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Topic: Help with 1H NMR Spectrum  (Read 2301 times)

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Offline adinfinitum

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Help with 1H NMR Spectrum
« on: January 26, 2014, 12:05:01 AM »
I am trying to figure out the structure for this substance, I also have an IR but it doesn't tell much.

So I've done the calculation and there are no pi bonds in this substance. I've done the integrations and the numbers on the sticky notes are what I've gotten, the hydrogens from each source.

What's throwing me off in terms of figuring out the structure is what I've labelled #2. It has 9 peaks almost but the machine labelled only 4, and it has 4 hydrogens as coming from it which I assumed to mean 2 CH2's.

My best guess as to the structure is NH2-CH2-CH2-CH2-CH3. Which would fit for individual parts but is completely wrong, as the middle CH2 would get a 5 split peak instead of a singlet.

I could really use some help, I'm at my wit's end

This is the link to the spectrum because the image is too large to post
https://www.dropbox.com/s/3a8cusui8g1ivyp/Photo%201-25-2014%2C%2011%2041%2051%20PM.jpg

Offline Rutherford

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Re: Help with 1H NMR Spectrum
« Reply #1 on: January 26, 2014, 09:10:54 AM »
The number of hydrogens you marked in the spectrum doesn't add to 11.

Offline adinfinitum

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Re: Help with 1H NMR Spectrum
« Reply #2 on: January 26, 2014, 12:19:23 PM »
I apologize, the most right one peak is supposed to be 3 Hydrogens.

Offline Rutherford

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Re: Help with 1H NMR Spectrum
« Reply #3 on: January 26, 2014, 01:31:42 PM »
No other could fit, it has to be N-buthylamine. Maybe the spectrum is not in good resolution.
Here I found another spectrum of N-buthylamine: http://www.hanhonggroup.com/nmr/nmr_en/RB01060016.html.

Offline adinfinitum

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Re: Help with 1H NMR Spectrum
« Reply #4 on: January 26, 2014, 08:32:30 PM »
Thank you so much.

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