spec b graphs Flashcards
1
Q
Csp^3-H
A
3000-2850
2
Q
Csp^2-H
A
3150-3000
3
Q
C=C, double bond
A
1650
4
Q
triple bond
A
~2250
5
Q
benzene ring
A
1600, 1500
6
Q
alcohols
A
big loop 3600-3200
7
Q
ethers
A
no absorptions above 1500 except C-H at ~3000
8
Q
aldehydes
A
C=O ~1700
Csp^2-H of aldehyde, C-H at 2830-2700
9
Q
ketones
A
C=O ~1700
10
Q
carboxylic acids
A
O-H 3500-2500
C=O ~1710
almost obscures C-H peak at ~3000
11
Q
amides
A
N-H 3400-3200
C=O 1680-1630
N-H bending absorption at 1640
12
Q
esters
A
C=O ~1745-1735
13
Q
amines
A
N-H (one or two peaks) at 3500-3300
14
Q
nitriles
A
C triple bonded to N ~2250
