May 22, 2020
Journal Article

Analysis of X-ray adsorption edges: L2,3 edge of FeCl4-

Paul Bagus
Connie Nelin
Michel Sassi
Eugene Ilton

Abstract

We describe a detailed analysis of the features of the X-ray adsorption spectra at the Fe L2,3 edge of FeCl4. The objective of this analysis is to explain the origin of the complex features in relation to properties of the wavefunctions, especially for the excited states. These properties include spin-orbit and ligand field splittings where a novel aspect of the dipole selection rules is applied to understand the influence of these splittings on the spectra. We also explicitly take account of the intermediate coupling of the open core and valence shell electrons. Our analysis also includes comparison of theory and experiment for the Fe L2,3 edge and comparison of theoretical predictions for the Fe3+ cation and FeCl4 . The electronic structure is obtained from theoreticalwavefunctions for the ground and excited states.

Revised: May 22, 2020 | Published: December 12, 2017

Citation

Bagus P.S., C.J. Nelin, E.S. Ilton, M. Sassi, and K.M. Rosso. 2017. "Analysis of X-ray adsorption edges: L2,3 edge of FeCl4-." Journal of Chemical Physics 147, no. 22:Article No. 224306. PNNL-SA-131505. doi:10.1063/1.5006223