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Which of the following produces a positive peak in a DEPT-135 spectrum?Select answer from the options belowCH2 quaternary carbon atoms (C with no protons).CH3 CH4Save for LaterSubmit Answer

Question

Which of the following produces a positive peak in a DEPT-135 spectrum?Select answer from the options belowCH2 quaternary carbon atoms (C with no protons).CH3 CH4Save for LaterSubmit Answer

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Solution

The DEPT-135 NMR spectroscopy technique is used to identify the types of carbon atoms in an organic molecule. In a DEPT-135 spectrum:

  • CH3 (methyl) and CH (methine) groups produce positive peaks.
  • CH2 (methylene) groups produce negative peaks.
  • Quaternary carbons (carbons with no attached protons) do not appear in the spectrum.

So, the answer to your question is CH3.

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