| C6H8O | |
 |
Interpret
:
d
(ppm)
|
Multiplicity
(n + 1)
|
Indicating
|
198
|
singlet
|
 |
145
|
doublet
|
>
CH = CH <
|
129
|
doublet
|
|
47
|
triplet
|
 |
41
|
triplet
|
 |
30
|
triplet
|
-
CH2-
|
The peak is a singlet, indicating that it corresponds to a carbon bearing no hydrogens. The chemical shift (d 198) suggests that the carbon is a carbonyl, most likely an aldehyde or ketone.
The peak is a doublet, indicating that it corresponds to a CH. The chemical shift (d 145) is in the "alkene" region.
>
CH = CH <
The peak is a doublet, indicating that it corresponds to a CH. The chemical shift (d 129) is in the "alkene" region.
>
CH = CH <
The peak is a triplet, indicating that it corresponds to a CH2 group. The chemical shift (d 47) suggests that the CH2 is adjacent to something mildly electronegative (i.e., a carbonyl or an alkene p-system).
The peak is a triplet, indicating that it corresponds to a CH2 group. The chemical shift (d 41) suggests that the CH2 is adjacent to something mildly electronegative (i.e., a carbonyl or an alkene p-system).
The peak is a triplet, indicating that it corresponds to a CH2 group. The chemical shift (d 30) is in the "simple" range, suggesting a simple internal CH2.
-
CH2-
Molecular formula and index of hydrogen deficiency
C6H8O
The index
of hydrogen deficiency is 3 (3 double bonds or rings)
Structural formula
