Synthesis of coordinatively saturated complex fluoro cations

424 I-2

SYNTHESIS K. 0. Christe* Rocketdyne, (U.S.A.)

OF COORDINATIVELY

SATURATED

COMPLEX

FLUORO

CATIONS

and W. W. Wilson A Division of Rockwell

International

Corporation,

Canoga Park, CA 9 1304

Only three coordinatively saturated complex fluoro cations, C1F6+, BrFC+ and_NF4+ are presently known. Their syntheses are difficult since the corresponding parent molecules do not exist. The presently known methods for their syntheses are discussed and include recent results from our labgratory on the preparation of ClFCBF4 and NF4 salts using the KrF+ cation Cl FCSbFg , cl F&F6, as the oxidative fluorinator. A unifying concept is proposed for all known reactions leading to the syntheses of coordinatively saturated complex fl uoro cations.