波谱解析习题集答案

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1、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.IRanswer：Thebandat1716indicatesacarbonyl,pr

2、obablyaketone.Thebandsat3000-2850indicateC-Halkanestretches.4.IRanswer：Thebandat1718indicatesacarbonyl,probablyaketone.Thebandsat3000-2850indicateC-Halkanestretches.5.IRanswer:Thebroadbandat3339indicatesO-Hstretch,probablyanalcohol.Thebandsat3000-2850indicateC-Halkanestretches.T

3、hebandat1041isC-Ostretch,consistentwithanalcohol.6.IRanswer:Thebroadbandat3350indicatesO-Hstretch,probablyanalcohol.Thebandsat3000-2850indicateC-Halkanestretches.Thebandsfrom1320-1000indicateC-Ostretch,consistentwithanalcohol.7.IRanswer:Thebandat1743indicatesacarbonyl,probablyas

4、aturatedaliphaticester.Thebandsat3000-2850indicateC-Halkanestretches.Thebandsintheregion1320-1000couldbeduetoC-Ostretch,consistentwithanester.8.IRanswer:Thebandat1740indicatesacarbonyl,probablyasaturatedaliphaticester.Thebandsat3000-2850indicateC-Halkanestretches.Thebandsinthere

5、gion1320-1000couldbeduetoC-Ostretch,consistentwithanester.9.IRanswer:Thebandat1728indicatesacarbonyl,probablyanaldehyde;analdehydeisalsosuggestedbythebandat2719whichislikelytheC-HstretchoftheH-C=Ogroup.Thebandsat3000-2850indicateC-Halkanestretches.10.IRanswer:Thebandat1703indica

6、tesacarbonyl;thatthecarbonylisanaldehydeissuggestedbythebandsat2828and2733(C-HstretchoftheH-C=Ogroup).Thebandsat3000-2850indicateC-Halkanestretches.Theband(unmarkedonthegraphbelow)justtotheleftof3000indicatesaromaticC-Hstretch.Aromaticsalsoshowbandsintheregions1600-1585and1500-1

7、400(C-Cin-ringstretch),and900-675(C-Hout-of-plane).11.IRanswer:Thebandat1697indicatesanalpha,beta-unsaturatedcarbonyl;thatthecarbonylisanaldehydeissuggestedbythebandsat2828and2739(C-HstretchoftheH-C=Ogroup).Thebandsat3000-2850indicateC-Halkanestretches.Theband(unmarkedonthegraph

8、below)justtotheleftof3000indicatesaromaticC-Hst