Abstract
The action of bromine(1)fluorosulfate on graphite has led to the synthesis of several novel intercalation compounds. The intercalation of bromine(1)fluorosulfate at room temperature results in a first stage compound, C12BrSO3F, while at higher temperatures (~110 °C) C20BrF(SO3F)2 forms instead. Oxidation of C12BrSO3F with S2O6F2 yields C16Br(SO3F)3 and this reaction can be reversed by reacting the latter with an excess of Br2.Graphite trifluoromethylsulfate C12SO3CF3 is formed in the solvolysis of C12BrSO3F with an excess of trifluoromethyl-sulfuric acid. First stage nature of these compounds has been confirmed by the X-ray identity period along C axis and [Formula: see text], vibrational lattice mode in the Raman spectra. The use of 19F nmr in identifying the chemical species in the inter-lamellar space has been demonstrated. The planar electrical conductivity of these compounds has been observed to be three to six times higher than that of graphite.
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