Figure 6
Molecular orbital diagram of PPh3 and PPh4+ from DFT calculations. Kohn–Sham orbitals of the highest occupied and lowest unoccupied molecular orbitals are shown on the left (PPh3) and right (PPh4+). Unoccupied MOs depicted in red are those involved in the calculated P K-edge XAS transitions (TDDFT) in Fig. 7. |