[ao.sora]

Can you help me figure out the functional groups in the attached spectra?

Thanks!!

[Arkcon]

I'd like to welcome you, ao.sora: to the chemical forums, but I'd like to remind you to read the Forum Rules{click}.  You agreed to read and follow them when you signed up, and they apply to everyone, we'd like to see your attempt first.

One of the biggest problems here on the chemical forums is "helping" someone with something that they can simply look up in a reference.  We can't help you read, or check a table from a distance, you either do it, or you don't, and we do it for you, or we don't.  So start with the highlighted peaks, check a table, and tell us what's clear, and what's not.

[Babcock_Hall]

@OP, What does the signal near 1740 wavenumbers suggest to you?

[ao.sora]

Carbonyl functional group..i do recognize that but I am confused about the peak at ~3500cm-1...

[Babcock_Hall]

Carbonyl sounds reasonable.  The signal at 3500 cm^-1 could be a second functional group.  What does its position and breadth suggest to you?

[ao.sora]

secondary amine fits but there are no amines in the list of molecules given to me

[Babcock_Hall]

Secondary amines are usually not that broad.  What else has a stretch in that region?

[ao.sora]

Alcohols but then carbonyl is present

[Babcock_Hall]

Do you know for certain that there is only one functional group?  If so, is there any functional group that combines the elements you have identified?