Sulfur trifluoride is the inorganic chemical compound with the formula SF<sub>3</sub>. It is a radical.
Sulfur trifluoride is predicted to be pyramidal.
is generated by irradiation of crystals of trifluorosulfonium tetrafluoroborate with gamma rays.
== == A derivative formally derived from is the coordination complex Ir(Cl)(CO)(F)(SF<sub>3</sub>)(Et<sub>3</sub>P)<sub>2</sub> obtained by oxidative addition of sulfur tetrafluoride to Ir(Cl)(CO)(PEt<sub>3</sub>)<sub>2</sub> (Et = C<sub>2</sub>H<sub>5</sub>).