Fig. 2: The energy gap between HOMO and LUMO of [Th13(O)8(OH)24]12+.
From: Nickel Ion Induced Multistage Assembly of Th13 Cluster

The energy level (eV) of MOs for the inner core [Th13(O)8(OH)24]12+ cluster and the representative MOs for each energy level band at the bp86/ECP78MWB/6-31 G(d) level of theory.