XANES Pb LIII spectra of mixed-valence compound: minium, Pb3O4

Mixed-valence compound Pb3O4 (minium) has been studied using X-ray absorption near-edge structure (XANES) spectroscopy and DFT calculations. In spite of the presence of two valence states of lead [Pb(II) and Pb(IV)], the XANES spectrum of studied system is corresponding to apparently unified, an intermediate valence state of Pb. The explanation is related to the basics of XANES spectroscopy.