Chainlike Structure Formed in Iodine Monochloride Graphite Intercalation Compounds

The structure of iodine monochloride (ICl) intercalated into graphite (GIC) has been revisited, and a stage 1 stoichiometry about 10 carbon atoms to ICl molecule is determined. Intercalation proceeds readily at room temperature without additional energy input. A chainlike alternating halogen species proposed for the intercalation layer based on detailed Raman spectroscopic analysis ab initio calculations. Long-range ordering observed, reaching beyond one carbon. calculated density states shows p-doping layers upon intercalation, in agreement with analysis. reversible heating can be cycled several times. While chains have observed other nanocarbons, first example extended graphite. Indeed, intercalant phases acceptor GICs rarely studied date, current findings are potential interest structural chemistry, materials science, solid-state batteries, areas.