1. Each of the following IR spectra is associated with one of the aromatic compounds below. Identify the
compound associated with each spectrum. (10 points)
O
O
F
ethylbenzene
N
benzoyl fluoride
NO2
N
C
benzyl isocyanide
3-nitrotoluene
N,N-diethyl3-methylbenzamide
Spectrum A _____________________
2.5
100
2.6
2.7
2.8
2.9
3
3.5
4
4.5
5
5.5
MICRONS
6
7
8
9
10
11
12
13
14
15
16
NICOLET 20SX FT-IR
17 18 19
21 22
0.0
90
.05
80
0.1
70
60
50
40
%
T
R
A
N
S
M
I
T
T
A
N
C
E
A
B
S
O
R
B
A
N
C
E
0.2
0.3
0.4
0.5
30
0.6
20
0.7
0.8
0.9
1.0
10
0
4000
2.0
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
WAVENUMBERS
1400
1200
1000
800
600
450
Spectrum B _____________________
2.5
100
2.6
2.7
2.8
2.9
3
3.5
4
4.5
5
5.5
MICRONS
6
7
8
9
10
11
12
13
14
15
16
NICOLET 20SX FT-IR
17 18 19
21 22
0.0
90
.05
80
0.1
70
60
50
40
%
T
R
A
N
S
M
I
T
T
A
N
C
E
A
B
S
O
R
B
A
N
C
E
0.2
0.3
0.4
0.5
30
0.6
20
0.7
0.8
0.9
1.0
10
0
4000
2.0
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
WAVENUMBERS
1400
1200
1000
800
This work by Dr. James S. Nowick, Professor of Chemistry, University of California, Irvine, is licensed under a Creative Commons Attribution 4.0 International License.
Spectra are from Sigma-Aldrich (www.sigmaaldrich.com) under fair use.
600
450
Spectrum C _____________________
2.5
100
2.6
2.7
2.8
2.9
3
3.5
4
4.5
5
5.5
MICRONS
6
7
8
9
10
11
12
13
14
15
16
NICOLET 20SX FT-IR
17 18 19
21 22
0.0
90
.05
80
0.1
70
60
50
40
%
T
R
A
N
S
M
I
T
T
A
N
C
E
A
B
S
O
R
B
A
N
C
E
0.2
0.3
0.4
0.5
30
0.6
20
0.7
0.8
0.9
1.0
10
0
4000
2.0
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
WAVENUMBERS
1400
1200
1000
800
600
450
Spectrum D _____________________
2.5
100
2.6
2.7
2.8
2.9
3
3.5
4
4.5
5
5.5
MICRONS
6
7
8
9
10
11
12
13
14
15
16
NICOLET 20SX FT-IR
17 18 19
21 22
0.0
90
.05
80
0.1
70
60
50
40
%
T
R
A
N
S
M
I
T
T
A
N
C
E
A
B
S
O
R
B
A
N
C
E
0.2
0.3
0.4
0.5
30
0.6
20
0.7
0.8
0.9
1.0
10
0
4000
2.0
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
WAVENUMBERS
1400
1200
1000
800
600
450
Spectrum E _____________________
2.5
100
2.6
2.7
2.8
2.9
3
3.5
4
4.5
5
5.5
MICRONS
6
7
8
9
10
11
12
13
14
15
16
NICOLET 20SX FT-IR
17 18 19
21 22
0.0
90
.05
80
0.1
70
60
50
40
%
T
R
A
N
S
M
I
T
T
A
N
C
E
A
B
S
O
R
B
A
N
C
E
0.2
0.3
0.4
0.5
30
0.6
20
0.7
0.8
0.9
1.0
10
0
4000
2.0
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
WAVENUMBERS
1400
1200
1000
800
This work by Dr. James S. Nowick, Professor of Chemistry, University of California, Irvine, is licensed under a Creative Commons Attribution 4.0 International License.
Spectra are from Sigma-Aldrich (www.sigmaaldrich.com) under fair use.
600
450