Crystal Structure and Magnetism of Potassium-Intercalated 2,7-Dimethylnaphthalene

The rich physical properties of metal-intercalated polycyclic aromatic hydrocarbon materials have recently attracted considerable attention. Crystals potassium-intercalated 2,7-dimethylnaphthalene were synthesized via solid phase reaction. combination XRD measurements and first-principles calculations indicated that each unit cell contains two potassium atoms four organic molecules. Magnetization revealed the samples show a Curie paramagnetism. Theoretical showed intercalated structure becomes metallic has local magnetic moment. Raman spectroscopy confirmed migration electron from 4s to carbon 2p orbital, which is source magnetism. Our research on naphthalene derivatives helpful for expanding range novel superconducting materials.