(a) Show which carbon atoms correspond with which peaks in the 13C NMR spectrum of butan-2-one (Figure...
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(b) Draw the proton NMR spectrum you would expect for butan-2-one. How well do the proton chemical shifts predict the carbon chemical shifts using the "15 to 20 times as large" rule of thumb?
Figure 13-45.
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13C NMR CH3 C CH2 CH TMS butan-2-one TMS 240 220 200 180 60 140 120 100 80 60 40 20 0 8 (ppm)
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