Figure 3
The difference Fourier maps of compound (I) refined with the (a) [SO4]2−, (b) [ClO4]−, (c) [PO3F]2− and (d) [PO2F2]− ligand. The regions of negative electron density are lighter (red in the electronic version of the paper) and the regions of positive electron density are darker (blue). All atoms are drawn as 50% probability displacement ellipsoids. All H atoms and the anions have been omitted for clarity. |