The received ferromagnetic contribution in the nickel complex varies significantly, with extreme values of +205 cm -1 for the minimal active space and +11 cm -1 for the extended active space in the dihedral scan. The variability is much smaller in the copper case. This implies that spin polarization necessitates excitations into much higher lying orbitals in the copper system than in the nickel complex. This effect thus appears negligible for a cop-per complex with only one magnetically active orbital pair, but not for cases with multiple active orbital pairs. Similarly, we find that the derived antiferromagnetic contributions for both complexes in the NEVPT2 calculations change significantly between the two scanning procedures (copper: -210 to -148 cm -1 , nickel: -262 to -102 cm -1 ). With values ranging from -86 • 10 -3 to -4 • 10 -3 cm -1 , the δ-path in the nickel complex exhibits a similar trend, though its overall contribution remains irrelevant. We attribute these significant differences again to the lack of dynamic charge polarisation in the underlying model.