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Updated: Jun 11, 2025

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Published on: April 9, 2018
Streamlining Thionyl Tetrafluoride (SOF4) and Pentafluoro-Oxosulfate [OSF5]- Anions Syntheses
Johanna S Sturm1, Alexandre Millanvois1, Carlota Bahri1
1Fachbereich Biologie, Chemie, Pharmazie Institut für Chemie und Biochemie -, Anorganische Chemie Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany.
Abstract:
A one pot room temperature synthesis of thionyl tetrafluoride (SOF4) from elemental fluorine (F2) and thionyl fluoride (SOF2) is reported. The selective decagram scale process (100 mmol) allows a quantitative preparation of SOF4 with high purity. The solid-state structure has also been elucidated and compared with the reported gas phase one. The use of this reagent for the formation of the emerging pentafluorooxosulfate [cat][OSF5] anions led to the preparation of multiple ion-pairs (cat=Ag, NEt3Me, PPN, PPh4) in different organic solvents. The SuFEx reservoir ability of this anion was studied and by tuning the solvent system, the reactivity of pure thionyl tetrafluoride was observed using Ag[OSF5] in THF and acetone.
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