Abstract

AbstractWF6, ReFn (n = 6 and 7), and XeF6 combined with NOF to give (NO+2) WF, (NO+)2ReF, and (NO+)2XeF2–8, respectively. Also NO2F reacted with ReF6 to form (No2+)ReF2–8. Cs2XeF8·4BrF5 crystallized from a solution of Cs2XeF8 in BrF5. These five compounds were subjected to X‐ray structure determinations. The structure of [NO(NOF)2]+IF–8 was used as a standard for comparison. All anions exhibit square‐antiprismatic geometry, independent of their electronic configurations. Bond lenghts in ReF2–8 and XeF2–8 are larger than in WF2–8 and IF–8, owing to the presence of nonbonding electrons. Deviations from the ideal structure in XeF2–8 are attributed to cation‐anion interactions.

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