Hello everyone
So i am seeking some help regarding my upcoming report (attached file).
C12H14O4
DBE=6
From the IR-spectrum we have no peak above 3000cm-1 which indicate no C=C double bonds (or aromatic rings). The peak at 1724 should indicate ester or ketone. But in the H-NMR we got signals at 7.4 - 8.6 ppm interval which would likely indicate an aromatic ring which do not corresponds with the IR-spectra (no peak above 3000).
C-NMR shows signals about 165ppm which could indicate a ketone. and about 130ppm which could again indicate an aromatic ring.
From the mass spectra its correspond well with an ester.
So i am little bit confused is it an arotamic, aliphatic, ester or ketone?
Hope someone could help. Thank you.
Hi Mehrad,
based on what I could see in the attached copy, I guess: 1,3-Benzenedicarboxylic acid, diethyl ester
Regards
Markus
To Mehrad Rk
How could you say the below line for Mass data ?
"From the mass spectra its correspond well with an ester"
Hi Mehrad,
Marvin Sketch (for 1HNMR and 13CNMR).
IR + MS (NIST webbook)
But such a program is of no use to you if you don't know what your potential structure might look like. There only helps practice, practice, practice ....
You need to get a sense of what structural class it might be. At first glance, you must be able to recognize the essential structural elements from the spectra. Everything else is fine tuning.
Regards
Markus
Hi Markus Christ
i have a similar report would you mind helping me with it?
Nicole
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