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Topic: Help with an NMR  (Read 4100 times)

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Offline nate

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Help with an NMR
« on: May 02, 2006, 09:37:30 PM »
Hi:

I am trying to interpret an NMR.  From GC/MS, bp determination, nitrous acid tests, pH tests, KBr IR I believe with great certainty that I am looking at o-nitroaniline.  I have one question, what is the broad singlet at around 6 ppm from?  I can tell that I am looking at aromatic hydrogens by where the multiplets fall in the range.  Is it from the neighboring H to the NO2 group?  There is a link at the bottom if you want to view the spectra.

Please Help.
Thanks
http://www.aist.go.jp/RIODB/SDBS/cgi-bin/direct_frame_top.cgi?lang=eng
« Last Edit: May 02, 2006, 09:41:45 PM by nate »
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Offline wereworm73

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Re: Help with an NMR
« Reply #1 on: May 02, 2006, 10:09:14 PM »
It's from the hydrogens on the NH2 group.
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Offline Yggdrasil

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Re: Help with an NMR
« Reply #2 on: May 02, 2006, 10:28:58 PM »
Whenever you see a broad peak in an NMR, its likely due to a proton capable of forming a hydrogen bond (e.g. N-H, O-H).
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Offline nate

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Re: Help with an NMR
« Reply #3 on: May 02, 2006, 10:43:37 PM »
Okay, that makes more sense.  Thank you both.
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