Sulfur chloride pentafluoride


Sulfur chloride pentafluoride is an inorganic compound with the formula. It exists as a colorless gas at room temperature and is highly toxic, like most inorganic compounds containing the pentafluorosulfide functional group. The compound adopts an octahedral geometry with symmetry. Sulfur chloride pentafluoride is the only commercially available reagent for adding the group to organic compounds.

Reactivity

In contrast to the high reactivity and toxicity of, sulfur hexafluoride, is inert and nontoxic despite having a closely related chemical formula. This difference highlights the lability of the S-Cl bond in this molecule.
Under free-radical conditions, adds across double bonds. The following reaction involves the reaction of propene:
The addition reaction is catalyzed by triethylborane| at around -30 °C. is used similarly.
is also a precursor to O2 and F2NSF5.

Synthesis

Sulfur chloropentafluoride can be synthesized by several routes, starting from two lower sulfur fluorides, sulfur tetrafluoride and disulfur decafluoride:
The corresponding is prepared similarly from in-situ generated bromine monofluoride.