Weird NMR spectra

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Spilogale
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Weird NMR spectra

Post by Spilogale »

Hi

I'm a senior taking organic chemistry. We were given an IR/ NMR assignment and while I completed identifying two other spectra on my own, I'm a bit stumped by the weird peaks on the NMR spectra. There are four short peaks which do not match the patterns given to use for a quartet, they appear to either by random or increasing in height from left to right and the peaks are in the 7-6 range.

If it is a quartet (next to 3 H), then there's 1H next to 3H.

The given formula is C5H8O2 with a given molecular weight of 100.12.

The IR spectra suggests an OH group, that it is a carboxylic acid, etc.

What other information can I provide to help try to clarify this so I can understand the problem better?
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