Graphite intercalation with perfluoroalkylsulfonates, and perfluoroalkylsulfonyl imides and methide

The graphite intercalation compounds CxC8F17SO3.F-y and CxN(CF3SO2)(2) are prepared in 48 % hydrofluoric acid, using the oxidant K2MnF6 under ambient conditions. Analyses of PXRD peak position and periodic oscillation of the peakwidth indicate that the stable product CxC8F17SO3. 4F is comprised of a random solid solution of stage 2 and 3. The addition of cone. HNO3 or fuming H2SO4 to 48% aqu. HF produces a stage 2 GIG. Structure refinement indicates a helical conformation of the anion. Stage 2 CxN(CF3SO2)(2) (x = 37) is obtained within 15 minutes under ambient condition in 48% aqu. HE The anion orientations for these GICs are evaluated by structural refinement. Larger anions containing -CnF2n+1SO2 substitutents can also be intercalated.