The Three Isomers of Dimethylbenzene Are Commonly Named O-Xylene, M-Xylene

question 32

Essay

The three isomers of dimethylbenzene are commonly named o-xylene, m-xylene, p-xylene. These three isomers are difficult to distinguish using ¹H NMR, but they can be easily identified using ¹³C NMR.
Describe how ¹³C NMR distinguishes these three isomers.

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