What do the symbols \delta and \upsilon represent in IR spectroscopy?

AI Thread Summary
The discussion centers on interpreting IR spectra, particularly the challenge of identifying functional groups using the delta (δ) and nu (ν) designations in relation to spectral lines. The original poster expresses confusion about correlating the fingerprint region (400-1500 cm-1) with the functional region (1500-4000 cm-1) for accurate identification. A response highlights that the fingerprint region is not very useful for determining functional groups and seeks clarification on the original question regarding the delta and nu representations, suggesting they relate to stretching and bending vibrations of functional groups.
burton95
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Hi there. First time PF poster. I have a question about interpreting IR spectro graphs. I get the general idea of interpreting the sharpness and strength of the line but when I need to ID the pulse down I have to choose between \delta and \upsilon (or mabe its just v) version of the functional groups. I tried to correlate the usage b/w the fingerprint (400-1500 cm-1) and the functional (1500-4000 cm-1) regions and haven't seen the light yet. Thanks

burton95
 
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I don't understand what you mean by delta or nu versions of the functional group. The fingerprint region is pretty useless in finding out what functional groups are present btw. Could you state your question more precisely?
 
I think I found out it represents a stretch or a bend. Thanks for the reply

Anthony
 

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