Organic Chemistry (8th Edition)

Published by Pearson
ISBN 10: 0321768418
ISBN 13: 978-0-32176-841-4

Chapter 6 - Alkyl Halides: Nucleophilic Substitution and Elimination - Problems - Page 239: Problem 6-16 b

Answer

$(CH_3)_2S$ is a better nucleophile.

Work Step by Step

In $(CH_3)_2S$ and $(CH_3)_2O$, $S$ is larger than $O$, so it is more polarizable. Hence, $(CH_3)_2S$ acts as a better nucleophile in the $S_N2$ reaction.
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