5. Consider the molecular formula of C,H,O a) Draw three constitutional isomers with this formula. b) Predict the chemical shift for each proton in each of the compounds you drew in part a). c) NMR and IR spectra were measured for a compound with the formula C,H,O, and the following was observed: 'H NMR & 5.21 (s); IR (diagnostic region) 1770 cm-', 3068 cm-' and 3096 cm-'. Which of the structures you drew in part a) would be most consistent with this data, briefly explain your reasoning?

Organic Chemistry
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Chapter13: Nuclear Magnetic Resonance Spectroscopy
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5. Consider the molecular formula of C,H,O
a) Draw three constitutional isomers with this formula.
b) Predict the chemical shift for each proton in each of the compounds you drew in part a).
c) NMR and IR spectra were measured for a compound with the formula C,H,O, and the following was
observed: 'H NMR & 5.21 (s); IR (diagnostic region) 1770 cm-!, 3068 cm-1 and 3096 cm-'. Which of the
structures you drew in part a) would be most consistent with this data, briefly explain your reasoning?
Transcribed Image Text:5. Consider the molecular formula of C,H,O a) Draw three constitutional isomers with this formula. b) Predict the chemical shift for each proton in each of the compounds you drew in part a). c) NMR and IR spectra were measured for a compound with the formula C,H,O, and the following was observed: 'H NMR & 5.21 (s); IR (diagnostic region) 1770 cm-!, 3068 cm-1 and 3096 cm-'. Which of the structures you drew in part a) would be most consistent with this data, briefly explain your reasoning?
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Constitutional isomerism: The compounds with same molecular formula with different connectivity of atoms, are called as constitutional isomers.

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