The Chemistry of Sulfur Tetrafluoride.¹ IV. Fluorination of Inorganic Oxides and Sulfides

The Chemistry of Sulfur Tetraflouride

“…Sulfur tetrafluoride is a versatile reagent for preparing a wide range of inorganic fluorides by replacement of oxygen or sulfur in inorganic compounds [41]. Examples of binary fluorides prepared from oxides and SF4 include u F 6 , WF6, IF5, SeF4, and GeF4.…”

“…Thus, chromyl fluoride (Cr02F2) is readily obtained by passing SF4 over anhydrous CrO3 at 5 "C 1421. The reaction of S F 4 with uranium(V1) oxide offers a convenient method for the synthesis of uranium hexafluoride in the laboratory [41,45]. Plutonium tetrafluoride can also be prepared readily by fluorination of the corresponding oxide with SF4 at 500 "C. Sulfur tetrafluoride is oxidized by peroxydisulfuryl difluoride ( F S 0 2 0 0 S 0 2 F ) at 128 "C to give a single product incorporating both reactants.…”

“…Sulfur tetrafluoride interacts with certain inorgarlic fluorides that are Lewis acids to form solid "adducts" [22,41,51,. The known adducts in approximate order of decreasing stability are SbF53F4, AsF55F4, IrFySF4, BF33F4, PFySF4, GeF4.2 SF4, and AsF3.…”

A new synthetic route to rhenium and iodine oxide fluoride anions: The reaction between oxoanions and sulfur tetrafluoride

“…[1] The utility of SF 4 in inorganic chemistry had been explored for converting metal oxides to fluorides at high temperatures and pressures. [2] For example, Bi 2 O 3 , TiO 2, U 3 O 8 , and HgO are fluorinated by SF 4 to BiF 3 (Eq. 1), TiF 4 , UF 6 , and HgF 2 , respectively.…”

THEORETICAL STUDY ON THE ADDUCTS OF SF4 WITH AsF5 AND SbF5

“…It can be used as a fluorinating agent in the preparation of a wide range of inorganic fluorinecontaining compounds, such as IF 5 , SeF 4 , SnF 4 , MoF 6 and UF 6 in high yields by fluorination of I 2 O 5 , SeO 2 , SnS 2 , MoO 3 and UO 3 respectively at 250-350ºC in pressure vessels. 1 The reactions are characterized by replacing O or S with F to produce corresponding fluorides or in some cases oxyfluorides. Bartlett et al reported that SF 4 can form solid complexes with a number of inorganic fluorides, e.g., SF 4 ·BF 3 , SF 4 -is in equilibrium with its components in the gas state and has a vapor pressure of approximately 100 mmHg.…”