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Flashcards in IR Deck (20)
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1

Fingerprint Region

1400-600 cm^-1

2

Functional Group Region

4000-1400 cm^-1

3

C(triple bond)N

2260-2220 cm^-1
medium

4

C(triple bond)

2260-2100 cm^-1
medium-weak

5

C=C

1680-1600 cm^-1
medium

6

C=N

1650-1550 cm^-1
medium

7

Benzene ring

Around 1600 cm^-1 ; AND 1500-1430 cm^-1
strong-medium

8

C=O

1780-1650 cm^-1
ketone
strong

9

C-O

1250-1050
strong

10

C-N

1230-1020
medium

11

O-H (alcohol)

3650-3200
strong & broad

12

O-H (carboxylic acid)

3300-2500
strong & very broad

13

N-H

3500-3300
medium & broad

14

C-H

3300-2700
medium

15

C(triple bond)C-H
Carbon-Hydrogen bond stretch
sp carbon

Around 3300 cm^-1

16

C=C-H
Carbon-Hydrogen bond stretch
sp^2 carbon

3100-3020 cm^-1

17

C-C-H
Carbon-Hydrogen Bond Stretch
sp^3 carbon

2960-2850 cm ^-1

18

C-H Bending Vibration
sp^3 carbon

Left of 1400 cm^-1
Methyl group in addition to left shows up to the right of 1400

19

C-H Bending Vibration
sp^2 carbons

1000-600 cm^-1

20

N-H Bending Vibration

1600 cm^-1
broader, more intense than C=C