In distinguishing 1-hexene, cis-3-hexene, and 3-methylene pentane, which is better, ¹H or ¹³C NMR spectroscopy? Explain your answer.

• A. ¹H is better to use than ¹³C because if you look at the number of signals in the spectrum, in the ¹³C spectrum, we can distinguish the three (3) different numbers of signals for each given molecule, while for ¹H spectrum, we can only distinguish 1-hexene (7 signals) and the other two would have the same number of signals (4 signals each).
• B. ¹H is better to use than ¹³C because if you look at the number of signals in the spectrum, in the ¹H spectrum, we can distinguish the three (3) different numbers of signals for each given molecule, while for ¹³C spectrum, we can only distinguish 1-hexene (7 signals) and the other two would have the same number of signals (3 signals each).
• C. ¹³C is better to use than ¹H because if you look at the number of signals in the spectrum, in the ¹³C spectrum, we can distinguish the three (3) different numbers of signals for each given molecule, while for ¹H spectrum, we can only distinguish 1-hexene (7 signals) and the other two would have the same number of signals (3 signals each).
• D. ¹³C is better to use than ¹H because if you look at the number of signals in the spectrum, in the ¹H spectrum, we can distinguish the three (3) different numbers of signals for each given molecule, while for ¹³C spectrum, we can only distinguish 1-hexene (7 signals) and the other two would have the same number of signals (4 signals each).

Answer: (C)