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November 01, 2025, 12:27:38 pm
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pHysiX

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C NMR
« on: May 26, 2009, 06:56:06 am »
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How many peaks are expected for C NMR for cyclohexanol, cyclohexan-1,2-diol, cyclohexan-1,3-diol and cyclohexan-1,4-diol?

I am thinking 3, 3, 4, 2.

Please help because initially, i managed to think of the spectrum correctly but doing it again, i got my answer wrong T_T.....

Thanks a heap in advance!

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Mao

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Re: C NMR
« Reply #1 on: May 26, 2009, 09:06:40 am »
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Cyclohexanol: 4
Cyclohexan-1,2-diol: 3
Cyclohexan-1,3-diol: 4
Cyclohexan-1,4-diol: 2
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mystikal

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Re: C NMR
« Reply #2 on: May 26, 2009, 01:46:47 pm »
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wow do we actually need to know the c nmr cylcohexane?
what about the H NMR of cylcohexane?
also what does the diol mean?
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ed_saifa

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Re: C NMR
« Reply #3 on: May 26, 2009, 01:53:33 pm »
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diol is two hydroxyl functional groups.
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pHysiX

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Re: C NMR
« Reply #4 on: May 26, 2009, 04:17:49 pm »
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would someone please explain cyclohexanol for me please? haha i can only seem to identify 3 different carbon environments >.<
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chem-nerd

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Re: C NMR
« Reply #5 on: May 26, 2009, 05:28:38 pm »
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C1 is the C with the OH attached

C2 and C6

C3 and C5

C4

=> 4 different environments
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pHysiX

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Re: C NMR
« Reply #6 on: May 26, 2009, 05:48:59 pm »
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y is C4 a different environment?

C3 and C5 both are attached to 2 hydrogens and are surrounded by 4 hydrogens. C4 is in that same configuration...

haha...is there meant to be some hidden catch with C NMR that my teacher left out? thanks again for the help. really appreciate it =] =] =]
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chem-nerd

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Re: C NMR
« Reply #7 on: May 26, 2009, 07:11:32 pm »
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not exactly the same question but it's similar enough that it should help you work it out

http://vcenotes.com/forum/index.php/topic,12787.msg143864.html#msg143864
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pHysiX

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Re: C NMR
« Reply #8 on: May 26, 2009, 07:28:11 pm »
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ooooo thanks chem nerd!!!!! legend!!!!
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monokekie

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Re: C NMR
« Reply #9 on: May 26, 2009, 09:21:49 pm »
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The diol part reminds me of diacid..


so how do you name diacids? for example HOOCCH2CH2COOH, is it called butanoic diacid? or dibutanoic acid?

anyone?
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ed_saifa

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Re: C NMR
« Reply #10 on: May 26, 2009, 09:35:41 pm »
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Butanedioic acid or the more common name succinic acid
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monokekie

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Re: C NMR
« Reply #11 on: May 26, 2009, 09:43:55 pm »
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 :Dtyty
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