N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
4.6 Heteroaromatics
107
4.6 Heteroaromatic Compounds
4.6.1 Chemical Shifts
13 C Chemical Shifts of Monocyclic Heteroaromatics (δ in ppm)
143.0
138.1
158.9
147.9
133.3
135.0
138.5
147.8
135.8
122.3
118.6
126.2
150.6
134.6
145.1
150.0
133.3
157.0
123.4
136.2
147.4
152.7
118.0
124.9
131.0
109.9
125.4
120.1
123.7
126.5
121.4
144.9
166.5
160.9
129.0
128.0
128.6
127.2
135.9
148.4
135.6
146.0
125.7
149.8
151.4 158.0
156.4
142.5
139.6
146.0
49.8
(in ethanol)
(in DMSO)
139.4
126.8
100.5
104.7
109.0
103.4
130.4
147.3
143.3
122.3
147.4
143.2
137.6
107.7
126.4
128.8
O
N
H
S
Se
N
O
N
N
H
N
S
Te
N O
N N
H
N
S
N
N S
N
N
N
H
N
N
N
H
N
N N
H
N
N
N N
H
HN N
H
+
HN
N
H
+
N
N
–
N N
–
N
H
+
N
N
+
OH
Cl
–
N
O
N
+
CH 3
I
–
N N
N
N
N
N
N
N
N
N
N
N
N