红外光谱各基团出峰位置和特征

基团振动形式吸收峰位（cm-1)强度饱和烃基-CH3asCH2692±10SsCH2872±10SasCH1450±10MsCH1380~1370S-CH2-asCH2926±5SsCH2853±10SCH1465±20m-CH-sCH2890±10wCH~1340w-(CH2)n-CH2的CH~720w不饱和烃基C=CC-H伸缩振动1650~1640RCH=CH2=C-H弯曲振动990和910RCH=CHR′(顺式)=C-H弯曲振动730~675RCH=CHR′(反式)=C-H弯曲振动970~960R2C=CH2=C-H弯曲振动880R2C=CHR=C-H弯曲振动840~800伸缩振动2250~2100伸缩振动3300苯C=CasC=C1650~1450m~s=C-HCH3100~3000m苯(邻接六个H)CH675s一取代苯(邻接五个H)CH770～730s710～690s邻二取代苯(邻接四个H)CH770～730s对二取代苯(邻接二个H)CH860～800s间二取代苯(邻接三个H)CH810～750s725～680m五取代（孤H）CH870s1，3，5三取代（孤H）CH865～810s730～675s羟基OHOH（游离）3600m（尖）OH（締合）3300s（宽）C-OH（伯醇）C-O1050s（宽）C-OH（仲醇）C-O1100s（宽）C-OH（叔醇）C-O1150s（宽）C-OH（酚）C-O1200~1300s（宽）醚R-O-R’asc-o-c1210~1050s（不特征）Ar-O-Rasc-o-c1300~1200s（不特征）Ar-O-Rsc-o-c1055~1000m（不特征）R-OCH3sCH32830~2815msAr-OCH3sCH32850s（宽）羰基酮(RCOR’)C=O1720~1715VS（很特征）醛(RCHO)C=O1740~1720SCH2900~2700w(一般两个峰）酯(COOR’)C=O1750~1735SC-O-C1300~1000S(一般两个峰）羧基羧酸(RCOOH)C=O1720~1715VS（很特征）O-H3300~2500m（峰很宽，特征）O-H955~915较特征酸酐(RCO)2OC=O1880~1800SC-O-C1800~1750S1170~1050S酰胺(RCONH2)C=O1690~1650S（酰胺Ⅰ峰）N-H3500~3050mN-H1650~1620m（酰胺Ⅱ峰）硝基R-NO2asNO21560~1545sR-NO2sNO21385~1350sR-NO2sC-N920~830wAr-NO2asNO21550~1510sAr-NO2sNO21365~1300sAr-NO2sC-N880~845w