Where Should I Zero the NMR Spectra of Dimethylacetamide in CDCl3?

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SUMMARY

The discussion centers on the proper zeroing of NMR spectra for Dimethylacetamide (DMA) in CDCl3. Participants highlight the absence of TMS (Tetramethylsilane) as a reference point, which is crucial for accurate chemical shift calibration. The recommendation is to use 3% TMS in CDCl3 to establish a reliable baseline for zeroing the spectra. This ensures that the peaks corresponding to DMA are accurately represented in the NMR analysis.

PREREQUISITES
  • Understanding of NMR spectroscopy principles
  • Familiarity with chemical shift referencing
  • Knowledge of Dimethylacetamide (DMA) and its spectral characteristics
  • Experience with solvent effects in NMR, specifically CDCl3
NEXT STEPS
  • Research the role of TMS in NMR spectroscopy
  • Learn about chemical shift calibration techniques in NMR
  • Explore the spectral characteristics of Dimethylacetamide
  • Investigate solvent effects on NMR spectra, focusing on CDCl3
USEFUL FOR

Chemists, researchers in organic chemistry, and students conducting NMR analysis of organic compounds will benefit from this discussion.

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Homework Statement


I have a spectra of the NMR, I'm just confused on where to `zero' the spectra at?

Homework Equations


The Attempt at a Solution


There are two peaks around zero in the spectra (one is bigger than the other but not by much). Also the two peaks are much much smaller than the peaks I know are Dimethylacetamide. I just don't know where to zero it.

Any help is appreciated
 
Last edited:
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So, you didn't put any TMS in your CDCl3?
 
We used 3% TMA?
 

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