N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
221
5.9 Nitrogen Compounds
221
5.9.6 Nitriles and Isonitriles
1 H Chemical Shifts and Coupling Constants of Nitriles (δ in ppm,
J in Hz)
N
H
N
NO 2
NO 2
H
H
H
H
CN
CN
CH N
N CH
CH N
H
N
NO 2
CH 3 CH N
H
N
NO 2
NO 2
H
CN
H
H
H
H
H
H
N
N
H
H
N
N
N
H
N
NO 2
NO 2
H
H
H
H
CN
H
H
H
H
H
H
H
2.39
2.96
2.00
1.54
1.50
1.70
1.20
1.70
2.08
1.52
1.22
1.76
1.20
1.70
1.29
0.96
1.04
1.98
1.31
1.70
1.63
0.96
1.35
2.67
3 J vic 7.6
2.35
1.08
1.50 2.34
2.34
2.14
5.78
7.79 11.12
5.74
6.62
2.03
2.00
1.83
7.89
1.03
1.99
2.33
7.56
7.81
7.69
7.3–7.5
11.04
8.06*
* in DMSO: 11.33
7.57
7.93
7.96
7.94
8.28
8.32
8.29
8.18
7.14
9.10
9.12
9.10
7.44
7.44 7.83 8.66
11.02
CH 3 CN
CN
CN
CN
CN
CN
7.66
1.37
7.48
7.62
a
b
c
d
e
3 J ab 7.8
4 J ac 1.3
5 J ad 0.7
4 J ae 1.8
3 J bc 7.7
4 J bd 1.3
a
CN
H
H
H
H
H
d
c
b
e
3 J ab 8.4
3 J ac 5.1
2 J bc -4.7
3 J bd 9.2
3 J be 7.1
3 J ce 9.5
6.11
6.24
5.69
a
b
c
3 J ab 11.8
3 J ac 17.9
2 J bc 0.9