Evaluation of Mn3s X-ray photoelectron spectroscopy for characterization of manganese complexes

The Mn2p and Mn3s X-ray photoelectron spectra (XPS) of manganese(II), manganese(III) and manganese(IV) complexes with a variety of coordination structures were measured. Compared with the data for peak positions of Mn2p XPS, those of Mn3s XPS are found to be strongly influenced by the formal charge of the central manganese ion: the peak positions are shifted to higher energies with an increase in oxidation state. In addition, the shapes of Mn3s XPS may be also influenced by the coordination structures of the manganese complexes.