Kr Extended X-ray Absorption Fine Structure Study of Endohedral Kr@C₆₀

Abstract

An EXAFS study has been performed at the K-edge of Kr atoms in C60 cages. Single-scattering peaks yield the radius of the C60 cage as “seen” by the inserted krypton atom. Peaks assigned to multiple scattering, located from 4 to 5 Å in the radial distribution functions, gave an indication about a rotation of the cage, in the solid, similar to that proposed for empty C60.