Nmr Practice Problems Worksheet Page 5
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98) Propose plausible structures for the five compounds whose proton NMR spectra are shown: (a) C
H
O
; (b)
4
10
2
C
H
Br; (c) C
H
Br; (d) C
H
Br.
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7
4
9
8
9
a)
b)
1.00
6.00
3.00
2.012.00
3.00
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
c)
d)
2.01
1.00
6.03
5.01
2.00
2.00
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
9) Compound H,C9H12, gives a proton NMR spectrum as shown below. Assign a structure.
5.00
1.00
6.04
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
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