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.
C
8
H
7
NO
3
measured in CDCl
3
Determine the structure and the absolute value of all of the coupling
constants!.
Please note: the nitrogen is not part of a ring system.
1
H NMR spectrum
recorded at 250.13 MHz
C
C
C
C
C
C
H
H
H
N
+
H
C
H
3
C O
O
O
-
7.77
8.18
1.12
1.67
2.29
0.48
Solution at a glance
As soon as you see the green
footprints on the problem icon, the
step-by-step-solution is available
(all coupling
constants are
absolute values
given in Hz)
