April 25, 2024, 07:52:55 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Two Unknowns with Spectra  (Read 3290 times)

0 Members and 1 Guest are viewing this topic.

Offline mbrewster

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Two Unknowns with Spectra
« on: April 23, 2016, 11:35:29 AM »
Hello everyone,

I am new to this forum, and am curious if I could have some help analyzing two unknowns. I have a couple guesses as to what they could be, but would also be curious for some input as well. The first is a liquid compound, and I ran an IR, 1H NMR, C13 and DEPT. I know that this is some sort of ethyl ester, and I initially thought ethyl acrylate. But I am curious about all of the CH's on the DEPT. Could this indicate a benzene even though the overtones do not show up on IR? I have attached images of my spectra to this post.


I greatly appreciate any feedback! Thank you for your time!
Logged

Offline critzz

  • Full Member
  • ****
  • Posts: 99
  • Mole Snacks: +7/-0
  • Gender: Male
Re: Two Unknowns with Spectra
« Reply #1 on: April 23, 2016, 06:30:11 PM »
Generally, NMR-spectra are much more reliable than IR-spectra for assigning a compound. This IR-spectrum's quality in particular does look a bit off. :P

The H-NMR does also give a clue.

Logged

Offline mbrewster

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: Two Unknowns with Spectra
« Reply #2 on: April 23, 2016, 10:47:15 PM »
What clue is it that you see? I'm not sure what you mean...
Logged

Offline critzz

  • Full Member
  • ****
  • Posts: 99
  • Mole Snacks: +7/-0
  • Gender: Male
Re: Two Unknowns with Spectra
« Reply #3 on: April 24, 2016, 03:33:10 PM »
An integral of ~5.0 at around 7 ppm. By the way, you did measure your sample in deuterated chloroform right?
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links