Figure 6
From: Resonant X-ray photo-oxidation of light-harvesting iron (II/III) N-heterocyclic carbene complexes
Valence band spectra of \({[\hbox {Fe}^{{{\rm{II}}}}(\hbox {btz})_2(\hbox {bpy})]^{2+}}\), extracted from the RPES maps in Fig. 5 at key resonant transitions. Also included are off-resonance valence band spectra measured in the pre-edge region (dashed lines) and at lower photon energy. The corresponding photon energy of each spectrum is indicated in the key. Features attributed to participant enhancement of frontier molecular orbitals are labelled A–E, and connect to the labelling of the representative molecular orbitals in Fig. 4. The contribution to the C 1s RPES originating from direct C 1s photoemission from 2nd order light is also labelled.
