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Topic: NMR - Coupling  (Read 4659 times)

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Offline Dolphinsiu

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NMR - Coupling
« on: March 06, 2007, 05:32:08 AM »
   H F
    l  l
Cl-C-C-Cl
    l  l
   H F

Why there is 3 JH-F value?How come there is 3 couplings?
« Last Edit: March 07, 2007, 10:06:31 AM by Dolphinsiu »
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Re: NMR - Coupling
« Reply #1 on: March 06, 2007, 12:26:30 PM »
It should be a triplet.  Just one coupling constant.
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Offline Dolphinsiu

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Re: NMR - Coupling
« Reply #2 on: March 07, 2007, 10:09:34 AM »
Why it is a triplet?

I only know there is two H - F interaction, but why there is 3 J H-F value?
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Re: NMR - Coupling
« Reply #3 on: March 07, 2007, 12:45:39 PM »
F behaves just like H would, in terms of signal multiplicity.  If you had a -CH2CH2- unit, you would expect to see triplets, right?  Same thing with an F2.

The should only be one JH-F value, as there is for any triplet.
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Offline wintermute

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Re: NMR - Coupling
« Reply #4 on: March 09, 2007, 01:48:19 AM »
Becouse it is interactin through three bonds.
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Offline Dolphinsiu

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Re: NMR - Coupling
« Reply #5 on: March 11, 2007, 01:03:11 AM »
Thamk you for all of them!
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