Tables VIII and IX list the vertical excitation energy at the SF and SO levels. We could not simply correlate the states calculated at the SO level with the states without the SOC (SF calculations) except for the ReF 6 case, where 2 E g → E 1/2,g , E 3/2,g is observed. Even if the degeneracy of states is the same, the electronic structure can differ. This is exemplified by the ground state of IrF 6 , which is the 4 A 2g and U 3/2,g states at the SF and SO levels, respectively.