Synthesis, Mössbauer and vibrational spectra of tin(IV) fluorosulphate and dichlorotin(IV) fluorosulphate

Abstract

The reaction of tin(IV) chloride with peroxydisulphuryl difluoride yields at 120° the new compound tin(IV) fluorosulphate according to SnCl₄+ 2S₂O₆F₂→ Sn(SO₃F)₄+ 2Cl₂. This species can interact with an excess of tin(IV) chloride in a comproportionation at room temperature to give dichlorotin(IV) fluorosulphate, SnCl₂(SO₃F)₂. Both compounds are thermally stable up to ca. 210°. On the basis of Mössbauer and vibrational spectra a polymeric chain or sheet type structure is suggested with bridging fluorosulphate groups.