Synthesis,properties, and structure of intercalated graphite fluosulfonate fluorides

Graphite fluosulfonate fluorides of the composition C₂F_x−y(SO₃F)_y (x+y≈1) have been synthesized. The new compounds can be treated as derivatives of graphite fluorides C₂F_x(x≈1) in which approximately 1/50 of the F atoms have been replaced by SO₃F groups. The intercalates based on the new matrices have been studied by X-ray phase analysis, IR spectroscopy, mass spectrometry, and thermography. The ability of the intercalates to absorb various substances is investigated. It is shown that the introduction of a few SO₃F groups into the C₂F_x matrices significantly changes the physicochemical properties and the structure of intercalates; in particular, for intercalates of stage II structure this expands the scope of substances that can penetrate into interlayer spacings. The dependence of the penetration ability of the substances on the van der Waals sizes of their molecules makes intercalates resemble zeolites in properties. Institute of Inorganic Chemistry, Russian Academy of Sciences, Siberian Branch, Novosibirsk. Translated fromZhurnal Strukturnoi Khimii, Vol. 36, No, 1, pp. 144–151, January–February, 1995 Translated by I. Izvekova