Attempted synthesis of osmium(VI) and iridium(VI) thiofluorides; the preparation of OsF5·SF4 and IrF5·SF4

Abstract

The interaction of OsF₆ or IrF₆ with ZnS or B₂S₃ at elevated temperature yields the adducts OsF₅·SF₄ and IrF₅·SF₄ rather than the transition-metal thiofluorides. Infrared and X-ray powder diffraction studies indicate that the adducts have contributions to the bonding from the ionic formulations [SF₃]⁺[OsF₆]^– and [SF₃]⁺[IrF₆]^– and there is also ¹⁹F n.m.r. evidence for the latter in solution in anhydrous HF.