Abstract
Electron oxidation of the fluoro-aromatics C/sub 6/F/sub 6/ and C/sub 10/F/sub 8/ by O/sub 2//sup +/ salts yields salts of the radical cations C/sub 6/F/sub 6//sup +/ and C/sub 10/F/sub 8//sup +/ which are Curie-Law paramagnets. The fluoro-analogs of the ''metallic'' (C/sub 10/H/sub 8/)/sub 2//sup +/ salts do not exist. Repulsive interactions involving the electron-rich fluorine ligands of the fluoro-aromatics are probably responsible for the failure of these species to make metallic stacks. Attempts to prepare C/sub 6/H/sub 6//sup +/ salts have given the poly(paraphenylene) cation salts (C/sub 6/H/sub 4/)/sub n//sup +/AsF/sub 6//sup -/ which are good electronic conductors. Electron oxidation of polynuclear aromatics by C/sub 6/F/sub 6//sup +/ salts or by AsF/sub 5/, e.g., 3AsF/sub 5/ + 2C/sub 24/H/sub 12/ ..-->.. 2C/sub 24/H/sub 12//sup +/AsF/sub 6//sup -/ + AsF/sub 3/, yields what appear to be salts of the polynuclear aromatic cations. The magnetic and electrical properties of such salts are described. 16 refs., 2 figs.
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