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4 cards from this section. Quick, good the night before a test.
What is NMR used for?
Think about what information can be gathered about molecules.
Define chemical shift.
Consider how electron density affects the nucleus.
What does NMR stand for?
What type of properties does it investigate?
True or False: Chemical shifts are measured in hertz.
This is about how resonance frequencies are expressed relative to a reference compound.
An organic compound shows three distinct NMR peaks at 1.2, 2.3, and 7.5 ppm. If the integration of these peaks gives 3:2:1 ratios, calculate the corresponding number of protons for each peak.
Consider the relative positions and environments of the protons.
If an NMR spectrum yields a peak for 6 equivalent protons at 0.9 ppm and a neighboring peak for 3 protons at 1.2 ppm with splitting, what does this imply about the molecular structure?
Evaluate the relationship of equivalent protons and their neighbors using the 'n + 1' rule.
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