Download Simplified Table of Proton NMR Chemical Shifts Chemical Shift

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Transcript
Simplified Table of Proton NMR Chemical Shifts
Chemical Shift,
Proton(s)
of interest:
If the proton(s) of interest are
attached to a carbon atom that:
<δ2
H
|
(H)C—C—C(H)
|
C(H)
is attached to alkyl groups only
δ2-3
H
|
—C—C—
| ||
O(C)
is attached to a carbonyl
group, or is allylic or benzylic
δ3-5
H
|
—C—O
| (N)
(F, Cl, Br, I)
is attached to oxygen,
nitrogen, or halogen
Some classes of compounds have unique chemical shifts:
H
δ 4.5 - 6.5
δ 6.5 - 8
δ 9 - 10
> δ 10
C
C
alkene proton(s)
H
aromatic ring proton(s)
H—C—
||
O
aldehyde proton(s)
H—O—C—
||
O
carboxylic acid proton(s)
OH protons of alcohols and NH protons of amines can be from
1 - 5.