Proton NMR practice 2 | Spectroscopy | Organic chemistry | Khan Academy

[@hohosims5432]

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[@Syvmana]

I love how you detailed explanations for a carbonyl/C-O bond. Thank you!

[@abdullahal-azri6395]

Thank you so much sir!
Your explanation is so good and makes every thing so simple!
Thank you again!

[@marissapena9925]

These videos help so much! Thank you!

[@anushagopalan]

When you notice that a peak corresponds to 2 or 3 protons, how do you conclude that its from a CH2 or CH3 group and not protons on different carbon atoms, such that they are in the same environment?

[@jamesk2113]

Anusha Gopalan There might be too many carbon atoms if all CH groups were in the same environment.

[@garysingh7758]

wow i love these NMR. its like a puzzle figuring this stuff out

[@simrannahar8262]

never had nmr explained this clearly to me before, tysm!

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Its amazing that your lectures are better than 1 hr lectures from my professor.

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[@zannatul23]

well explained
thank you

[@marietheresebouantoun7013]

The chemical shift of the Carbonyl is around 2 ppm yet some sources place Aldehyde around 9 to 10 ppm .... any explanation ?

[@hadeerrashad5486]

THANK U VERY MUCH

[@ugafan3]

why is the ppm so low for the two methyl groups, though? Why doesn't the oxygen pull their electrons and DE-shield them as well?

[@oscarw.alcantara4459]

It does, but due to the proximity effect it doesn’t deshield them as much.

[@bhwang0]

Is it not necessary for the Oxygen atom to have double bonds (in NMR spectroscopy) in this case?

[@reinettamin9099]

This was veery helpful..

[@davirodriguesdasilva6677]

very nice! excellent!

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learned it different out of the book ... tamato/tamata

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