Actinides phase hexafluorides

Figure 1. Electronic energy level diagram for gas phase actinide hexafluorides. The regions in which a given hexafluoride exhibits continuous absorption are shown shaded with diagonal lines. 5f electron states are shown as short horizontal lines. The thermodynamic dissociation limits and resultant gas phase products are shown to the right of the energy level diagram for each hexafluoride. UF (g), a 5f system, has no low-lying electronic levels and is thermodynamically more stable than NpF (g) or PuF Cg). For these reasons UF is unlikely to be a good model compound for transuranic hexafluoride photochemistry studies.

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