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Topic: Determining Unknown Substance with IR, MS, and NMR  (Read 5273 times)

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Offline FiveByFive

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Determining Unknown Substance with IR, MS, and NMR
« on: February 07, 2012, 11:15:43 AM »
For lab, I have to determine the structure of an unknown substance.

The following link has images of my IR, MS, and NMR.

http://imageshack.us/g/72/nmrg.jpg/

I have worked on this for a few hours and think I have finally figured it out.

Can anyone confirm if it is, indeed, propiophenone (1-phenyl-1-propanone)?
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Offline Polytriazole

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Re: Determining Unknown Substance with IR, MS, and NMR
« Reply #1 on: February 07, 2012, 04:09:31 PM »
What about the data you have been given leads you to believe that propriophenone is  your unknown?  If you look at reference spectral data for this compound, does it match?
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Offline orgopete

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Re: Determining Unknown Substance with IR, MS, and NMR
« Reply #2 on: February 07, 2012, 07:01:40 PM »
That seems reasonable. To confirm it, I would compare the fingerprint region of the IR in a database such as SDBS. The peaks must match "peak for peak". (I say that because I wouldn't trust my saying so. I could have made a mistake, or may be not.)
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