Complete active space self-consistent field (CASSCF). Spin-orbit CASSCF calculations were performed in ORCA 5.0.2 at the PBE0/TZVP level of theory (except H atoms for which we used the small SVP basis set). Scalar relativistic effects were included via the Douglas-Kroll- molecule in the equatorial plane of the molecule. C) A table of bond lengths for the metal complex is provided for comparison with the Cf complexes reported here, as well as similar Am complexes reported in the literature.