Expanding the Realm of Intercalation Chemistry: The Synthesis of Graphite and Metal Dichalco-genide Intercalates Containing Aromatic Hydrocarbons and Buckminster-fullerene, and the First Intercalates of Layered Metal Halides

Abstract

Abstract Methods have been developed for the synthesis of novel intercalates of graphite, metal dichalcogenides (MY2: M = Ti, Ta; Y = S, Se; M = Nb; Y = Se, Te) and metal halides CuCl2; MBr2: M = Ni, Cu, Cd; CdI2). Aromatic hydrocarbons (pentacene (PEN), tetracene (TET), anthracene (ANT), 9,10-dichloroanthracene (DCA), and 9,10-dibromoanthracene (DBA)) have been intercalated into graphite, and PEN, TET, ANT have been intercalated into the metal dichalcogenides. Dibenzotetrathiafulvalene has been intercalated into MY2 (M = Ti, Ta; Y = S, Se). In addition, C60 intercalates of TaS2 and graphite have been prepared. Tetracyanotetrathiafulvalene was intercalated into 5 metal dihalides, forming the first known intercalates of these materials. The intercalates were structurally analyzed by X-ray powder diffraction, and the compositions determined experimentally. For all intercalates, the observed stoichiometries were in good agreement with those predicted from the X-ray data. The results of resistivity and magnet...