2.2 13 C NMR Spectroscopy
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2.2 13 C NMR Spectroscopy
Summary of the Regions of Chemical Shifts, δ (in ppm), for C Atoms in Various
Chemical Environments (C atoms are specified as follows: Q for CH 3 , T for CH 2 ,
D for CH, and S for C)
C
140 120 100 80 60 40 20 0 ppm
180 160
Q
Q
T
T
D
Q
D,S
Q
D
Q
S
T
D
S
T
H 3 C S
C CH 2 S
H 3 C C H 3 C C X
C CH 2 C
CH
C
C
H 3 C COX; X: C, O, N
CH 3 Cl
CH S
C
C
H 3 C N
C
C
C
C
C
C CH 2 COX; X: C, O, N
CHCOX; X: C, O, N
C
C
H 3 C C X
C
C CH 2
C
C
C
S
C
N
200
220
240
C
140 120 100 80 60 40 20 0 ppm
180 160
200
220
240
T
D
S
Q
S
CH N
C
C
C
C
C
COX; X: C,O,N
C
H 3 C O
CH Cl
C
C
C CH 2 Cl
C
C
C
N
C
Q
H 3 C NO 2
D