红外谱图-各官能团的特征吸收是谱图的基础
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CH3
例9:
1） 800 对位取代
CH3
CH2CH3
例10 : 1） 不：0 2）3340， 1100 醇 3）借助其它方法
CH3CH2 CH CH3 OH
例11: 1）不：4 2）3000，1600，1500 苯 3）3300（×），1250，1050
芳香脂肪醚
4）750，邻位取代
OCH3 CH3
3）1710 cm1，C=O，
2820，2720 cm1，醛基
1）不饱和度：(8228)2=5
大于4， 一般有苯环，C6H5
4）结合化合物的分子式 此化合物为间甲基苯甲醛
2）3000 cm1以上，不饱和 C-H 伸缩
CH3
可能为烯，炔，芳香化合物
1600，1580 cm1，含有苯环
指纹区780，690 cm1，间位取代苯
CH C CH2OH
例3 C7H8O 1) 不饱和度： (7228)2=4 可能含有苯环
2) 3000 cm1 以上， 以及 1600，1500 cm1 表明含有苯环（-C6H5 770，700 cm1 表明苯环取代为单取代
3) 分子式为C7H8O，除去苯环(-C6H5)，取代基为CH3O， 苯甲醚(?) 苯甲醇(?) 3300 cm1()，1250，1040 cm1() 芳香脂肪醚C-O的吸收 表明此化合物为苯甲醚
LASER
SAMPLE
eE
SPECTROMETER
拉曼光谱技术具有非破坏性、几乎不需要样品制备， 可直接测定气体、液体和固体样品，并且可用水作 溶剂，因此在含水溶液、不饱和碳氢化合物、药品、 聚合物结构、生物和无机物质等的分析方面比红外 光谱分析法优越。
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fE%h G*jI(lK-nM0p N2rP4sR6u
(3) 若在稍高于 3000 cm1有吸收, 则应在 2250 ~ 1450 cm1 频区 分析不饱和碳碳键的伸缩振动吸收特征峰
炔 2200 ~ 2100 cm1 烯 1680 ~ 1640 cm1 芳环 1600,1580,1500,1450 cm1
例9:
1） 800 对位取代
CH3
CH2CH3
例10 : 1） 不：0 2）3340， 1100 醇 3）借助其它方法
CH3CH2 CH CH3 OH
例11: 1）不：4 2）3000，1600，1500 苯 3）3300（×），1250，1050
芳香脂肪醚
4）750，邻位取代
OCH3 CH3
3）1710 cm1，C=O，
2820，2720 cm1，醛基
1）不饱和度：(8228)2=5
大于4， 一般有苯环，C6H5
4）结合化合物的分子式 此化合物为间甲基苯甲醛
2）3000 cm1以上，不饱和 C-H 伸缩
CH3
可能为烯，炔，芳香化合物
1600，1580 cm1，含有苯环
指纹区780，690 cm1，间位取代苯
CH C CH2OH
例3 C7H8O 1) 不饱和度： (7228)2=4 可能含有苯环
2) 3000 cm1 以上， 以及 1600，1500 cm1 表明含有苯环（-C6H5 770，700 cm1 表明苯环取代为单取代
3) 分子式为C7H8O，除去苯环(-C6H5)，取代基为CH3O， 苯甲醚(?) 苯甲醇(?) 3300 cm1()，1250，1040 cm1() 芳香脂肪醚C-O的吸收 表明此化合物为苯甲醚
LASER
SAMPLE
eE
SPECTROMETER
拉曼光谱技术具有非破坏性、几乎不需要样品制备， 可直接测定气体、液体和固体样品，并且可用水作 溶剂，因此在含水溶液、不饱和碳氢化合物、药品、 聚合物结构、生物和无机物质等的分析方面比红外 光谱分析法优越。
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(3) 若在稍高于 3000 cm1有吸收, 则应在 2250 ~ 1450 cm1 频区 分析不饱和碳碳键的伸缩振动吸收特征峰
炔 2200 ~ 2100 cm1 烯 1680 ~ 1640 cm1 芳环 1600,1580,1500,1450 cm1