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a Question about H NMR?
A singlet at 7-8 ppm would b what structure. Would it be an aromatic compound. There is also a doublet at 3.5ppm if that helps at all.
2 Answers
- ?Lv 78 years agoFavorite Answer
As the other answerer noted, that would be an aromatic proton. However, a multiplicity of one (singlet, one peak) would mean that the proton does not have any near neighbors on the ring. For example (dots used as placeholders only):
........X..H
........|....|
.......C=C
....../......\
H-C.......C-Y
......\\......//
........C-C
.........|...|
........Z..H
The ring protons would appear as singlets if all three substituents (X, Y, Z) were the same.
- Anonymous8 years ago
7-8 usually implies aromatic, while the doublet would refer to another group on the molecule, perhaps a methylated substituent
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Source(s): http://leah4sci.com/ms-nmr-ir-spectroscopy/