N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
194
5 1 H NMR
5.6 Heteroaromatic Compounds
5.6.1 Non-Condensed Heteroaromatic Rings
1 H Chemical Shifts and Coupling Constants (δ in ppm, |J| in Hz)
HN
N
H
+
N
H
S
Se
N
O
N S
N
N
H
N O
N N
H
N
N
O
N
N
N
H
N
N
N
H
N
N S
N
S
O
a
a
a
d
d
d
b
b
b
c
c
c
e
6.38
7.09
6.23
7.42
7.31
6.71
8.1,
broad
3 J ab 1.8
4 J ac 0.9
4 J ad 1.5
3 J bc 3.4
a
d
b
c
7.23
7.88
3 J ab 5.4
4 J ac 1.5
4 J ad 2.3
3 J bc 3.7
a
b
c
7.13
7.13
13.4
13.7
≈12
7.74
a
a
a
a
a
b
b
b
b
d
b
c
c
c
c
c
7.15
6.38
7.26
8.27
8.58
13.5
8.19
8.33
7.75
7.58
7.58
9.18
13.5
6.10
7.68
8.49
8.72
7.74
7.90
8.31
8.54
7.74
3 J ab 0.8
4 J ac 0.5
4 J bc 0.0
3 J ab 1.7
4 J ac 0.3
3 J bc 1.8
3 J ab 2.1
4 J ac 0.0
3 J bc 2.1
a
b
c
7.98
7.41
8.88
3 J ab 3.2
4 J ac 1.9
4 J bc 0.0
3 J ab 4.7
4 J ac 0.4
3 J bc 1.7
4 J ac 1.4
3 J ad + 4 J bd = 4.4
3 J cd 2.4
3 J ab 1–2
4 J ac 1.0
4 J bc 1.0
3 J ab 2.6
4 J ac 1.3
4 J ad 2.1
3 J ae 2.6
3 J bc 3.5
4 J be 2.6
3 J ab 4.8
4 J ac 1.0
4 J ad 2.8
3 J bc 3.5
N
N
O
Cl
–