Which item is not nucleophilic? a proton a carbanion an imidazole?

Question

Rihanna King

Chemistry

31 December, 13:12

Which item is not nucleophilic? a proton a carbanion an imidazole?

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Answers (1)

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Melvin Watts · Answer 1

The term "nucleophilic" describes substances that have excess electron pairs that they want to donate or share.

A proton does not have any excess electron pairs, so it is not nucleophilic.

A carbanion has a pair of excess electrons on a carbon atom, so it is nucleophilic.

An imidazole has excess electrons on its nitrogen atom, so it is nucleophilic.

Therefore, only the proton is not nucleophilic.