The structures of caffeine and theobromine are very similar. What characteristic absorption bands would you expect to find in the IR that would not be present in caffeine?
2007-10-23 17:32:31 · 0 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The spectrum for theobromine should show a peak for secondary amine N-H stretch at around 3300 wavenumbers because there is a N-H at the 1 position.
The spectrum for caffiene won't have one because all 3 nitrogens have methyl substituants.
2007-10-23 18:21:24 · answer #1 · answered by Flying Dragon 7 · 2⤊ 0⤋
Theobromine Vs Caffeine
2016-11-11 00:45:49 · answer #2 · answered by beaudin 4 · 0⤊ 0⤋
Theobromine Structure
2016-12-29 19:15:03 · answer #3 · answered by ? 4 · 0⤊ 0⤋
What mentioned by flying dragon is correct.
However, there is another alternative way.
If you have a full IR spectrum of caffeine and / or theobromine from library (should be easily available in any university), you can compare the fingerprint region of IR spectrum (normally from wavenumber of 1400 cm-1 to 400 cm-1). This is because, usually the fingerprint region of a particular compound is unique.
2007-10-23 20:55:12 · answer #4 · answered by SS 2 · 2⤊ 0⤋
Caffeine
2016-03-15 05:15:31 · answer #5 · answered by Cynthia 4 · 0⤊ 0⤋