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What gives this IR value?

Im trying to figure out the identity of an unknown based on a H-NMR, C-NMR, and IR spectrum. For the moment, im tyring to work through the IR...

nothing in my text book or online can explain the peak at 2359 and 2341. We've been told that the compound only contains hydrogen, carbon, and oxygen. If it helps any, we have identified that the compound contains a ketone or ester (H-NMR seems to indicate a ketone).

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  • 1 decade ago
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    could be in range for a CC triple bond, ketene (C=C=O), or possibly an overtone from a very very strong peak at half the frequency

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