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Topic: CNMR Problem  (Read 2947 times)

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Offline spas105

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CNMR Problem
« on: December 15, 2010, 08:03:11 PM »
C9H12O3

161 C (3)
93  CH (3)
55  CH3 (3)

anyone know the structure ?

PS: (3) means there's 3 of them and they're equivalent...I'm sure most of you knew that tho.
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Offline MissPhosgene

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Re: CNMR Problem
« Reply #1 on: December 15, 2010, 08:18:27 PM »
What have you figured out so far?

Hint: it's a trisubstituted benzene.
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Stereograms of the 32 crystallographic point groups: little bike wheels of cold, hard, pure rationality.

Offline spas105

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Re: CNMR Problem
« Reply #2 on: December 15, 2010, 08:37:23 PM »
I kind of thought that it was a benzene since it has a du of 4 ....then the 161 points to esters and the 55 points to the ch3's bonded to the oxygens...i guess i didnt know how to arrange them on the ring so that everything was equivalent
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Offline MissPhosgene

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Re: CNMR Problem
« Reply #3 on: December 15, 2010, 09:05:12 PM »
The peak at 161 ppm does not correspond to an ester.
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Stereograms of the 32 crystallographic point groups: little bike wheels of cold, hard, pure rationality.
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