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Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: Ahmedalaraby20 on March 13, 2018, 01:59:59 PM

Title: NMR problem
Post by: Ahmedalaraby20 on March 13, 2018, 01:59:59 PM

Hey there guys,
I am having a problem figuring out what are the spin systems in this NMR spectrum,
I overplayed both the COSY and the TOCSY spectrum but it doesn't fit any of the patterns that the professor  gave us   
the sample has those amino acids
S1-E2-I3-Y4-C5-N6-S7-D8-G9-T10-C11-T12-W13-T14-V15 and i need to figure out which is which

i would appropriate if someone could help and explain to me how its done

https://ibb.co/iOR2pc (https://ibb.co/iOR2pc)


Thanks

Title: Re: NMR problem
Post by: Arkcon on March 13, 2018, 04:58:27 PM

I'd like to start with the suggestion of a cleaner spectrum.  I would download your linked image and attach it here into the forum, but its too hard to read.  Try to get a printer ready image and attach that here.