Spectroscopy IR Values
Terms
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- C - - - N
-
2210-2260
medium
nitrile - R-C=O-OH (O-H)
-
2500-3100
STRONG AND VERY BROAD
CARBOXYLIC ACID - C=O
-
1680-1750
STRONG, VERY BROAD
CARBONYL - C6H5 (BENZENE RING)
-
1500,1600
WEAK
AROMATIC RING - O-H
-
3400-3650
STRONG,BROAD
ALCOHOL - C=C
-
1640-1680
MEDIUM
ALKENE - C-H
-
2850-2960
STRONG
ALKANE - N-H
-
3300-3500
STRONG
AMINE - NO2
-
1540
STRONG
NITRO - RCO2R' (ESTER)
-
1735
STRONG
ESTER - RCOCl (ACID CHLORIDE)
-
1800
STRONG
ACID CHLORIDE - ACID ANHYDRIDE
-
STRONG
1800
ANHYDRIDE
(2 BONDS) - RCHO (ALDEHYDE)
-
1725
STRONG
ALDEHYDE - RCOR' (KETONE)
-
1715
STRONG
KETONE - RCONH2 (AMIDE)
-
1650
STRONG
AMIDE - BENZENE RING + H
-
3030
WEAK
AROMATIC - C-O
-
1050-1150
STRONG
ALCOHOL - - - - C-H
-
3300
STRONG
ALKYNE - -C- - -C -
-
2100-2260
MEDIUM
ALKYNE - C-Cl
-
600-800
STRONG
ALKYL HALIDE - C-Br
-
500-600
STRONG
ALKYL HALIDE - C-I
-
500
STRONG
ALKYL HALIDE - =C-H
-
3020-3100
MEDIUM
ALKENE - FINGERPRINT REGION
- <1500
- CH3, CH2
- 1300-1500
- C=O, C=N, C=C
- 1500-2000
- C---N, C---C
- 2000-2500
- N-H, O-H, C-H
- 2500-4000