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(Solved): 13. The \( { }^{1} \mathrm{H} \) NMR spectrum of [14] annulene at \( -60^{\circ} \mathrm{C} \) show ...
![13. The \( { }^{1} \mathrm{H} \) NMR spectrum of [14] annulene at \( -60^{\circ} \mathrm{C} \) shows two signals, one at \( 0](https://media.cheggcdn.com/study/9ad/9ada4439-54d1-489a-893c-56e62987057f/image)
13. The \( { }^{1} \mathrm{H} \) NMR spectrum of [14] annulene at \( -60^{\circ} \mathrm{C} \) shows two signals, one at \( 0 \mathrm{ppm} \) and one at \( 7.6 \mathrm{ppm} \). Answer the following questions: \( (4 \times 5 \) ? \( =20 \) points) a) Is [14]annulene aromatic? b) What are the two signals? c) What ratios are expected between those two signals? d) What will be happen in those signals at high temperature?