦合常数,H2O和交换了D的HOD上的1H产生的即水峰的化学位移氯仿:小、中小、中等极性DMSO:芳香系统(日光下自然显色、紫外荧光)。
对于酚羟基能够出峰。
芳香化合物还是芳香甙,都为首选。
吡啶:极性大的,特别是皂甙对低、中极性的样品,最常采用氘代氯仿作溶剂,因其价格远低于其它氘代试剂。
极性大的化合物可采用氘代丙酮、重水等。
针对一些特殊的样品,可采用相应的氘代试剂:如氘代苯(用于芳香化合物、芳香高聚物)、氘代二甲基亚砜(用于某些在一般溶剂中难溶的物质)、氘代吡啶(用于难溶的酸性或芳香化合物)等。
丙酮:中等极性甲醇:极性大氯仿—甲醇:石:乙 5;1小极性石:丙 2:1——1:1中等极性氯仿:甲醇6:1极性以上含有一个糖2:1 含有两个糖含有糖的三萜皂甙:一般用吡啶常见溶剂的化学位移常见溶剂的1H在不同氘代溶剂中的化学位移值常见溶剂的化学位移常见溶剂的13C在不同氘代溶剂中的化学位移值核磁知识(NMR)一:样品量的选择氢谱,氟谱,碳谱至少需要5mg. 1H-1H COSY, 1H-1H NOESY, 1H-13C HMBC, 1H-13C HSQC需要10-15mg. 碳谱需要30mg.二:如何选择氘代溶剂常用氘代溶剂: CDCl3, DMSO, D2O, CD3OD.特殊氘代溶剂: CD3COCD3, C6D6, CD3CN。
极性较大的化合物可以选择用D2O或CD3OD,如果想要观察活泼氢切记不能选择D2O和CD3OD。
CDCl3为人民币2-3元,D2O为人民币6元,DMSO为人民币10元,CD3OD为人民币30元。
Solvent 化学位移(ppm) 水峰位移(ppm)CDCl3 7.26 1.56DMSO 2.50 3.33CD3OD 3.31 4.87D2O 4.79CD3COCD3 2.05 2.84。
测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H2O而产生水峰,而且这个H2O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和杂质峰的化学位移:常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶剂 CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OH D2O溶剂峰水峰—乙酸丙酮乙腈苯—叔丁醇 CH3OH ————叔丁基甲醚CCH3OCH3氯仿—环己烷—1,2-二氯甲烷—二氯甲烷—乙醚CH3(t)CH2(q)二甲基甲酰胺CHCH3CH3二甲基亚砜二氧杂环乙醇CH3(t)OH(s) ———乙酸乙酯CH3COOCH2(q)CH3(t)甲乙酮CH3COCH2(q)CH3(t)乙二醇润滑脂CH3(m) ——CH2(br) ——正己烷CH3(t) —CH2 (m) —甲醇CH3OH ——正戊烷CH3(t) —CH2(m) —异丙醇CH3(d)CH硅脂——四氢呋喃CH2CH2O甲苯CH3 —CH(o/p)—三乙基胺CH3CH2石油醚—————。
测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H2O而产生水峰,而且这个H2O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。
常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶剂—CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OH D2O溶剂峰—7.26 2.05 2.49 7.16 1.94 3.31 4.80水峰—1.562.843.33 0.40 2.134.87 —乙酸—2.10 1.96 1.91 1.55 1.96 1.99 2.08丙酮—2.17 2.09 2.09 1.55 2.08 2.15 2.22乙腈—2.10 2.05 2.07 1.55 1.96 2.03 2.06苯—7.36 7.36 7.37 7.15 7.37 7.33 —叔丁醇CH3 1.28 1.18 1.11 1.05 1.16 1.40 1. 24OH —— 4.19 1.55 2.18 ——叔丁基甲醚CCH3 1.19 1.13 1.11 1.07 1.14 1.15 1.21OCH3 3.22 3.13 3.08 3.04 3.13 3.2 0 3.22氯仿—7.26 8.02 8.32 6.15 7.58 7.90 —环己烷—1.43 1.43 1.40 1.40 1.44 1.45 —1,2-二氯甲烷 3.73 3.87 3.90 2.90 3.81 3.78 —二氯甲烷—5.30 5.63 5.76 4.27 5.44 5.49 —乙醚 CH3(t) 1.21 1.11 1.09 1.11 1.12 1.18 1.17CH2(q) 3.48 3.41 3.38 3.26 3.42 3.4 9 3.56二甲基甲酰胺CH 8.02 7.96 7.95 7.63 7.92 7.79 7.92CH3 2.96 2.94 2.89 2.36 2.89 2.99 3.0186 2.85二甲基亚砜—2.62 2.52 2.54 1.68 2.50 2.65 2.71二氧杂环—3.71 3.59 3.57 3.35 3.60 3.66 3.75乙醇 CH3(t) 1.25 1.12 1.06 0.96 1.12 1.19 1.17CH2(q) 3.72 3.57 3.44 3.34 3.54 3.60 3.65OH(s) 1.32 3.39 3.63 —2.47 ——乙酸乙酯CH3CO2.05 1.97 1.99 1.65 1.97 2.01 2.07OCH2(q) 4.12 4.05 4.03 3.89 4.06 4 .09 4.14CH3(t) 1.26 1.20 1.17 0.92 1.20 1.24 1.24甲乙酮CH3CO 2.14 2.07 2.07 1.58 2.06 2.12 2.1950 3.18CH3(t) 1.06 0.96 0.91 0.85 0.96 1.01 1.26乙二醇—3.76 3.28 3.34 3.41 3.51 3.59 3.6 5润滑脂 CH3(m) 0.86 0.87 —0.92 0.86 0.88 —CH2(br) 1.26 1.29 —1.36 1.27 1.29 —正己烷CH3(t) 0.88 0.88 0.86 0.89 0.89 0.90 —CH2(m) 1.26 1.28 1.25 1.24 1.28 1.29 —甲醇 CH3 3.49 3.31 3.16 3.07 3.28 3.34 3.34OH 1.09 3.12 4.01 2.16 ——正戊烷 CH3(t) 0.88 0.88 0.86 0.87 0.89 0.90 —CH2(m) 1.27 1.27 1.27 1.23 1.29 1 .29 —异丙醇CH3(d) 1.22 1.10 1.04 0.95 1.09 1.50 1.17CH 4.04 3.90 3.78 3.67 3.87 3.92 4.02硅脂— 0.07 0.13 —0.29 0.08 0.10 —四氢呋喃 CH2 1.85 1.79 1.76 1.40 1.80 1.87 1.88CH2O 3.76 3.63 3.60 3.57 3.64 3.7 1 3.74甲苯 CH3 2.36 2.32 2.30 2.11 2.33 2.3 2 —CH(o/p)7.17 7.20 7.18 7.02 7.30 7.16 —CH(m) 7.25 7.20 7.25 7.13 7.30 7.16 —三乙基胺 CH3 1.03 0.96 0.93 0.96 0.96 1.05 0.99CH2 2.53 2.45 2.43 2.40 2.45 2.58 2.57石油醚— 0.5-1.5 0.6-1.9 —————。
测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H2O而产生水峰,而且这个H2O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。
常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶剂—CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OH D2O溶剂峰—7.26 2.05 2.49 7.16 1.94 3.31 4.80水峰— 1.56 2.84 3.33 0.40 2.13 4.87 —乙酸— 2.10 1.96 1.91 1.55 1.96 1.99 2.08丙酮— 2.17 2.09 2.09 1.55 2.08 2.15 2.22乙腈— 2.10 2.05 2.07 1.55 1.96 2.03 2.06苯—7.36 7.36 7.37 7.15 7.37 7.33 —叔丁醇CH3 1.28 1.18 1.11 1.05 1.16 1.40 1.24 OH —— 4.19 1.55 2.18 ——叔丁基甲醚CCH3 1.19 1.13 1.11 1.07 1.14 1.15 1.21OCH3 3.22 3.13 3.08 3.04 3.13 3.20 3.22氯仿—7.26 8.02 8.32 6.15 7.58 7.90 —环己烷— 1.43 1.43 1.40 1.40 1.44 1.45 —1,2-二氯甲烷 3.73 3.87 3.90 2.90 3.81 3.78 —二氯甲烷— 5.30 5.63 5.76 4.27 5.44 5.49 —乙醚 CH3(t) 1.21 1.11 1.09 1.11 1.12 1.18 1.17 CH2(q) 3.48 3.41 3.38 3.26 3.42 3.49 3.56二甲基甲酰胺CH 8.02 7.96 7.95 7.63 7.92 7.79 7.92CH3 2.96 2.94 2.89 2.36 2.89 2.99 3.01CH3 2.88 2.78 2.73 1.86 2.77 2.86 2.85二甲基亚砜— 2.62 2.52 2.54 1.68 2.50 2.65 2.71二氧杂环— 3.71 3.59 3.57 3.35 3.60 3.66 3.75乙醇 CH3(t) 1.25 1.12 1.06 0.96 1.12 1.19 1.17 CH2(q) 3.72 3.57 3.44 3.34 3.54 3.60 3.65OH(s) 1.32 3.39 3.63 — 2.47 ——乙酸乙酯CH3CO 2.05 1.97 1.99 1.65 1.97 2.01 2.07 OCH2(q) 4.12 4.05 4.03 3.89 4.06 4.09 4.14CH3(t) 1.26 1.20 1.17 0.92 1.20 1.24 1.24甲乙酮CH3CO 2.14 2.07 2.07 1.58 2.06 2.12 2.19 CH2(q) 2.46 2.45 2.43 1.81 2.43 2.50 3.18CH3(t) 1.06 0.96 0.91 0.85 0.96 1.01 1.26乙二醇— 3.76 3.28 3.34 3.41 3.51 3.59 3.65润滑脂 CH3(m) 0.86 0.87 —0.92 0.86 0.88 —CH2(br) 1.26 1.29 — 1.36 1.27 1.29 —正己烷CH3(t) 0.88 0.88 0.86 0.89 0.89 0.90 —CH2 (m) 1.26 1.28 1.25 1.24 1.28 1.29 —甲醇CH3 3.49 3.31 3.16 3.07 3.28 3.34 3.34 OH 1.09 3.12 4.01 2.16 ——正戊烷 CH3(t) 0.88 0.88 0.86 0.87 0.89 0.90 —CH2(m) 1.27 1.27 1.27 1.23 1.29 1.29 —异丙醇CH3(d) 1.22 1.10 1.04 0.95 1.09 1.50 1.17 CH 4.04 3.90 3.78 3.67 3.87 3.92 4.02 硅脂—0.07 0.13 —0.29 0.08 0.10 —四氢呋喃 CH2 1.85 1.79 1.76 1.40 1.80 1.87 1.88 CH2O 3.76 3.63 3.60 3.57 3.64 3.71 3.74 甲苯 CH3 2.36 2.32 2.30 2.11 2.33 2.32 —CH(o/p)7.17 7.20 7.18 7.02 7.30 7.16 —CH(m) 7.25 7.20 7.25 7.13 7.30 7.16 —三乙基胺 CH3 1.03 0.96 0.93 0.96 0.96 1.05 0.99 CH2 2.53 2.45 2.43 2.40 2.45 2.58 2.57 石油醚—0.5-1.5 0.6-1.9 —————。
测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H2O而产生水峰,而且这个H2O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。
常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶剂—CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OH D2O溶剂峰—7.26 2.05 2.49 7.16 1.94 3.31 4.80水峰— 1.56 2.84 3.33 0.40 2.13 4.87 —乙酸— 2.10 1.96 1.91 1.55 1.96 1.99 2.08丙酮— 2.17 2.09 2.09 1.55 2.08 2.15 2.22乙腈— 2.10 2.05 2.07 1.55 1.96 2.03 2.06苯—7.36 7.36 7.37 7.15 7.37 7.33 —叔丁醇CH3 1.28 1.18 1.11 1.05 1.16 1.40 1.24 OH —— 4.19 1.55 2.18 ——叔丁基甲醚CCH3 1.19 1.13 1.11 1.07 1.14 1.15 1.21OCH3 3.22 3.13 3.08 3.04 3.13 3.20 3.22氯仿—7.26 8.02 8.32 6.15 7.58 7.90 —环己烷— 1.43 1.43 1.40 1.40 1.44 1.45 —1,2-二氯甲烷 3.73 3.87 3.90 2.90 3.81 3.78 —二氯甲烷— 5.30 5.63 5.76 4.27 5.44 5.49 —乙醚 CH3(t) 1.21 1.11 1.09 1.11 1.12 1.18 1.17 CH2(q) 3.48 3.41 3.38 3.26 3.42 3.49 3.56二甲基甲酰胺精品文档CH 8.02 7.96 7.95 7.63 7.92 7.79 7.92CH3 2.96 2.94 2.89 2.36 2.89 2.99 3.01CH3 2.88 2.78 2.73 1.86 2.77 2.86 2.85 二甲基亚砜— 2.62 2.52 2.54 1.68 2.50 2.65 2.71 二氧杂环— 3.71 3.59 3.57 3.35 3.60 3.66 3.75 乙醇 CH3(t) 1.25 1.12 1.06 0.96 1.12 1.19 1.17 CH2(q) 3.72 3.57 3.44 3.34 3.54 3.60 3.65OH(s) 1.32 3.39 3.63 — 2.47 ——乙酸乙酯CH3CO 2.05 1.97 1.99 1.65 1.97 2.01 2.07 OCH2(q) 4.12 4.05 4.03 3.89 4.06 4.09 4.14CH3(t) 1.26 1.20 1.17 0.92 1.20 1.24 1.24甲乙酮CH3CO 2.14 2.07 2.07 1.58 2.06 2.12 2.19 CH2(q) 2.46 2.45 2.43 1.81 2.43 2.50 3.18CH3(t) 1.06 0.96 0.91 0.85 0.96 1.01 1.26乙二醇— 3.76 3.28 3.34 3.41 3.51 3.59 3.65润滑脂 CH3(m) 0.86 0.87 —0.92 0.86 0.88 —CH2(br) 1.26 1.29 — 1.36 1.27 1.29 —正己烷CH3(t) 0.88 0.88 0.86 0.89 0.89 0.90 —CH2 (m) 1.26 1.28 1.25 1.24 1.28 1.29 —甲醇CH3 3.49 3.31 3.16 3.07 3.28 3.34 3.34 OH 1.09 3.12 4.01 2.16 ——正戊烷 CH3(t) 0.88 0.88 0.86 0.87 0.89 0.90 —CH2(m) 1.27 1.27 1.27 1.23 1.29 1.29 —异丙醇CH3(d) 1.22 1.10 1.04 0.95 1.09 1.50 1.17 CH 4.04 3.90 3.78 3.67 3.87 3.92 4.02 硅脂—0.07 0.13 —0.29 0.08 0.10 —四氢呋喃 CH2 1.85 1.79 1.76 1.40 1.80 1.87 1.88 CH2O 3.76 3.63 3.60 3.57 3.64 3.71 3.74 甲苯 CH3 2.36 2.32 2.30 2.11 2.33 2.32 —精品文档CH(o/p)7.17 7.20 7.18 7.02 7.30 7.16 —CH(m) 7.25 7.20 7.25 7.13 7.30 7.16 —三乙基胺 CH3 1.03 0.96 0.93 0.96 0.96 1.05 0.99 CH2 2.53 2.45 2.43 2.40 2.45 2.58 2.57 石油醚—0.5-1.5 0.6-1.9 —————精品文档。
常见有机溶剂核磁氢谱位移
常见有机溶剂核磁氢谱的位移通常以ppm(parts per million,百万分之一)为单位进行表示。
下面是一些常见有机溶剂的核磁氢谱位移范围:
- 甲醇(CH₃OH):3.30 - 3.40 ppm
- 乙醇(C₂H₅OH):1.20 - 1.30 ppm
- 丙酮(CH₃COCH₃):2.00 - 2.10 ppm
- 乙酸(CH₃COOH):2.05 - 2.10 ppm
- 氯仿(CHCl₃):7.20 - 7.40 ppm
- 苯(C₆H₅):7.00 - 7.30 ppm
- 二氯甲烷(CH₂Cl₂):5.00 - 5.15 ppm
- 二甲基亚砜(DMSO,(CH₃)₂SO):2.50 - 2.70 ppm
- 四氢呋喃(THF,C₄H₈O):2.50 - 2.70 ppm
- 二甲基甲酰胺(DMF,C₃H₇NO):2.70 - 2.95 ppm
这些数值仅作为参考,实际上可能会受到其他因素的影响,如温度、浓度和所溶质的影响。
在进行核磁共振实验时,通常需要根据实际实验条件对这些数值进行调整。
常用氘代溶剂和杂质峰在1H谱中的化学位移测试核磁的样品一般要求比较纯,并且能够溶解在氘代试剂中,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氘取代,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,溶剂中有时会有微量的H2O而产生水峰,而且这个H2O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和杂质峰的化学位移:常用氘代溶剂和杂质峰在1H谱中的化学位移单位:ppm溶剂 CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OH D2O溶剂峰 7.26 2.05 2.49 7.16 1.94 3.31 4.80水峰 1.56 2.84 3.33 0.40 2.13 4.87 —乙酸 2.10 1.96 1.91 1.55 1.96 1.99 2.08丙酮 2.17 2.09 2.09 1.55 2.08 2.15 2.22乙腈 2.10 2.05 2.07 1.55 1.96 2.03 2.06苯 7.36 7.36 7.37 7.15 7.37 7.33 —叔丁醇 CH3 1.28 1.18 1.11 1.05 1.16 1.40 1.24OH —— 4.19 1.55 2.18 ——叔丁基甲醚CCH3 1.19 1.13 1.11 1.07 1.14 1.15 1.21OCH3 3.22 3.13 3.08 3.04 3.13 3.20 3.22氯仿 7.26 8.02 8.32 6.15 7.58 7.90 —环己烷 1.43 1.43 1.40 1.40 1.44 1.45 —1,2-二氯甲烷 3.73 3.87 3.90 2.90 3.81 3.78 —二氯甲烷 5.30 5.63 5.76 4.27 5.44 5.49 —乙醚CH3(t) 1.21 1.11 1.09 1.11 1.12 1.18 1.17CH2(q) 3.48 3.41 3.38 3.26 3.42 3.49 3.56 二甲基甲酰胺CH 8.02 7.96 7.95 7.63 7.92 7.797.92CH3 2.96 2.94 2.89 2.36 2.89 2.99 3.01CH3 2.88 2.78 2.73 1.86 2.77 2.862.85二甲基亚砜 2.62 2.52 2.54 1.68 2.50 2.65 2.71 二氧杂环 3.71 3.59 3.57 3.35 3.60 3.66 3.75乙醇CH2(q) 3.72 3.57 3.44 3.34 3.54 3.60 3.65 OH(s) 1.32 3.39 3.63 — 2.47 ——乙酸乙酯CH3CO 2.05 1.97 1.99 1.65 1.97 2.01 2.07 OCH2(q) 4.12 4.05 4.03 3.89 4.06 4.09 4.14 CH3(t) 1.26 1.20 1.17 0.92 1.20 1.24 1.24 甲乙酮CH3CO 2.14 2.07 2.07 1.58 2.06 2.12 2.19 CH2(q) 2.46 2.45 2.43 1.81 2.43 2.50 3.18 CH3(t) 1.06 0.96 0.91 0.85 0.96 1.01 1.26 乙二醇 3.76 3.28 3.34 3.41 3.51 3.59 3.65润滑脂CH3(m) 0.86 0.87 — 0.92 0.86 0.88 —CH2(br) 1.26 1.29 — 1.36 1.27 1.29 —正己烷CH3(t) 0.88 0.88 0.86 0.89 0.89 0.90 —CH2 (m) 1.26 1.28 1.25 1.24 1.28 1.29 —甲醇CH3 3.49 3.31 3.16 3.07 3.28 3.34 3.34OH 1.09 3.12 4.01 2.16 ——正戊烷CH3(t) 0.88 0.88 0.86 0.87 0.89 0.90 —CH2(m) 1.27 1.27 1.27 1.23 1.29 1.29 —异丙醇CH3(d) 1.22 1.10 1.04 0.95 1.09 1.50 1.17 CH 4.04 3.90 3.78 3.67 3.87 3.92 4.02硅脂 0.07 0.13 — 0.29 0.08 0.10 —四氢呋喃CH2O 3.76 3.63 3.60 3.57 3.64 3.71 3.74 甲苯CH3 2.36 2.32 2.30 2.11 2.33 2.32 —CH(o/p) 7.17 7.20 7.18 7.02 7.30 7.16 —CH(m) 7.25 7.20 7.25 7.13 7.30 7.16 —三乙基胺CH3 1.03 0.96 0.93 0.96 0.96 1.05 0.99 CH2 2.53 2.45 2.43 2.40 2.45 2.58 2.57石油醚 0.5-1.5 0.6-1.9 —————友情提示:本资料代表个人观点,如有帮助请下载,谢谢您的浏览!。
Table1.1H NMR Dataproton mult CDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent residual peak7.26 2.05 2.507.16 1.94 3.31 4.79 H2O s 1.56 2.84a 3.33a0.40 2.13 4.87acetic acid CH3s 2.10 1.96 1.91 1.55 1.96 1.99 2.08 acetone CH3s 2.17 2.09 2.09 1.55 2.08 2.15 2.22 acetonitrile CH3s 2.10 2.05 2.07 1.55 1.96 2.03 2.06 benzene CH s7.367.367.377.157.377.33tert-butyl alcohol CH3s 1.28 1.18 1.11 1.05 1.16 1.40 1.24 OH c s 4.19 1.55 2.18tert-butyl methyl ether CCH3s 1.19 1.13 1.11 1.07 1.14 1.15 1.21 OCH3s 3.22 3.13 3.08 3.04 3.13 3.20 3.22 BHT b ArH s 6.98 6.96 6.877.05 6.97 6.92OH c s 5.01 6.65 4.79 5.20ArCH3s 2.27 2.22 2.18 2.24 2.22 2.21ArC(CH3)3s 1.43 1.41 1.36 1.38 1.39 1.40chloroform CH s7.268.028.32 6.157.587.90 cyclohexane CH2s 1.43 1.43 1.40 1.40 1.44 1.451,2-dichloroethane CH2s 3.73 3.87 3.90 2.90 3.81 3.78 dichloromethane CH2s 5.30 5.63 5.76 4.27 5.44 5.49diethyl ether CH3t,7 1.21 1.11 1.09 1.11 1.12 1.18 1.17 CH2q,7 3.48 3.41 3.38 3.26 3.42 3.49 3.56 diglyme CH2m 3.65 3.56 3.51 3.46 3.53 3.61 3.67 CH2m 3.57 3.47 3.38 3.34 3.45 3.58 3.61OCH3s 3.39 3.28 3.24 3.11 3.29 3.35 3.37 1,2-dimethoxyethane CH3s 3.40 3.28 3.24 3.12 3.28 3.35 3.37 CH2s 3.55 3.46 3.43 3.33 3.45 3.52 3.60 dimethylacetamide CH3CO s 2.09 1.97 1.96 1.60 1.97 2.07 2.08 NCH3s 3.02 3.00 2.94 2.57 2.96 3.31 3.06NCH3s 2.94 2.83 2.78 2.05 2.83 2.92 2.90 dimethylformamide CH s8.027.967.957.637.927.977.92 CH3s 2.96 2.94 2.89 2.36 2.89 2.99 3.01CH3s 2.88 2.78 2.73 1.86 2.77 2.86 2.85 dimethyl sulfoxide CH3s 2.62 2.52 2.54 1.68 2.50 2.65 2.71 dioxane CH2s 3.71 3.59 3.57 3.35 3.60 3.66 3.75 ethanol CH3t,7 1.25 1.12 1.060.96 1.12 1.19 1.17 CH2q,7d 3.72 3.57 3.44 3.34 3.54 3.60 3.65OH s c,d 1.32 3.39 4.63 2.47ethyl acetate CH3CO s 2.05 1.97 1.99 1.65 1.97 2.01 2.07C H2CH3q,7 4.12 4.05 4.03 3.89 4.06 4.09 4.14CH2C H3t,7 1.26 1.20 1.170.92 1.20 1.24 1.24 ethyl methyl ketone CH3CO s 2.14 2.07 2.07 1.58 2.06 2.12 2.19C H2CH3q,7 2.46 2.45 2.43 1.81 2.43 2.50 3.18CH2C H3t,7 1.060.960.910.850.96 1.01 1.26 ethylene glycol CH s e 3.76 3.28 3.34 3.41 3.51 3.59 3.65“grease”f CH3m0.860.870.920.860.88CH2br s 1.26 1.29 1.36 1.27 1.29n-hexane CH3t0.880.880.860.890.890.90CH2m 1.26 1.28 1.25 1.24 1.28 1.29HMPA g CH3d,9.5 2.65 2.59 2.53 2.40 2.57 2.64 2.61 methanol CH3s h 3.49 3.31 3.16 3.07 3.28 3.34 3.34 OH s c,h 1.09 3.12 4.01 2.16nitromethane CH3s 4.33 4.43 4.42 2.94 4.31 4.34 4.40 n-pentane CH3t,70.880.880.860.870.890.90CH2m 1.27 1.27 1.27 1.23 1.29 1.292-propanol CH3d,6 1.22 1.10 1.040.95 1.09 1.50 1.17 CH sep,6 4.04 3.90 3.78 3.67 3.87 3.92 4.02 pyridine CH(2)m8.628.588.588.538.578.538.52 CH(3)m7.297.357.39 6.667.337.447.45CH(4)m7.687.767.79 6.987.737.857.87 silicone grease i CH3s0.070.130.290.080.10 tetrahydrofuran CH2m 1.85 1.79 1.76 1.40 1.80 1.87 1.88 CH2O m 3.76 3.63 3.60 3.57 3.64 3.71 3.74 toluene CH3s 2.36 2.32 2.30 2.11 2.33 2.32CH(o/p)m7.177.1-7.27.187.027.1-7.37.16CH(m)m7.257.1-7.27.257.137.1-7.37.16 triethylamine CH3t,7 1.030.960.930.960.96 1.050.99 CH2q,7 2.53 2.45 2.43 2.40 2.45 2.58 2.57a In these solvents the intermolecular rate of exchange is slow enough that a peak due to HDO is usually also observed;it appears at2.81and3.30ppm in acetone and DMSO,respectively.In the former solvent,it is often seen as a1:1:1triplet,with2J H,D)1Hz. b2,6-Dimethyl-4-tert-butylphenol.c The signals from exchangeable protons were not always identified.d In some cases(see note a),the coupling interaction between the CH2and the OH protons may be observed(J)5Hz).e In CD3CN,the OH proton was seen as a multiplet atδ2.69,and extra coupling was also apparent on the methylene peak.f Long-chain,linear aliphatic hydrocarbons.Their solubility in DMSO was too low to give visible peaks.g Hexamethylphosphoramide.h In some cases(see notes a,d),the coupling interaction between the CH3and the OH protons may be observed(J)5.5Hz).i Poly(dimethylsiloxane).Its solubility in DMSO was too low to give visible peaks.show their degree of variability.Occasionally,in order ambiguous,a further12L of a specific substrate wereTable2.13C NMR Data aCDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent signals77.16(0.0629.84(0.0139.52(0.06128.06(0.02 1.32(0.0249.00(0.01206.26(0.13118.26(0.02acetic acid CO175.99172.31171.93175.82173.21175.11177.21 CH320.8120.5120.9520.3720.7320.5621.03 acetone CO207.07205.87206.31204.43207.43209.67215.94 CH330.9230.6030.5630.1430.9130.6730.89 acetonitrile CN116.43117.60117.91116.02118.26118.06119.68 CH3 1.89 1.12 1.030.20 1.790.85 1.47 benzene CH128.37129.15128.30128.62129.32129.34tert-butyl alcohol C69.1568.1366.8868.1968.7469.4070.36 CH331.2530.7230.3830.4730.6830.9130.29 tert-butyl methyl ether OCH349.4549.3548.7049.1949.5249.6649.37 C72.8772.8172.0472.4073.1774.3275.62C C H326.9927.2426.7927.0927.2827.2226.60 BHT C(1)151.55152.51151.47152.05152.42152.85C(2)135.87138.19139.12136.08138.13139.09CH(3)125.55129.05127.97128.52129.61129.49C(4)128.27126.03124.85125.83126.38126.11CH3Ar21.2021.3120.9721.4021.2321.38C H3C30.3331.6131.2531.3431.5031.15C34.2535.0034.3334.3535.0535.36chloroform CH77.3679.1979.1677.7979.1779.44cyclohexane CH226.9427.5126.3327.2327.6327.961,2-dichloroethane CH243.5045.2545.0243.5945.5445.11 dichloromethane CH253.5254.9554.8453.4655.3254.78diethyl ether CH315.2015.7815.1215.4615.6315.4614.77 CH265.9166.1262.0565.9466.3266.8866.42 diglyme CH359.0158.7757.9858.6658.9059.0658.67 CH270.5171.0369.5470.8770.9971.3370.05CH271.9072.6371.2572.3572.6372.9271.63 1,2-dimethoxyethane CH359.0858.4558.0158.6858.8959.0658.67 CH271.8472.4717.0772.2172.4772.7271.49 dimethylacetamide CH321.5321.5121.2921.1621.7621.3221.09 CO171.07170.61169.54169.95171.31173.32174.57NCH335.2834.8937.3834.6735.1735.5035.03NCH338.1337.9234.4237.0338.2638.4338.76 dimethylformamide CH162.62162.79162.29162.13163.31164.73165.53 CH336.5036.1535.7335.2536.5736.8937.54CH331.4531.0330.7330.7231.3231.6132.03 dimethyl sulfoxide CH340.7641.2340.4540.0341.3140.4539.39 dioxane CH267.1467.6066.3667.1667.7268.1167.19 ethanol CH318.4118.8918.5118.7218.8018.4017.47 CH258.2857.7256.0757.8657.9658.2658.05 ethyl acetate C H3CO21.0420.8320.6820.5621.1620.8821.15 CO171.36170.96170.31170.44171.68172.89175.26CH260.4960.5659.7460.2160.9861.5062.32CH314.1914.5014.4014.1914.5414.4913.92 ethyl methyl ketone C H3CO29.4929.3029.2628.5629.6029.3929.49 CO209.56208.30208.72206.55209.88212.16218.43C H2CH336.8936.7535.8336.3637.0937.3437.27CH2C H37.868.037.617.918.148.097.87 ethylene glycol CH263.7964.2662.7664.3464.2264.3063.17“grease”CH229.7630.7329.2030.2130.8631.29n-hexane CH314.1414.3413.8814.3214.4314.45CH2(2)22.7023.2822.0523.0423.4023.68CH2(3)31.6432.3030.9531.9632.3632.73HMPA b CH336.8737.0436.4236.8837.1037.0036.46 methanol CH350.4149.7748.5949.9749.9049.8649.50c nitromethane CH362.5063.2163.2861.1663.6663.0863.22 n-pentane CH314.0814.2913.2814.2514.3714.39CH2(2)22.3822.9821.7022.7223.0823.38CH2(3)34.1634.8333.4834.4534.8935.302-propanol CH325.1425.6725.4325.1825.5525.2724.38 CH64.5063.8564.9264.2364.3064.7164.88 pyridine CH(2)149.90150.67149.58150.27150.76150.07149.18 CH(3)123.75124.57123.84123.58127.76125.53125.12CH(4)135.96136.56136.05135.28136.89138.35138.27 silicone grease CH3 1.04 1.40 1.38 2.10 tetrahydrofuran CH225.6226.1525.1425.7226.2726.4825.67 CH2O67.9768.0767.0367.8068.3368.8368.68 toluene CH321.4621.4620.9921.1021.5021.50C(i)137.89138.48137.35137.91138.90138.85CH(o)129.07129.76128.88129.33129.94129.91CH(m)128.26129.03128.18128.56129.23129.20CH(p)125.33126.12125.29125.68126.28126.29triethylamine CH311.6112.4911.7412.3512.3811.099.07 CH246.2547.0745.7446.7747.1046.9647.19 a See footnotes for Table1.b2J PC)3Hz.c Reference material;see text.。
show their degree of variability.Occasionally,in order to distinguish between peaks whose assignment was ambiguous,a further1-2µL of a specific substrate were added and the spectra run again.Table1.1H NMR Dataproton mult CDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent residual peak7.26 2.05 2.507.16 1.94 3.31 4.79 H2O s 1.56 2.84a 3.33a0.40 2.13 4.87acetic acid CH3s 2.10 1.96 1.91 1.55 1.96 1.99 2.08 acetone CH3s 2.17 2.09 2.09 1.55 2.08 2.15 2.22 acetonitrile CH3s 2.10 2.05 2.07 1.55 1.96 2.03 2.06 benzene CH s7.367.367.377.157.377.33tert-butyl alcohol CH3s 1.28 1.18 1.11 1.05 1.16 1.40 1.24 OH c s 4.19 1.55 2.18tert-butyl methyl ether CCH3s 1.19 1.13 1.11 1.07 1.14 1.15 1.21 OCH3s 3.22 3.13 3.08 3.04 3.13 3.20 3.22 BHT b ArH s 6.98 6.96 6.877.05 6.97 6.92OH c s 5.01 6.65 4.79 5.20ArCH3s 2.27 2.22 2.18 2.24 2.22 2.21ArC(CH3)3s 1.43 1.41 1.36 1.38 1.39 1.40chloroform CH s7.268.028.32 6.157.587.90 cyclohexane CH2s 1.43 1.43 1.40 1.40 1.44 1.451,2-dichloroethane CH2s 3.73 3.87 3.90 2.90 3.81 3.78 dichloromethane CH2s 5.30 5.63 5.76 4.27 5.44 5.49diethyl ether CH3t,7 1.21 1.11 1.09 1.11 1.12 1.18 1.17 CH2q,7 3.48 3.41 3.38 3.26 3.42 3.49 3.56 diglyme CH2m 3.65 3.56 3.51 3.46 3.53 3.61 3.67 CH2m 3.57 3.47 3.38 3.34 3.45 3.58 3.61OCH3s 3.39 3.28 3.24 3.11 3.29 3.35 3.37 1,2-dimethoxyethane CH3s 3.40 3.28 3.24 3.12 3.28 3.35 3.37 CH2s 3.55 3.46 3.43 3.33 3.45 3.52 3.60 dimethylacetamide CH3CO s 2.09 1.97 1.96 1.60 1.97 2.07 2.08 NCH3s 3.02 3.00 2.94 2.57 2.96 3.31 3.06NCH3s 2.94 2.83 2.78 2.05 2.83 2.92 2.90 dimethylformamide CH s8.027.967.957.637.927.977.92 CH3s 2.96 2.94 2.89 2.36 2.89 2.99 3.01CH3s 2.88 2.78 2.73 1.86 2.77 2.86 2.85 dimethyl sulfoxide CH3s 2.62 2.52 2.54 1.68 2.50 2.65 2.71 dioxane CH2s 3.71 3.59 3.57 3.35 3.60 3.66 3.75 ethanol CH3t,7 1.25 1.12 1.060.96 1.12 1.19 1.17 CH2q,7d 3.72 3.57 3.44 3.34 3.54 3.60 3.65OH s c,d 1.32 3.39 4.63 2.47ethyl acetate CH3CO s 2.05 1.97 1.99 1.65 1.97 2.01 2.07C H2CH3q,7 4.12 4.05 4.03 3.89 4.06 4.09 4.14CH2C H3t,7 1.26 1.20 1.170.92 1.20 1.24 1.24 ethyl methyl ketone CH3CO s 2.14 2.07 2.07 1.58 2.06 2.12 2.19C H2CH3q,7 2.46 2.45 2.43 1.81 2.43 2.50 3.18CH2C H3t,7 1.060.960.910.850.96 1.01 1.26 ethylene glycol CH s e 3.76 3.28 3.34 3.41 3.51 3.59 3.65“grease”f CH3m0.860.870.920.860.88CH2br s 1.26 1.29 1.36 1.27 1.29n-hexane CH3t0.880.880.860.890.890.90CH2m 1.26 1.28 1.25 1.24 1.28 1.29HMPA g CH3d,9.5 2.65 2.59 2.53 2.40 2.57 2.64 2.61 methanol CH3s h 3.49 3.31 3.16 3.07 3.28 3.34 3.34 OH s c,h 1.09 3.12 4.01 2.16nitromethane CH3s 4.33 4.43 4.42 2.94 4.31 4.34 4.40 n-pentane CH3t,70.880.880.860.870.890.90CH2m 1.27 1.27 1.27 1.23 1.29 1.292-propanol CH3d,6 1.22 1.10 1.040.95 1.09 1.50 1.17 CH sep,6 4.04 3.90 3.78 3.67 3.87 3.92 4.02 pyridine CH(2)m8.628.588.588.538.578.538.52 CH(3)m7.297.357.39 6.667.337.447.45CH(4)m7.687.767.79 6.987.737.857.87 silicone grease i CH3s0.070.130.290.080.10 tetrahydrofuran CH2m 1.85 1.79 1.76 1.40 1.80 1.87 1.88 CH2O m 3.76 3.63 3.60 3.57 3.64 3.71 3.74 toluene CH3s 2.36 2.32 2.30 2.11 2.33 2.32CH(o/p)m7.177.1-7.27.187.027.1-7.37.16CH(m)m7.257.1-7.27.257.137.1-7.37.16 triethylamine CH3t,7 1.030.960.930.960.96 1.050.99 CH2q,7 2.53 2.45 2.43 2.40 2.45 2.58 2.57a In these solvents the intermolecular rate of exchange is slow enough that a peak due to HDO is usually also observed;it appears at2.81and3.30ppm in acetone and DMSO,respectively.In the former solvent,it is often seen as a1:1:1triplet,with2J H,D)1Hz. b2,6-Dimethyl-4-tert-butylphenol.c The signals from exchangeable protons were not always identified.d In some cases(see note a),the coupling interaction between the CH2and the OH protons may be observed(J)5Hz).e In CD3CN,the OH proton was seen as a multiplet atδ2.69,and extra coupling was also apparent on the methylene peak.f Long-chain,linear aliphatic hydrocarbons.Their solubility in DMSO was too low to give visible peaks.g Hexamethylphosphoramide.h In some cases(see notes a,d),the coupling interaction between the CH3and the OH protons may be observed(J)5.5Hz).i Poly(dimethylsiloxane).Its solubility in DMSO was too low to give visible peaks.Notes .Chem.,Vol.62,No.21,19977513.Chem.,Vol.62,No.21,1997NotesTable2.13C NMR Data aCDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent signals77.16(0.0629.84(0.0139.52(0.06128.06(0.02 1.32(0.0249.00(0.01206.26(0.13118.26(0.02acetic acid CO175.99172.31171.93175.82173.21175.11177.21 CH320.8120.5120.9520.3720.7320.5621.03 acetone CO207.07205.87206.31204.43207.43209.67215.94 CH330.9230.6030.5630.1430.9130.6730.89 acetonitrile CN116.43117.60117.91116.02118.26118.06119.68 CH3 1.89 1.12 1.030.20 1.790.85 1.47 benzene CH128.37129.15128.30128.62129.32129.34tert-butyl alcohol C69.1568.1366.8868.1968.7469.4070.36 CH331.2530.7230.3830.4730.6830.9130.29 tert-butyl methyl ether OCH349.4549.3548.7049.1949.5249.6649.37 C72.8772.8172.0472.4073.1774.3275.62C C H326.9927.2426.7927.0927.2827.2226.60 BHT C(1)151.55152.51151.47152.05152.42152.85C(2)135.87138.19139.12136.08138.13139.09CH(3)125.55129.05127.97128.52129.61129.49C(4)128.27126.03124.85125.83126.38126.11CH3Ar21.2021.3120.9721.4021.2321.38C H3C30.3331.6131.2531.3431.5031.15C34.2535.0034.3334.3535.0535.36chloroform CH77.3679.1979.1677.7979.1779.44cyclohexane CH226.9427.5126.3327.2327.6327.961,2-dichloroethane CH243.5045.2545.0243.5945.5445.11 dichloromethane CH253.5254.9554.8453.4655.3254.78diethyl ether CH315.2015.7815.1215.4615.6315.4614.77 CH265.9166.1262.0565.9466.3266.8866.42 diglyme CH359.0158.7757.9858.6658.9059.0658.67 CH270.5171.0369.5470.8770.9971.3370.05CH271.9072.6371.2572.3572.6372.9271.63 1,2-dimethoxyethane CH359.0858.4558.0158.6858.8959.0658.67 CH271.8472.4717.0772.2172.4772.7271.49 dimethylacetamide CH321.5321.5121.2921.1621.7621.3221.09 CO171.07170.61169.54169.95171.31173.32174.57NCH335.2834.8937.3834.6735.1735.5035.03NCH338.1337.9234.4237.0338.2638.4338.76 dimethylformamide CH162.62162.79162.29162.13163.31164.73165.53 CH336.5036.1535.7335.2536.5736.8937.54CH331.4531.0330.7330.7231.3231.6132.03 dimethyl sulfoxide CH340.7641.2340.4540.0341.3140.4539.39 dioxane CH267.1467.6066.3667.1667.7268.1167.19 ethanol CH318.4118.8918.5118.7218.8018.4017.47 CH258.2857.7256.0757.8657.9658.2658.05 ethyl acetate C H3CO21.0420.8320.6820.5621.1620.8821.15 CO171.36170.96170.31170.44171.68172.89175.26CH260.4960.5659.7460.2160.9861.5062.32CH314.1914.5014.4014.1914.5414.4913.92 ethyl methyl ketone C H3CO29.4929.3029.2628.5629.6029.3929.49 CO209.56208.30208.72206.55209.88212.16218.43C H2CH336.8936.7535.8336.3637.0937.3437.27CH2C H37.868.037.617.918.148.097.87 ethylene glycol CH263.7964.2662.7664.3464.2264.3063.17“grease”CH229.7630.7329.2030.2130.8631.29n-hexane CH314.1414.3413.8814.3214.4314.45CH2(2)22.7023.2822.0523.0423.4023.68CH2(3)31.6432.3030.9531.9632.3632.73HMPA b CH336.8737.0436.4236.8837.1037.0036.46 methanol CH350.4149.7748.5949.9749.9049.8649.50c nitromethane CH362.5063.2163.2861.1663.6663.0863.22 n-pentane CH314.0814.2913.2814.2514.3714.39CH2(2)22.3822.9821.7022.7223.0823.38CH2(3)34.1634.8333.4834.4534.8935.302-propanol CH325.1425.6725.4325.1825.5525.2724.38 CH64.5063.8564.9264.2364.3064.7164.88 pyridine CH(2)149.90150.67149.58150.27150.76150.07149.18 CH(3)123.75124.57123.84123.58127.76125.53125.12CH(4)135.96136.56136.05135.28136.89138.35138.27 silicone grease CH3 1.04 1.40 1.38 2.10 tetrahydrofuran CH225.6226.1525.1425.7226.2726.4825.67 CH2O67.9768.0767.0367.8068.3368.8368.68 toluene CH321.4621.4620.9921.1021.5021.50C(i)137.89138.48137.35137.91138.90138.85CH(o)129.07129.76128.88129.33129.94129.91CH(m)128.26129.03128.18128.56129.23129.20CH(p)125.33126.12125.29125.68126.28126.29triethylamine CH311.6112.4911.7412.3512.3811.099.07 CH246.2547.0745.7446.7747.1046.9647.19a See footnotes for Table1.b2J PC)3Hz.c Reference material;see text.。
在核磁共振(NMR)氢谱中,溶剂通常会产生一些特征性的峰。
这些峰是由于溶剂分子中氢原子的存在,它们在谱图中产生信号。
以下是一些常见的核磁氢谱中的一些常见溶剂峰:
1. **氘气体(D2):**
-信号通常在0 ppm左右。
2. **氘氧(D2O):**
-信号通常在3.3 ppm左右。
3. **二氯甲烷(CD2Cl2):**
-信号通常在5.3 ppm左右。
4. **氯仿(CDCl3):**
-信号通常在7.26 ppm左右。
5. **乙腈(CD3CN):**
-信号通常在1.94 ppm左右。
6. **二甲基硫醚((CD3)2SO):**
-信号通常在2.50 ppm左右。
这些峰的位置可以作为内部标准,用于校正样品中氢谱峰的位置。
注意,这些值可能会有一些变化,具体取决于实验条件和仪器参数。
在解释核磁氢谱时,了解溶剂峰的位置是很有用的,因为它可以帮助识别样品中的峰。