What is it meant by characteristic IR?

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Characteristic IR refers to the unique absorption bands in an IR spectrum that indicate specific functional groups within a molecule. If an organic compound lacks characteristic IR, it suggests that there are no unique absorption bands present that can identify its functional groups. This absence of characteristic bands can also apply to IR solvents, indicating they do not interfere with detecting the desired IR bands of dissolved compounds. Understanding these concepts is crucial for accurately identifying organic compounds using IR spectroscopy. The discussion highlights the importance of characteristic IR in both analyte and solvent roles.
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Any ideas? Thanks so much!
 
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It means that the IR spectrum is so unique that it is characteristic of ...
 
Yes but IF I'm just told that a certain organic compound doesn't have any characteristic IR what does that mean?.
 
This probably means that there isn't an IR absorption band unique to the molecule indicative of a functional group with "characteristic" IR bands in the spectrum. This is in the role as the analyte.
In the role of an IR solvent it would indicate no absorption bands exist that interfere with its use to see the desired characteristic IR bands for ID'ing compounds dissolved in it.
 

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