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IR spectrum question *Urgent*

I have to match the molecules to the spectrum, any tips/advice? I have no ideas
edit: I think I got it, there is a strong dipole moment between C(+) and N(-), there is a stronger peak at 2230 on spectrum A than at 2105 on spectrum B, so the molecule with the cyano group is represented by spectrum A... can anyone confirm this? :smile:
(edited 9 years ago)
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Original post by jacksonmeg
I have to match the molecules to the spectrum, any tips/advice? I have no ideas
edit: I think I got it, there is a strong dipole moment between C(+) and N(-), there is a stronger peak at 2230 on spectrum A than at 2105 on spectrum B, so the molecule with the cyano group is represented by spectrum A... can anyone confirm this? :smile:


Sound's reasonable to me... Typical shifts for the two groups are very similar so I guess thats the best way to think about it!

Any idea what the peak at ~3250cm-1 could be?
Do you have any data book values?

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jacksonmeg
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Original post by Girling1996
Do you have any data book values?

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No, were supposed to do it from knowledge of how it works and what affects absorption etc
Original post by jacksonmeg
No, were supposed to do it from knowledge of how it works and what affects absorption etc


The wavenumber values are very close so a data table doesn;t really help you.

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