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Logic Puzzle #8: Strong Coupling or Peak Overlap?

October 4, 2010
by Arvin Moser, Team Manager, Application Scientists, ACD/Labs

The goal of this puzzle is to distinguish between strong coupling and peak overlap.

For the following 1H NMR spectrum, are the 1H signals at 7.58-7.59 ppm exhibiting strong coupling or are they two overlapping multiplets or both?

Logic#8PeakOverlap1H_

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One Reply to “Logic Puzzle #8: Strong Coupling or Peak Overlap?”

  1. It does not look like exclusively strong coupling to me. For that magnitude of roofing I would expect the partner at about 7.7 ppm or closer.
    Other than classic experiments, a pure shift spectrum would help interpreting overlap situations.

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