CHEM 6AL Lecture Notes - Lecture 6: Infrared Spectroscopy, Ketone, Carbonyl Group
Document Summary
High energy = wavelength of light corresponds to high energy light. Iq: every absorption band that has high intensity will not always be a high energy absorption band (can be any energy) 2 scans: background scan + scan of sample. Co2 (seen as double around 2350 cm^-1) Place a small amount of sample on atr crystal. Apply pressure tip (if sample is a solid) High energy peaks can sometimes be smaller than you predict. Place a neat drop of sample on a salt (nacl) plate. Gently place another salt plate on top of the sample. Mull = fine dispersion of solid in a viscous liquid. O( stretches when there shouldn(cid:495)t be any. Make sure you have the right product. Oxycodone oxycodone and nothing like that in morphine. Morphine doesn(cid:495)t have a carbonyl therefore there would be a peak at (cid:883)7(cid:884)(cid:882) for. 1740 cm ^-(cid:883) b/c of carboxylic acid (cid:523)won(cid:495)t see this in morphine or oxycodone(cid:524)
