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1) a) The C=O carbonyl stretching frequency is a strong and distinctive stretching frequency in IR spectra. Provide a reasonable explanation, using resonance diagrams, as
1) a) The C=O carbonyl stretching frequency is a strong and distinctive stretching frequency in IR spectra. Provide a reasonable explanation, using resonance diagrams, as to why the observation of the C=O carbonyl stretching frequencies vary between the carbonyl groups shown here. b) Given the resonance forms you drew above for the amide, where would you expect the C-N bond of the amide to appear in an IR spectra - around 16901640cm1 ( C=N region) or around 13501000cm1 (C-N region)
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