Infrared Spectroscopy - Interpretation

[skyisblue]

Advertisement - Members don't see this ad

If I had a compound with a strong absorption at 1710/cm, can I automatically assume that it's a carbonyl group of an aldehyde or a ketone, because there are no other absorptions?

 

[andyjl]

yes

 

[Lonely Sol]

If I had a compound with a strong absorption at 1710/cm, can I automatically assume that it's a carbonyl group of an aldehyde or a ketone, because there are no other absorptions?

DO you mean like if you see a strong band at 1710, then you can automatically assume its either aldehyde or keytone, if so then
No! it could be a carboxylic acid or an amide.

 

[DentalKitty]

DO you mean like if you see a strong band at 1710, then you can automatically assume its either aldehyde or keytone, if so then
No! it could be a carboxylic acid or an amide.

I think he means when there are no additional peaks besides that one. You'd need the OH or NH peak if it were an acid or amide, right?