PROPERTIES OF PERYLENE REACTED WITH ASF5

Perylene (Per) was reacted with AsF5 dissolved in liquid SO2 to produc e Per(AsF6)(2). Far infrared absorption showed absorption by AsF6-. Nu clear magnetic resonance of F-19 consisted of a quartet formed by indi rect nuclear-nuclear coupling. The change of mass through the reaction indicated the formula Per(AsF6)(2). Mass spectroscopy showed bonding between perylene and F and indicated no SO2 solvent in the sample. Thi s solvent-free material does not conduct electrically. X-ray diffracti on showed that the structure has an orthorhombic cell. Exposure to air changes the sample weight and colour, and results in conduction with semiconducting properties and reduced bonding between AsF6- and peryle ne.