13
C
10203040
ppm
36 .00
32.78
28.52
14.21
ppm
1.01.52.02.53.03.54.0
ppm
1
H
Exercise plus Solution Quick overview
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The higher quality PowerPoint files are freely available for download at any time.
13
C
10203040
ppm
36 .00
32.78
28.52
14.21
ppm
1.01.52.02.53.03.54.0
ppm
1
H
3.04
2.06
3.04
1.00
Inte-
gral
1
H NMR spectrum
recorded at 250.13 MHz
13
C{
1
H} NMR spectrum
recorded at 62.9{250.13} MHz
Deduce the structure from the spectra
measured at 250.13/62.9 MHz.
Then extract all homonuclear coupling
constants from the enlarged sections of the
proton spectra measured at 950.14 MHz.
C
4
H
9
I in CDCl
3
1.0
1.5
2.0
2.5
3.0
3.5
4.0
1
H
1
H
1.01.52.02.53.04.0 ppm
1
H
1.01.52.02.53.04.0 ppm
15
20
25
30
35
13
C
1
H/
1
H COSY
recorded at 250.13 MHz
1
H/
13
C HSQC
recorded at 250.13/62.9 MHz
Intensity multiplied by 16
3.02
1.01
1.03
3.01
1.00
Inte-
gral
1840.47
1833.61
975.81
968.59
968.49
961.33
1.52.02.53.03.54.0
ppm
1
H
1.0
3992.04
3987.06
39 85.19
3983.97
3980.21
3978.38
3977.11
3973. 37
3972.10
3970.30
3966.54
3965.31
3963.46
3958.49
Hz
1
H NMR spectrum
recoorded at 950.13 MHz
1.52.02.53.03.54.0
ppm
1
H
1.0
1641.67
1636.68
1634.47
1629.49
1627.25
1622.27
1619.96
1614.98
1612.72
1607. 74
1605.55
1600.57
Hz
1764. 59
1757.27
1756.48
1749.98
1749.21
1742.69
1741.92
1735.42
1734.65
1728.15
1727.38
1720.12
Hz
The proton multiplet looks very complex, but
obeys the first-order rules almost perfectly.
1.01.52.02.53.03.54.0
ppm
1
H
6.86
4.98
8.06
7.19
-14.54
7.29
H
3
C
CH
C
CH
3
I
H
H
Solution at a glance
As soon as you see the green footprints on the problem
icon, the step-by-step-solution is available
Contributions
Measurements
Rainer Haeßner
Spectrometer time
TU Munich
Discussions and
native English
language support
Alan Kenwright
Compilation
Rainer Haeßner
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