Chromium(VI) Oxyfluoride Dianions, [Cr2O4F6]2− and [CrO2F4]2−; Syntheses and Structures of [XeF5]2[Cr2O4F6], [XeF5]2[Cr2O4F6] ⋅ nX (X=HF, n=4; X=XeOF4, n=2), and [XeF5][Xe2F11][CrO2F4]

The fluorobasic character of the strong oxidative fluorinator, XeF6, and the oxidative resistance of the [XeF5]+ and [Xe2F11]+ cations have been exploited for the syntheses of several novel Cr(VI) dianion salts. The reactions of XeF6 and CrO2F2 in anhydrous HF and by direct fusion of the reactants i...

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