The electronic structure of UCl₆: Photoelectron spectra and scattered wave Xα calculations

Helium I and II excited photoelectron (p.e.) spectra of UCl₆ are reported. Experimental ionization energies agree well with those predicted by a quasirelativistic scattered wave Xα calculation; further support for the proposed assignments is provided by a consideration of intensity patterns in the spectra. Attention is ultimately focused on the relationship between ionization energies and charge transfer electronic excitation energies in hexahalo complexes. Further experimental work is required to establish an assignment for the electronic absorption spectrum of UCl₆.