Asymmetric Tetraprotonation of gamma-[(SiO4)W10O32]8-. Triggers a Catalytic Epoxidation Reaction: Perspectives in the Assignment of the Active Catalyst

We present herein a combined kinetic, spectroscopic, and computational study to address the electronic and structural factors that dictate the protonation sites and equilibria of the divacant polyoxotungstate catalyst, as well as their impact on the catalysis.