H NMR coupling and coupling constants

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  • Опубликовано: 1 фев 2025

Комментарии • 13

  • @letmebleed510
    @letmebleed510 3 года назад

    3:45 could the integration value for Hc be the similar to Hb and Ha due to the ability to couple 4 bonds away?

    • @wentzellab9707
      @wentzellab9707  3 года назад

      Integration value is not related to coupling!

    • @letmebleed510
      @letmebleed510 3 года назад

      @@wentzellab9707 thanks, I have a mono sub benzene but all three signals have a similar integration value. Shouldn’t the proton in the para have a value that is half compared to other?

    • @wentzellab9707
      @wentzellab9707  3 года назад

      @@letmebleed510 Yes it should but often with mono-subst aromatic rings the 3 predicted peaks are not resolved and appear as a multiplet.

    • @letmebleed510
      @letmebleed510 3 года назад

      @@wentzellab9707 okay, thank you very much for your help.

  • @jazminahmed5043
    @jazminahmed5043 3 года назад

    Sir what will be the coupling of
    4 Amino 3 chloro phenol?

  • @Tiifa90
    @Tiifa90 4 года назад

    thanks. one question, what is the triplet of the triplet in the end? a sextet? or a triplett...

    • @wentzellab9707
      @wentzellab9707  4 года назад

      It most likely will look like a sextet because the coupling constants are similar. Hope that helps!

    • @Tiifa90
      @Tiifa90 4 года назад

      @@wentzellab9707 thanks. so if the prof asks me what the multiplicity for proton Hc is I will say its a sextet right? because our prof dont aks for " triplet of a triplet" he wants us to say it in one word.

    • @wentzellab9707
      @wentzellab9707  4 года назад +1

      @@Tiifa90 Be sure to check with your professor but I would assume that is what they want.

    • @Tiifa90
      @Tiifa90 4 года назад +1

      @@wentzellab9707 ok thank you :)

  • @gildebertvonhaargert5327
    @gildebertvonhaargert5327 4 года назад +1

    yes but it doesn't explain why the coupling constant is different

    • @wentzellab9707
      @wentzellab9707  4 года назад

      Its different based on the Karplus equation and the angle between the Hs! Sorry I didn't see this before! Hope that helps!