Click on any peak for help in interpreting this spectrum.
The peak is a singlet, indicating that it corresponds to a carbon bearing no hydrogens. The chemical shift (d 207) suggests that the carbon is a carbonyl, most likely an aldehyde or ketone.
The peak is a doublet, indicating that it corresponds to a carbon bearing one hydrogen. The chemical shift (d 131) is in the region often observed for alkenes.
The peak is a doublet, indicating that it corresponds to a carbon bearing one hydrogen. The chemical shift (d 124) is in the region often observed for alkenes.
The peak is a triplet, indicating that it corresponds to a CH2 group. The chemical shift (d 49) suggests that the CH2 is adjacent to something mildly electronegative (i.e., a carbonyl or an alkene p-system).
The peak is a quartet, indicating that it corresponds to a CH3 group. The chemical shift (d 25) is in the "simple" range, suggesting a CH3 adjacent to something mildly electronegative (i.e., a carbonyl).
The peak is a quartet, indicating that it corresponds to a CH3 group. The chemical shift (d 17) is in the "simple" range, suggesting a simple terminal CH3.
C6H10O
From the molecular formula, the compound has "2 degrees of unsaturation" (2 double bonds or rings).
IUPAC Name: 2-butanon-4-ene
The 13C NMR has 6 peaks, a quartet at d 25 (a CH3), a triplet at d 49 (a CH2), another quartet at d 17 (another CH3), two doublets (a CH) , one at d 124 and one at d 131, and one singlet atd 207. Since the molecule has six carbons and six 13C NMR peaks, there must be no symmetry. The singlet at d 207 is in the carbonyl region, most likely an aldehyde or ketone. The CH3 groups at d 17 and 25 are consistent with simple terminal methyl groups, with one slightly shifted by an mildly electronegative group (a carbonyl?). The doublets at d 124 and 131 are in the alkene region, suggesting a -CH=CH- group. The remaining CH2 group at d 49 is probably deshielded by two electronegative groups.
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Structure: 