IR Stretching frequencies
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18 Terms
1
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Frequency 3300
Alcohol
Amine and Amide
Alkyne
2
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Alcohol at 3300
always broad
O-H
3
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Amine and amide at 3300
may be broad, sharp or broad with spikes
N-H
4
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Alkyne at 3000
always sharp, usually strong
triplebondC-H
5
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Frequency 3000
alkane
alkene
acid
6
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alkane at 3000
just below 3000
7
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alkene at 3000
just above 3000
8
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acid at 3000
very broad
O-H
9
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Frequency 2200
alkyne
nitrile
10
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alkyne at 2200
-ctriplebond-c-
just below 2200
11
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nitrile at 2200
-CtriplebondN
Just avove 2200
12
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frequency 1710
Carbonyl
13
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Ketones and acids
1710
14
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aldehydes
1725
15
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esters
1735
16
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Frequency 1660
Alkene
imine
amide
17
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alkene at 1660
conjugation lowers frequency
18
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imine at 1660
stromger than cdouble bondc
Note 
Flashcards (44)