For elements Rb–Rn, all the Karlsruhe “def2” basis sets are paired with a
common set of ECPs.
1288
Phys. Chem. Chem. Phys.
(2005),
7,
pp. 3297.
Link
It is briefly summarized in the table
below (the number of valence basis functions depend on the basis set in use,
so it is not presented):
| Element | Core | Max Projector |
|---|---|---|
| H–Kr | none | none |
| Rb–Xe | [Ar]+3d | |
| Cs–La | [Kr]+4d | |
| Hf–Rn | [Kr]+4d+4f |