波谱解析习题集答案波谱解析习题答案1. 请将化合物与相应的IR谱图一一对应，并鉴别其特征峰 1.1.A. 二苯乙烯B. 1，3-环己二烯C. 2-戊烯D. 辛烯1.2. E. 乙酸乙酯 F. 十二烷酸 G. 丙酸钠 H. 丁酰胺 I. 异丁胺 1.3. J. 间甲苯甲酸 K. 邻甲酚 L. 丙烯基苯基醚 M. 苯甲醛1.4. N. 苄胺 O. 偶氮苯 P. 苯甲酮肟 Q. 苯胺 R. 二甲胺盐酸盐2. 由1H-NMR 解析结构，归属信号，标明化学位移、裂分方式、偶合常数等。
2.1. 2.2. 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 2.9. 2.10.3. IR answer：The band at 1716 indicates a carbonyl, probablya ketone. The bands at 3000-2850indicate C-H alkane stretches.4. IR answer：The band at 1718 indicates a carbonyl, probablya ketone. The bands at 3000-2850indicate C-H alkane stretches.5. IR answer: The poad band at 3339 indicates O-H stretch, probably an alcohol. The bands at3000-2850 indicate C-H alkane stretches. The band at 1041 is C-O stretch, consistent with an alcohol.6. IR answer: The poad band at 3350 indicates O-H stretch, probably an alcohol. The bands at 3000-2850 indicate C-H alkane stretches. The bands from 1320-1000 indicate C-O stretch, consistentwith an alcohol.7. IR answer: The band at 1743 indicates a carbonyl, probablya saturated aliphatic ester. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 could be due to C-Ostretch, consistent with an ester.8. IR answer: The band at 1740 indicates a carbonyl, probablya saturated aliphatic ester. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 could be due to C-Ostretch, consistent with an ester.9. IR answer: The band at 1728 indicates a carbonyl, probably an aldehyde; an aldehyde is also suggested by the band at 2719 which is likely the C-H stretch of the H-C=O group. The bands at 3000-2850 indicate C-H alkane stretches.10. IR answer: The band at 1703 indicates a carbonyl; that the carbonyl is an aldehyde is suggested by the bands at 2828 and 2733 (C-H stretch of the H-C=O group). The bands at 3000-2850 indicate C-H alkane stretches. The band (unmarked on the graph below) just to the left of 3000 indicates aromatic C-H stretch. Aromatics also show bands in the regions 1600-1585 and 1500-1400 (C-Cin-ring stretch), and 900-675 (C-H out-of-plane).11. IR answer: The band at 1697 indicates an alpha,beta-unsaturated carbonyl; that the carbonyl is an aldehyde is suggested by the bands at 2828 and 2739 (C-H stretch of the H-C=O group). The bands at 3000-2850 indicate C-H alkane stretches. The band (unmarked on the graph below) just to the left of 3000 indicates aromatic C-H stretch. Aromatics also show bands in the regions 1600-1585and 1500-1400 (C-C in-ring stretch), and 900-675 (C-H out-of-plane).12. IR answer: The band at 1716 indicates a carbonyl. The wide band from 3300-2500ischaracteristic of the O-H stretch of carboxylic acids. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 indicate the C-O stretch ofcarboxylic acids.13. IR answer: The band at 1684 indicates a carbonyl. The wide band from 3300-2500 is characteristic of the O-H stretch of carboxylic acids. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 indicate the C-O stretch of carboxylic acids. The band (unmarked on the graph below) just to the left of 3000 indicates aromatic C-H stretch. Aromatics also show bands in the regions 1600-1585 and1500-1400 (C-C in-ring stretch), and 900-675 (C-Hout-of-plane).14. IR answer: The band at 1684 indicates a carbonyl. The wide band from 3300-2500 is characteristic of the O-H stretch of carboxylic acids. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 indicate the C-O stretch of carboxylic acids. The band just to the left of 3000 (3065) indicates aromatic C-H stretch. Aromatics also show bands in theregions 1600-1585 and 1500-1400 (C-C in-ring stretch), and 900-675 (C-H out-of-plane).15. IR answer: The two bands at 3433 and 3354 indicate a secondary amine. The bands at 3000-2850 indicate C-H alkane stretches. The band at 3034 indicates aromatic C-H stretch; aromatics also show bands in the regions 1600-1585 and1500-1400 (C-C in-ring stretch), and 900-675 (C-Hout-of-plane). C-N stretch of aromatic amines would show up at 1335-1250 (there is a band in thatregion).16. IR answer: The two bands at 3388 and 3292 indicate a secondary amine. The bands at3000-2850 indicate C-H alkane stretches.17. IR answer: The band at 1718 indicates a carbonyl, probably a ketone. The bands at 3000-2850 indicate C-H alkane stretches. Since the pound is an alkene, one would expect to see C=C stretch at 1680-1640; these weak bands are not seen in this IR (aording to Silverstein,single hydrogen must be too weak).18. IR answer: The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1300-1150 could indicate C-H wag (-CH2Br) ofan alkyl halide.19. IR answer: The bands at 3000-2850 indicate C-H alkane stretches; the small (unmarked) band just to the left of 3000 indicates aromatic C-H stretch. Aromatics also show bands in the regions1600-1585 and 1500-1400 (C-C in-ring stretch), and 900-675 (C-H out-of-plane). The wide band inthe region 3500-3200 indicates the O-H stretch ofan alcohol or phenol.20. IR answer: The band at 1682 indicates a carbonyl, probably an ester. The band at 3192 indicates C-H aromatic stretch; aromatics also show bands in the regions 1600-1585 and1500-1400 (C-C in-ring stretch), and 900-675 (C-Hout-of-plane). The wide band just to the left of the 3192 bandindicates O-H stretch (alcohols and phenols).21. IR answer: The bands at 3000-2850 indicate C-H alkane stretches. There really aren"t many other bands in the spectrum to indicate functional groups. The pound is an alkyne; we would expect to see a carbon-carbon triple bond stretch at 2260-2100, however, this is a weak band at best and oftendoes not show up on IR.22. IR answer: The bands at 3000-2850 indicate C-H alkane stretches. The band at 3028 indicates C-H aromatic stretch; aromatics also show bands in the regions 1600-1585 and1500-1400 (C-C in-ring stretch), and 900-675 (C-Hout-of-plane). The bands in the region 1250-1020 could be due to C-N stretch. The weak, poad banc at about 3500 could be amine N-H stretch or it could be a slight contamination ofan impurity (water) in the sample.23. IR answer: The bands at 3000-2850 indicate C-H alkane stretches. The band at 3060 indicates C-H aromatic stretch; aromatics also show bands in the regions 1600-1585 and1500-1400 (C-C in-ring stretch), and 900-675 (C-Hout-of-plane).24. 4-庚酮25. 3-庚醇26. 4-溴甲苯27. 2-溴戊烷28. 2-己酮29. 丙酸30.丁胺31. 炔丙醇32. 1-硝基丙烷33. 2-苯氧基乙醇34. 苯乙醚35.丁酸甲酯36. 己内酰胺37. 2-甲基吡嗪38. 水杨酸甲酯39. 4-硝基氯苯40. 7-溴庚酸41. 5-己炔醇42. 6-甲基-5-庚烯-2-酮43. 己酸44. 2,6-二氯苯酚45. 2,6-二甲基苯酚46. 2-环己烯酮47..49.50.51.52.53.54.55.56.57.58.59.60.61.62.63.64.65.66.67.68.69.70.71.72.73. 暂无 74. 暂无答案75. The elemental position of the M+. is thus C5H4 NBr.76. Answer: nitrobenzene; C6H5NO2.77. Answer: chloroform; CHCl378. Answer: 1,4-diethylbenzene79.Answer: tetrahydropyran80. Answer: n-nonane; C9H20 81. Answer: biphenyl; C10H 1282. Answer: 3-buten-2-one; methyl vinyl ketone83.Answer: 4-methoxypyridine84. Answer: dimethylsulfone; CH3SO2CH385. Answer: 2,6-dichlorophenol; C6H4OCl286. Answer:87. Answer:88.Answer: phenyl-2-propanone89. Answer: (a) n-butanol, (b) methylpropylether, (c) methylisopropylether, (d) isobutyl alcohol, (e) s-butanol, (f) diethylether, and (g) t-butyl alcohol 90. Answer:91. Answer: 3-pyridinecarboxamide (nicotinamide)92. Answer: methyldiethylamine93. Answer: methyl p-hydroxybenzoate94. Answer:95. Answer:96.Answer: (a) 4-hydroxycyclohexene and (b)3-hydroxycyclohexene97. 98. 99. 100.内容仅供参考。
