Fig. 1: Structure and electronic properties of PtW6O24.
From: Pt-O bond as an active site superior to Pt0 in hydrogen evolution reaction

a The ball and stick representation of PtW6O24 with the corresponding semitransparent map of molecular electrostatic potential (MEP). b, c High-resolution XPS spectra of Pt and O for PtW6O24. d 3D representation of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) for [H6PtW6O24] and [H6PtW6O24]2e. Additional reduced states are given in Supplementary Fig. 14. e Full and one-half views of the MEP distribution for [H6PtW6O24] and [H6PtW6O24]2e: the red and blue or green identify more and less nucleophilic regions for H+. Supplementary Table 6 discusses the proton distributions.