Synthesis and structure of the adduct Cl3AsO·AsF5

Abstract
The relatively thermally stable adduct Cl3AsO·AsF5 1 is prepared in high yield from AsCl4 +AsF6 and Me3SiOSiMe3 in liquid SO2 at –40 °C, and originally surprisingly isolated from the reaction of PrCl3 and AgAsF6 in liquid SO2; the X-ray crystal structure of 1 is compared with that of Cl3PO·AsF5.

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