Consider the NMR spectrum shown below. The integration values are not normalized

Question

Consider the NMR spectrum shown below. The integration values are not normalized. Normalize each integration by dividing each integration value by the lowest integration value. Do your values add up for the correct number of hydrogen? If not, multiply each value by a common number to get the correct total number of hydrogen represented. Calculate the coupling constant (J) for the NMR signal at delta 6.4 ppm shown below. A 500 MHz instrument was used to record the spectrum. You will find that this is a typical coupling constant for trans-alkenes.

Explanation / Answer

3.

o.153/ 0.153 = 1H X 2 =2

0.230/0.153 = 1.5H X 2 =3

0.230/0.153 = 1.5H X 2 =3

TOTAL HYDROGENS ARE 8

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