This is no longer an alkene ..so do you just look for the Csp3 bonded to H?
2006-11-04 12:16:37 · 2 answers · asked by Kiya 2 in Science & Mathematics ➔ Chemistry
If you are doing an IR Spectrum on the alkene that has ALREADY been brominated, the ~1600-1675 cm-1 peak for an alkene is not there any more. Once brominated, the C-X bond will resonate at below 600 cm-1 but it is in the fingerprint region and is not very strong and distinguishable. So all that is left is, yes, the sp3 bond fo C-H.
2006-11-04 12:28:32 · answer #1 · answered by pummeloman 2 · 0⤊ 0⤋
I've never heard of an olefin bond at 1600-1700 ... that's carbonyl country.
I'd look for the disappearance of a peak around 2200. You can't really look for more alkyl (2800-3000) stretches because the molecule already has a lot of those, most likely.
2006-11-04 15:48:24 · answer #2 · answered by niuchemist 6 · 0⤊ 0⤋