4ii. NMR spectroscopy - Coupling

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Uploaded by on Dec 18, 2009

Visit http://www.chemistry.jamesmungall.co.uk for notes on this topic. Thanks for watching!

Explanation of how coupling occurs. Specific example of formation of a doublet due to coupling of 2 non-identical protons.

Part of a set of videos giving an introductory course on proton NMR, aimed at around A-level or International Baccalaureate standard. Includes dicussion of integration, chemical shift and coupling.

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  • This is not vey well explained, you did a very good job with the chemical shift, but this part is not very wel done, I'm confused! :-S

  • I'm soo confused!!! =( how is coupling not the same as multiplicity???

  • thanks alot for this videos

    i did all this but forgot lol

  • I love your sexy British accent! I hope you can be my lecturer instead of my ugly one.

  • Suddenly this all makes sense!

  • @hunnybear20 I am just guessing that this is because there is a possibility of the two hydrogens on the carbon being spin up spin down and spin down spin up... there is two situations in which the spins "cancel" one another out.... hence the size of the superimposed H line is double in size in comparison to the other two shifts it can experience..

  • The size of the peaks are different, why is that? (e.g the read peaks are the same but the green ones are of differnt sizes) and is it possible to deduce the intergration ratio for these smaller peaks, if yes how?

    Thank you

    PS: your videos are amazing, im subscribing xD

  • love the explanation...youre amazing...=]

  • THANK YOU so much, you have explained it so well, i understand it now ...thanks again 

  • Excellently explained! Thank you, and awesome job! Keep up the good work!

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