IR SPECTROSCOPY Flashcards
1
Q
Longest to shortest ito stretch length (12) (Left to right)
A
- O-H (Acid) … 2500-3500
- O-H (Alcohol) … 3400
- N-H … 3300
- Sp C-H … 3300
- Sp2 C-H … Left of 3000
- Sp3 C-H … Right of 3000
- C-H aldehyde … 2700-2800
- C - - - N (triple bond) … 2100-2300
- C - - - C (triple bond) … 2100-2300
- C=O … 1710
- C=C … 1650b
- Benzene … 1500-1600
2
Q
O-H (Acid)
A
2500-3500
3
Q
O-H (Alcohol)
A
3400
4
Q
N-H
A
3300
5
Q
Sp C-H
A
3300
6
Q
Sp2 C-H
A
Left of 3000
7
Q
Sp3 C-H
A
Right of 3000
8
Q
C-H aldehyde
A
2700-2800
9
Q
C - - - N (triple bond)
A
2100-2300
10
Q
C - - - C (triple bond)
A
2100-2300
11
Q
C=O
A
1710
12
Q
C=C
A
1650
13
Q
Benzene
A
1500-1600
14
Q
Alcohol (O-H) is 3200-3600… what does the peak look like?
A
A broad smooth peak (looks like a ditch)
15
Q
The peak for a carboxylic acid O-H (2500-3500) and C=O (1700) look like what?
A
Broad and jagged
