IR spectroscpy. Using common IR wavenumber frequnceies, determine the unknown co
ID: 499860 • Letter: I
Question
IR spectroscpy. Using common IR wavenumber frequnceies, determine the unknown compound. Possibilities: alumina, ammonium chloride, ascorbic acid, benzoic acid, boric acid, caffeine, cysteine, phenoxymethylpenicillin, polyamine, and tripolyphosphoric acid. I was concidering polyamine due to the "fang" due to the 3380 and 3518 peak possibly representing an amine group. Cysteine is close to, but normally has a 2250 peak for the S-H bond. Please weigh in!!
BRUKER or-odono- Ngggg58 3500 3000 2500 2000 1500 1000 500 Wavenumber cm-1 C1UsersiChemistry UserDocuments!CH3551spring2017NUnknown D Spring 2017.0 Unknown D Spring 2017 Powder 20/03/2017 Page 1/1 #9-7 le'E6bi 6L'EZ9 LOL / -99918 eZ868 89"616 6b8E6 ZZ996 LP'LLOL-- 19e90 LI 6E'E6LL £9,PZZL !! 0 062L SZELEL 8pSSCL Ltr. LecL LL'ZhbL 65%PL PEZ19L ! LO'OL9L 111LL.88LZ . S92oet 99.18cc 111111E9'8L92 50 00L 96 06 98 08 SL 0L 99 [96] aoueqiusueLExplanation / Answer
IR analysis
Peaks at 3518 cm-1 and 3381 cm-1 are for N-H stretch
the compound has amine functionality
the peaks at 3026 cm-1 is for sp2 =C-H stretch
2788 cm-1 is for C-H stretch
1612 cm-1 and 1670 cm-1 is for C=C stretch
Most probable identity of compound = Polyamine
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