The Blue Xe_4~+Cation:Experimental Detection and Theoretical Characterization

摘要

Xenon cations can be considered the most simple compounds of this rare gas.Historically,the transient existence of a Xe~+ion in the reaction between Xe and PtF+6 marked the beginning of noble-gas chemistry.Later,the Xe_2~+ion was obtained,which is by now well-characterized,including by a single crystal structure determination on Xe_2~+Sb4F_(21)~-.The striking feature of this cation is its intense green color,which stems from an absorption in the red (705-715 mm).