Reports of superconductivity in KxPicene spurred interest in alkali-intercalated polyaromatic hydrocarbon (PAH) compounds, but their compositions and structures have remained unclear. Now crystalline K2Pentacene and K2Picene — neither of which are superconducting — have been prepared by mild synthesis. Structural analysis shows that the cation sites arise within the molecular layers from reorientation of the PAHs within a herringbone packing.
- F. Denis Romero
- M. J. Pitcher
- M. J. Rosseinsky
