1、主要基團的紅外特征吸收峰基團振動類型波數（cm-1）波長（m）強 度 備 注一、烷烴類CH伸CH伸（反稱）CH伸（對稱）CH彎（面內）C-C伸30002843297228802882284314901350125011403.333.523.373.473.493.526.717.418.008.77中、強中、強中、強分為反稱與對稱二、烯烴類CH伸CC伸CH彎（面內）CH彎（面外）單取代雙取代順式反式31003000169516301430129010106509959859109057306509809653.233.335.906.137.007.759.9015.410.0510.151

2、0.9911.0513.7015.3810.2010.36中、弱中強強強強強CCC為20001925 cm-1三、炔烴類CH伸CC 伸CH彎（面內）CH彎（面外）330022702100126012456456153.034.414.767.948.0315.5016.25中中強四、取代苯類CH伸泛頻峰骨架振動（）CH彎（面內）CH彎（面外）3100300020001667160020150025158010145020125010009106653.233.335.006.006.250.086.670.106.330.046.900.108.0010.0010.9915.03變弱強三、四個

3、峰，特征確定取代位置單取代鄰雙取代間雙取代對雙取代1,2,3,三取代1,3,5,三取代1,2,4,三取代1,2,3,4四取代1,2,4,5四取代1, 2,3,5四取代五取代CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）CH彎（面外）77073077073081075090086086080081075087483588586086080086080086080086581086012.9913.7012.9913.7012.3513.3311.1211.6311.6312.5012.3513.3311

4、.4411.9811.3011.6311.6312.5011.6312.5011.6312.5011.5612.3511.63極強極強極強中極強強強中強強強強強五個相鄰氫四個相鄰氫三個相鄰氫一個氫（次要）二個相鄰氫三個相鄰氫與間雙易混一個氫一個氫二個相鄰氫二個相鄰氫一個氫一個氫一個氫五、醇類、酚類OH伸OH彎（面內）CO伸OH彎（面外）3700320014101260126010007506502.703.137.097.937.9410.0013.3315.38變弱強強液態有此峰OH伸縮頻率游離OH分子間氫鍵分子內氫鍵OH彎或CO伸伯醇（飽和）仲醇（飽和）叔醇（飽和）酚類（OH）OH伸OH伸

5、OH伸（單橋）OH彎（面內）CO伸OH彎（面內）CO伸OH彎（面內）CO伸OH彎（面內）O伸36503590350033003570345014001250100014001125100014001210110013901330126011802.742.792.863.032.802.907.148.0010.007.148.8910.007.148.269.097.207.527.948.47強強強強強強強強強中強銳峰鈍峰（稀釋向低頻移動*）鈍峰（稀釋無影響）六、醚類COC伸127010107.879.90強或標CO伸脂鏈醚脂環醚芳醚（氧與芳環相連）COC伸COC伸（反稱）COC伸（對稱）

6、COC伸（反稱）COC伸（對稱）CH伸1225106011001030980900127012301050100028258.169.439.099.7110.2011.117.878.139.5210.003.53強強強強中弱氧與側鏈碳相連的芳醚同脂醚OCH3的特征峰七、醛類（CHO）CH伸CO伸CH彎（面外）28502710175516659757803.513.695.706.0010.212.80弱很強中一般2820及2720cm-1兩個帶飽和脂肪醛，-不飽和醛芳醛CO伸CO伸CO伸1725168516955.805.935.90強強強八、酮類CO伸CC伸泛頻1700163012501

7、030351033905.786.138.009.702.852.95極強弱很弱脂酮飽和鏈狀酮，-不飽和酮二酮芳酮類ArCOCO伸CO伸CO伸CO伸CO伸17251705169016751640154017001630169016805.805.865.925.976.106.495.886.145.925.95強強強強強CO與CC共軛向低頻移動譜帶較寬二芳基酮1-酮基-2-羥基（或氨基）芳酮脂環酮四環元酮五元環酮六元、七元環酮CO伸CO伸CO伸CO伸CO伸1670166016651635177517501740174517255.996.026.016.125.635.715.755.735

8、.80強強強強強九、羧酸類（COOH）OH伸CO伸OH彎（面內）CO伸OH彎（面外）3400250017401650143013009509002.944.005.756.066.997.6910.5311.11中強弱中弱在稀溶液中，單體酸為銳峰在3350cm-1；二聚體為寬峰，以3000cm-1為中心脂肪酸RCOOH，-不飽和酸芳酸CO伸CO伸CO伸1725170017051690170016505.805.885.875.915.886.06強強強氫鍵十、酸酐鏈酸酐CO伸（反稱）CO伸（對稱）CO伸1850180017801740117010505.415.565.625.758.559.

9、52強強強共軛時每個譜帶降20 cm-1環酸酐（五元環）CO伸（反稱）CO伸（對稱）CO伸1870182018001750130012005.355.495.565.717.698.33強強強共軛時每個譜帶降20cm-1十一、酯類CO伸（泛頻）CO伸COC伸345017701720128011002.905.655.817.819.09弱強強多數酯CO伸縮振動正常飽和酯，-不飽和酯-內酯-內酯（飽和）-內酯CO伸CO伸CO伸CO伸CO伸174417391720175017351780176018205.735.755.815.715.765.625.685.50強強強強強十二、胺NH伸NH彎（

10、面內）CN伸NH彎（面外）3500330016501550134010209006502.863.036.066.457.469.8011.115.4中中強伯胺強，中；仲胺極弱伯胺類仲胺類叔胺類NH伸（反稱、對稱）NH彎（面內）CN伸NH伸NH彎（面內）CN伸CN伸（芳香）350034001650159013401020350033001650155013501020136010202.862.946.066.297.469.802.863.036.066.457.419.807.359.80中、中強、中中、弱中極弱中、弱中、弱雙峰一個峰十三、酰胺（脂肪與芳香酰胺數據類似）NH伸CO伸NH彎（

11、面內）CN伸350031001680163016401550142014002.863.225.956.136.106.457.047.14強強強中伯酰胺雙峰仲酰胺單峰譜帶譜帶譜帶伯酰胺仲酰胺叔酰胺NH伸 （反稱）（對稱）CO伸NH彎（剪式）CN伸NH2面內搖NH2面外搖NH伸CO伸NH彎+CN伸CN伸+NH彎CO伸3350318016801650165016201420140011507506003270168016301570151513101200167016302.983.145.956.066.066.157.047.148.701.331.673.095.956.136.376.607.638.335.996.13強強強強中弱中強強中中兩峰重合兩峰重合十四、氰類化合物脂肪族氰、芳香氰、不飽和氰C