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

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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.