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
It is recommended to use this version only for a quick overview of the NMR challenge. All animations of the PowerPoint
version are missing, under certain circumstances quality deficiencies may also occur.
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
