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    So i have this IR spectrum, i can see it has a sp3 C-H stretches , however i am very unsure as to what the other two peaks are. The spectra is shown below



    I believe the other two peaks are C=O and C-O but the C-O is far too high , I have shown below the molecule i believe it is.


    If you could assist me at all in assigning the unkown peaks I would be very appreciative.

    Edit** I also have this IR, if you could let me know which one is a better fit for the molecule

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    You've got two carbonyl groups which may stretch in unison (symmetric stretch) or alternately (asymmetric stretch). The two peaks at 1745 and 1815 cm-1 correspond to these two stretching modes. Seeing two peaks in the C=O region like that is very typical for anhydrides.

    If you're interested, the C-O stretch comes up at around 1000 - 1300 cm-1 so it's probably that somewhat broad peak at just over 1000 cm-1. This signal isn't usually quite that broad though.
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    Yeah, the ones at 1815 and 1745 are the carbonyls (C=O) stretch, but as above, the C-O stretch isn't usually that broad!
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    Thinking about it, as there are two C-O bonds which can stretch symmetrically and asymmetrically as I described with the C=O bonds, maybe the different stretching modes have very similar frequencies which overlap and appear as one broad peak.
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    Yeh i do think it is that molecule for that spectra however i have uploaded another that could be it, which one do you think fits the molecule better, with the new one i have uploaded the C-H peak is shifted to the left which indicates that there is unsaturation which is why i believe that that IR spectra is not for that molecule but if you have any ideas it would be of great help
 
 
 
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