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Author Topic: UNKNOWN ORGANIC COMPOUND?? PLEASE!  (Read 382 times)

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meri.la

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UNKNOWN ORGANIC COMPOUND?? PLEASE!
« on: December 02, 2016, 01:03:42 PM »

Hi,
So, I was given an organic compound by my professor and we were supposed to figure out what it is by chemical tests and spectroscopy. I figured out that its an ester and now I have the IR spectrm
https://www.flickr.com/photos/146806462@N05/31344842326/in/dateposted-public/
Here is the NMR, but its kind of crappy: https://www.flickr.com/photos/146806462@N05/31344880936/in/dateposted-public/
The boiling point was a little bit finicky, so I ended up with something between 86-99. In that range, I have 10 compounds:
- isopropyl acetate
- methyl isobutyrate
- 2-propenyl acetate
- tert butyl acetate
- ethyl propionate
- methyl methacrylate
- methyl pivalate
- ethyl acrylate
- propyl acetate
- methyl butyrate

I didn't do a test for unsaturation, but I dont think it is a double bond based on the really crappy CNMR spectrum I was given
So far, I have just been googling IR/NMR spectrums and it kind of seems like it could be t-butyl acetate or propyl acetate, but i dont know im kind of lost. Please help its due tonight.
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Dan

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Re: UNKNOWN ORGANIC COMPOUND?? PLEASE!
« Reply #1 on: December 02, 2016, 10:04:29 PM »

If you have a 13C NMR, post it. The 1H NMR you have is useless, it looks like something went wrong and it should be re-run. It doesn't match any of your 10 options.
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Vidya

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Re: UNKNOWN ORGANIC COMPOUND?? PLEASE!
« Reply #2 on: December 03, 2016, 01:46:33 AM »

Check the attached files
 1HNMR and IR of Isopropyl acetate
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