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Spectroscopy Problems
17
Copyright © 2017 Pearson Education, Inc.
32.
The
13
C
NMR and
1
H NMR
spectra of 1,2-, 1,3-, and 1,4-ethylmethylbenzene are shown here. Determine
which spectrum belongs to which compound.
CH
2
CH
3
CH
3
CH
3
CH
3
CH
2
CH
3
CH
2
CH
3
a.
7
1
2
3
3
Solvent
160
140
120
100
80
60
40
20
0
3
7
6
5
4
3
2
1
0
8
b.
Solvent
160
140
120
100
80
60
40
20
0
7
4
2 3
3
6
5
4
3
2
1
0
8