Electronic and EPR spectra of the species involved in [W10O32](4-) photocatalysis. A relativistic DFT investigation

The decatungstate anion [W10O32](4)-is widely used as a photocatalyst in different transformations, during which it undergoes one-electron reduction to [W10O32](5-), possibly protonated; the bi-reduced species [W10O32](6-) is obtained by ensuing disproportionation. Relativistic DFT calculations were used to predict the UV-VIS spectra and EPR parameters of all such species.