Fig. 9. Electron Localisation Function (ELF) diagram (top) and ∇2ρ contour line diagram (bottom) of the (py)OUO–Zn fragment in complex 6 (ZnCl) (length unit: Bohr). The value of ELF is given by the colour scale. For the ∇2ρ diagram, blue points are BCPs, solid lines and dotted lines represent positive and negative values of the Laplacian of the electron density.
