[TheUnfocusedOne]

Not sure if this can go here, but I'm not sure where else to put it. I figured spectroscopy questions should go here.

I'm running an unknown amorphous powder on an IR using an ATR. The spectra came back with a sharp peak at 3627cm-1. I haven't a clue what functional group this could be. The only results I've found for a peak like that in that general region is a free OH peaks, but that should only occur at low concentrations in solution (from what I've read). Anyone have any idea what this might be?

It might be an inorganic something, but it's pretty high energy for that.

Thanks!

[voidSetup]

I'm not too sure but I've read that a sharp peak around 3600cm-1 can show up from an OH group that is unable to hydrogen bond due to sterics preventing the functional group on neighboring molecules to get close enough.