Although, complexes 1 and 2 display differences in the
nature of the bonds, the overall bonding properties of Bk(IV) are quite
the same (Table S8, ESI). This means that the ‘availability’ of Bk(IV)
to form Bk–O bonds is essentially the same, but the way it forms those
bonds is tunable. It would be interesting to see if this holds for
Bk(IV) bonds other than oxygen-donor ligands.