Illustrated Glossary of Organic Chemistry

2,2,2-Trifluoroethoxide ion: CF₃CH₂O^-; the conjugate base of trifluoroethanol. Unlike most other alkoxide ions, CF₃CH₂O^- is a weak base and poor nucleophile due to the electron-withdrawing inductive effect of the trifluoromethyl group.

Lewis structure for the trifluoroethoxide ion.