Crystal structure of µ-fluorosulphato-bis[fluoroxenon( II )] hexafluoroarsenate( V )

The crystal structure of [(XeF)2SFO3][AsF6] has been determined from three-dimensional X-ray counter data. Crystals are monoclinic with a= 11.178(5), b= 8.718(5), c= 11.687(6)Å, β= 91.28(4)°, U= 1 132 Å3, Z= 4, and Dc= 3.45 g cm–3. The structure has been refined in the space group P21/n to a final conventional R′ of 0.87 for 1 147 independent reflections. The structure consists of discrete [(XeF)2SFO3][AsF6] units with no cation–anion contact less than 3.0 Å. The cation consists of a nearly tetrahedral fluorosulphate group having a Xe–O bond to each Xe–F group. The two linear F–Xe–O groups are slightly staggered with respect to each other.