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Chapter 14: Q46P (page 665)
What does cross peak X in figure tell you?
Hydrogen having signal at in NMR spectrum has a bond with the carbon atom having signal at in NMR spectrum.
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Describe the proton-coupled 13C NMR spectra for compounds 1, 3, and 5 indicating the relative positions of the signals.
Which underlined proton (or sets of protons) has the greater chemical shift (that is, the higher frequency signal)?
How can theirNMR spectra distinguish the following compounds?
The 1 H NMR spectra of two carboxylic acids with molecular formula C3H5O2Cl are shown below. Identify the carboxylic acids. (The “offset” notation means that the farthest-left signal has been moved to the right by the indicated amount to fit on the spectrum; thus, the signal at 9.8 ppm offset by 2.4 ppm has an actual chemical shift of 9.8 + 2.4 = 12.2 ppm.)
Identify the compound with a molecular formula that gives the following DEPT 13C NMR spectrum:
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