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Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: dipesh747 on April 03, 2012, 07:02:15 AM

Title: NMR chemical shift
Post by: dipesh747 on April 03, 2012, 07:02:15 AM

Hello,

I ran a reaction and followed is using NMR spectroscopy. Initially I got pure starting reactants and pure end products and ran the spectra to see what they would look like.

When I followed the reaction via NMR in the spectra you saw products and reactants. However thee products had a chemical shift downifled average 0.34 ppm, and the reactants had a shift upfield of about 0.6.

So I'm guessing it is to do with the pH..does anyone know how can I confirm this?

Title: Re: NMR chemical shift
Post by: dipesh747 on April 03, 2012, 09:21:48 AM

I have figured this out, so there is no need to reply. but I don't know how to delete the topic.

Title: Re: NMR chemical shift
Post by: Babcock_Hall on April 03, 2012, 12:12:06 PM

Maybe you should explain what you learned (if it is interesting) instead of deleting it.

Title: Re: NMR chemical shift
Post by: dipesh747 on April 04, 2012, 04:12:56 PM

Well I learned that when I use NMR I should take more care....my 1.reference spectrum was too basic and one was too acidic, so when I did the NMR for my real experiment there was shifts in either direction. So I learnt I should take more care when I do experiments lol