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Spectroscopy Problems
11
Copyright © 2017 Pearson Education, Inc.
20.
Identify the compound with molecular formula
C
5
H
10
O
2
that gives the following
1
H NMR
spectrum.
8
7
6
5
4
3
2
1
6
3
1
0
5
21.
Identify the compound with molecular formula
C
8
H
7
O
2
Br
that gives the following IR and
1
H NMR
spectra.
1600
1800
4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000
1400 1200 1000
800
600
450
100
90
80
70
60
50
40
30
20
10
0
0.0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.0
A
B
S
O
R
B
A
N
C
E
%
T
R
A
N
S
M
I
T
T
A
N
C
E
1
12 11 10
8
2 2
2
Offset: 0.4 ppm.
9
8
7
6
5
4
3
2
1
0