Eur. Phys. J. D 16, 357-360 (2001)
https://doi.org/10.1007/s100530170129

Study of oxygen-C₆₀ compound formation by NEXAFS and RIXS

¹ Department of Physics, Uppsala University, BOX 530, S-75121 Uppsala, Sweden
² Department of Inorganic Chemistry, Uppsala University, BOX 538, S-75121 Uppsala, Sweden

Corresponding author: ^a Tanel.Kaambre@fysik.uu.se

Received: 4 December 2000
Published online: 15 September 2001

Abstract

The interaction of oxygen with C₆₀ molecules was studied on a C₆₀ film which had been exposed simultaneously to oxygen and UV-light for 190 hours, producing an approximately C₆₀O₁ stoichiometry in the bulk of the sample. C K-edge and O K-edge NEXAFS (using total fluorescence yield detection) and resonant X-ray inelastic scattering (RIXS) spectra from the sample film were measured and the C K-edge data were compared to the spectra from pristine C₆₀ as reference. The C K-edge absorption and emission spectral profiles of the oxygen-doped sample are similar to those of the C₆₀ reference, suggesting that cage breaking of C₆₀ under these conditions, if any, is negligible. However, the redistribution of intensities in the spectra indicates changes in the occupancies of different molecular orbitals, possibly due to changes in electron density upon reaction. Similarities of the O K-edge soft X-ray emission (SXES) spectra to several small oxygen-containing molecules is being discussed in terms of bonding models.