determine the number of signals expected in the proton NMR for the compound CH b

Question

determine the number of signals expected in the proton NMR for the compound CH b. OH c. Deemine the number of signals expected in the proton NMR for the compounds NO2 a. b. CH3 0 CHa c. CH2O Proton NMR- Integration number of hydrogens responsible for each signal can be deduced from integrating (inding ret underneath) each signal. This is usually done electronically by the spectrometer producing ration curves (blue sigmoidal curves) shown in the spectrum below. Using a ruler you measure ight of each integration curve. Dividing each result by the sm number of hydrogens responsible for each signal. In the spectrum below eight of 1.2 cm, while the other three ha a height of 1,2 cm, smallest height will tell you the three signals Ti Yhils the other three have heights of 3.6 cm. Dividing all of the heights t nd the other three are due to

Explanation / Answer

Spectral analysis

12. the number of signals expected for the given compounds in the proton NMR would be

a. 3 signals

All in aromatic region in ratio 1 : 2 : 1

b. 3 signals

CH3's (6H), CH2's (4H), alkenic CH's (2H) (ratio 3 : 2 : 1)

c. 4 signals

in ratio 3 : 1 : 2 : 2

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