Figure 10
From: Resonant X-ray photo-oxidation of light-harvesting iron (II/III) N-heterocyclic carbene complexes
Scheme and evidence of vibronic coupling observed in the Fe \(2p_{3/2}\) RPES data of both FeNHC complexes (a) Simplified Franck–Condon diagram highlighting the different relaxation possibilities after excitation into higher vibrational modes in the core-excited intermediate state. GS ground (initial) state, CE core excited intermediate state, FS final state. (b, c) show the binding energy evolution of the \({\hbox {t}_{{\rm{2g}}}}\) derived HOMO as a function of photon energy over the Fe \(2p_{3/2}\) \(\rightarrow\) \({\hbox {e}_{{\rm{g}}}}\) resonance for \({[\hbox {Fe}^{{{\rm{II}}}}(\hbox {btz})_2(\hbox {bpy})]^{2+}}\) and \({[\hbox {Fe}^{{\rm{III}}}(\hbox {btz})_3]^{3+}}\) respectively.
