Bromopentafluorobenzene is an organofluorine compound with the formula C<sub>6</sub>F<sub>5</sub>Br. It is a colorless liquid that is used to prepare pentafluophenyl compounds. These syntheses typically proceed via the intermediacy of C<sub>6</sub>F<sub>5</sub>Li or the Grignard reagent. Illustrative is preparation of tris(pentafluorophenyl)borane:
Other derivatives include LiB(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>, [CuC<sub>6</sub>F<sub>5</sub>]<sub>4</sub>, and Ni(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>(dioxane)<sub>2</sub>.