Abstract
Argon ion bombardment of some rhenium trihalides Rex3 (X = CI, Br, I ) in a photoelectron spectrometer yielded lower valency rhenium halides. The presence of these new compounds was established on the basis of the destabilization of the Re(4f5,2,7,2) spin-orbit component's binding energies and the relative decrease of the halogen spectral lines' intensities. A linear correlation between the Re(4f) binding energies for each series of rhenium halides and the oxidation number was observed. A correlation between the Re binding energies and the Re charges, calculated by the extended Hiickel method, was noted.
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