Beyond holo/hemidirectionality in Pb(II) complexes: Can the valence lone pair be bisdirected?

In this contribution, we investigate, by means of Density Functional Theory computations coupled to the analysis of the Electron Localisation Function (ELF), a new possible topology of the Pb2+ valence lone pair. The possibility of bisdirectionality is uncovered for the first time and reveals another character of lead complexes beyond holo/hemidirectionality.